Answers
Given the original and mutated DNA strands below, frameshift mutation is shown . Frameshift mutations are gene mutations that alter the base sequence of an entire genetic frame from the point of the mutation.
One or more nucleotides can be added or removed as part of this process. A DNA sequence that has been mutated contains one insertional and one substitution mutation that causes the reading frame of the base sequence to shift, or a frameshift mutation.
What is mutation?A change in the nucleic acid sequence of an organism's genome, virus, or extrachromosomal DNA is known as a mutation in biology. DNA or RNA are contained in viral genomes.
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Related Questions
Estimate the percentage of deaths from CHD related to high blood pressure.
Answers
47% of coronary heart diseases are related to high blood pressure. Approximately, 220,000 deaths are caused by CHD each year.
What is coronary heart disease?Plaque accumulation in the walls of the arteries supplying blood to the heart is what causes coronary artery disease (called coronary arteries). Deposits of cholesterol make form plaque. Over time, plaque formation causes the interior of the arteries to narrow.
Although there is no known cure for coronary heart disease, medication can help manage the symptoms and lower the risk of complications like heart attacks. Changes in lifestyle, such as regular exercise and quitting smoking, are among the possible treatments.
Thus, 47% of CHD are related to high blood pressure.
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Identifying Variables
1. What is the independent variable in part A of Barbara’s experiment?
2. List all the parts that were controlled in part A.
3. What is the independent variable in part B of this experiment?
4. List all the factors that were controlled in part B.
5. What can you conclude about how the mass of the pendulum and length of string affect the amount of time needed to complete 40 swings? Use the chart above.
Answers
1) The independent variable in part A is the mass of the pendulum
2) The parts that were controlled in part A are Length of string and the distance pulled
3) The independent variable in part B is the length of the string
4) The controlled factors are the mass of the pendulum and the distance pulled
5) The mass of the pendulum does not affect the completion times.
What is an experiment?We know that in an experiment, we have to vary the independent variable and this would in turn cause a change in the dependent variable. In the case that we have Barbara is trying to carry out an experiment that has to do with the simple pendulum.
In the first case, the mass of the pendulum was the variable that was varied while in the second case, the length of the pendulum is the variable that was varied.
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Scyphozoa Life Cycle i need help with the names please
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The majority of scyphozoan jellyfish, including the majority of the large jellyfish that are familiar to most people, have a two-part life cycle.
What is Life cycle of Scyphozoa?The free-swimming medusa, which humans refer to as a "jellyfish," can be either male or female.
It can lay eggs or sperm, which when combined, develop into a larval stage called a "planula" (plural: planulae). The planula swims through the water in search of a place where it can attach itself to a surface and establish.
In the weakly oxygenated (but not anoxic) waters at intermediate depths of marine lakes, Mastigias planulae settle on the surface (usually the edges or underside) of rocks, rotting logs, and decaying leaves that gather around the lake's side.
Therefore, The majority of scyphozoan jellyfish, including the majority of the large jellyfish that are familiar to most people, have a two-part life cycle.
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plss answer this is worth 50 points
Lab Report
Genetic Variation
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U3_ Lab_GeneticVariation_Alice_Jones.doc).
Introduction
1. What was the purpose of the experiment?
Type your answer here:
2. What is the difference between a dominant and recessive trait?
Type your answer here:
Experimental Methods
1. What tools did you use to collect your data?
Type your answer here:
2. Describe the procedure that you followed to conduct your experiment.
Type your answer here:
Data and Observations
1. Record your observations in the data tables.
Type your answer here:
Table 1. First Generation Cross Results
Cross (B + D, C + A, or B + A) Number of purple flowers Number of white flowers
Table 2. Second Generation Cross Results
Cross (purple + white, purple + purple, or white + white) Number of purple flowers Number of white flowers
Conclusions
1. What conclusions can you draw about how sexual reproduction results in offspring with genetic variation? Write an evidence-based claim.
Type your answer here:
2. Use the simulation to observe the first-generation offspring from the cross between flowers B and D. Is it possible for either flower B or D to be homozygous dominant for the purple trait? Use a Punnett square to explain.
Type your answer here:
3. Use the simulation to observe the first-generation offspring from the cross between flowers C and A. What is the most likely genotype of flower C? Use a Punnett square to justify your explanation.
Type your answer here:
Answers
Answer: *DO NOT COPY, TAKE AS EXAMPLE*
I am not finished with conclusion tho
Introduction:
The goals of the experiment were to investigate genetic diversity and understand how sexual reproduction results in offspring with different characteristics.
Experimental methods:
The lab instructions or protocols you were given should list the equipment that was used to collect data for the experiment. For more information, please refer to your lab manual or instructions.Describe the steps you took, the supplies you used, and any controls or variables you changed during your experiment. Be specific and give enough detail so that the experiment can be repeated by others.Data and observation:
In the data tables provided, note your observations. Record the amount of purple and white blooms from the first generation cross in Table 1. The amount of white flowers and purple blooms produced by the second generation cross should also be recorded in Table 2.
Conclusion:
Genetic diversity occurs in children due to the mixing and recombination of genetic material from the two parents during sexual reproduction.If both copies of the dominant allele are present in the genotype, either Flower B or Flower D can be homozygously dominant for the purple trait.Use a Punnett square to analyze the possible genotypes and progeny to find the genotype of Flower C, which has the highest probability of hybridizing with Flower A in the first generation. The genotype of Flower C that would most likely be supported by the Punnett square.
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A tobacco plant can b made to express a gene from fireflies, resulting in emission of light. Which of the following is the basis for this phenomenon?
A. Chloroplasts can be made to produce light if firefly proteins are injected into plant cells.
B. Fireflies and tobacco plants share a recent common ancestor.
C. Fireflies and tobacco plants are infected by the same kinds of bacteria.
D. Transcription and translation are fundamentally similar in both fireflies and tobacco plants.
E. Most enzymes in fireflies have the same amino acid sequence as the enzymes in tobacco plants
Answers
Chloroplasts can be made to deliver light in the event that firefly proteins are infused into plant cells. Fireflies and tobacco plants share a new normal predecessor.
A phenomenon in an examination is what is happening or potentially process seen in reality that should be clarified by utilizing the logical technique.
In sciences, the word 'phenomenon' makes reference to any cycle seen in reality whose causes and additional outcomes still need to be explained.
phenomenon are clarified through a progression of consecutive strides altogether, which is known as the logical technique, it depends on exploratory methodology to test a given clarification (speculation) of these peculiarities.
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A tobacco plant can be made to express a gene from fireflies, resulting in emission of light, the basis for this phenomenon (D).Transcription and translation are fundamentally similar in both fireflies and tobacco plants.
When the bacteria should be introduced to the tobacco plants, the tobacco should be free of bacteria at that time, and this cannot glow. In addition, the gene should be transferred to the tobacco plant because both bacteria and fireflies had the same genetic makeup.
The tobacco plant, which has recently received a new gene injection, is a transgenic organism. The tobacco plant's DNA has been altered by the injection of a fire fly gene.
Tobacco, Nicotiana tabacum, is a herbaceous annual or perennial plant in the Solanaceae family that is grown for its leaves.
The firefly luciferase gene, a DNA segment that creates an enzyme that acts as the catalyst in the chemical that causes light in fireflies, was initially discovered by the scientists in order to make the auto luminescent tobacco. Cells from the tobacco plant were then injected with firefly DNA.
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which of the following greenhouse gases in earth's atmosphere has not been altered significantly by humans
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The atmosphere of the earth contains the following greenhouse gases, carbon dioxide, which humans have not greatly changed.
What is earth's atmosphere?About 78% of the atmosphere on Earth is made up of nitrogen, 21% of it of oxygen, and 1% of other gases. The atmosphere's five distinct layers—the troposphere, stratosphere, mesosphere, thermosphere, and exosphere—each include these gases and are distinguished from one another by specific characteristics like pressure and temperature. The atmosphere of Earth is composed of layers. The layers of the atmosphere are the troposphere, stratosphere, mesosphere, thermosphere, and exosphere, moving upward from the surface. The ionosphere is a further layer that connects the mesosphere and exosphere. Outside of the exosphere is the universe.
Why is atmosphere important?It not only protects us from harmful UV solar radiation but also gives us the oxygen we require to survive. Without it, our planet could not maintain the pressure required for liquid water could exist on its surface. It also warms Earth and keeps its temperature within a range that makes it habitable
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if thymine makes up 21% of the dna nucleotides in the genome of a plant species, what are the percentages of the other nucleotides in the genome? express your answer as a numbers separated by comma. enter your answer in the following order: % of adenine, % of cytosine, % of guanine. activate to select the appropriate template from the following choices. operate up and down arrow for selection and press enter to choose the input value typeactivate to select the appropriates symbol from the following choices. operate up and down arrow for selection and press enter to choose the input value type activate to select the appropriates symbol from the following choices. operate up and down arrow for selection and press enter to choose the input value type nothing
Answers
In a DNA molecule, the genetic percentages information is stored in the sequence of nucleotides. There are four types of nitrogenous bases in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G).
In the genome of a plant species, the percentages of these four nucleotides can vary. If thymine makes up 21% of the DNA nucleotides in the genome, the percentages of the other nucleotides can be calculated by subtracting the percentage of thymine from 100%. Since the genome is made up of equal amount of A, T, C, and G nucleotides, so the percentage of each of the other nucleotides is 25%. Thus the percentage of adenine, cytosine and guanine are 25%, 25% and 25% respectively. It is important to note that the thymine percentages of the different nucleotides can vary among different organisms and even among different cell types within the same organism. Knowing the percentages of the nucleotides in a genome can provide valuable information about the biology and evolution of an organism.
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fossil evidence indicates that modern whales and other cetaceans (dolphins and porpoises) are closely related to even-toed ungulates (hippopotamuses, pigs, deer, and cows). which of the following predictions would you make if you wanted to test this idea using the amino acid sequence of hemoglobin?
Answers
Hemoglobin sequences of whales will be more similar. According to fossil evidence, even-toed ungulates are closely linked to modern whales, dolphins, and other cetaceans (including porpoises and dolphins) (hippopotamuses, pigs, deer, and cows).
What occurs if hemoglobin levels are low?If you have anemia, also known as low hemoglobin, you could feel weak and fatigued. There are several different types of anemia, each with its own cause. Short-term or long-term anemia can range from mild to severe. Anemia typically has several contributing factors. Because hemoglobin contains iron, it can absorb oxygen from the air we breathe and transport it throughout the body. Hemoglobin is the iron-containing, oxygen-transporting protein that is present in red blood cells. Red blood cells' hue is also a property of hemoglobin.
Which fruit is best for hemoglobin?Count on Fruits: Fruits including apricots, apples, grapes, bananas, pomegranates, and watermelons are crucial for increasing hemoglobin levels. Apples are among the fruits that are the highest in iron content, making them a tasty and ideal choice when it comes to raising hemoglobin levels.
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as the chromosomes of a parent cell are duplicated and distributed to the two daughter cells during cell division, the structure of the chromosomes changes. answer the three questions for each phase of the cell cycle by dragging the yes and no labels to the appropriate locations in the table. note: assume that by the end of the m phase, the parent cell has not yet divided to form two daughter cells.
Answers
As the chromosomes of a parent cell are duplicated and distributed to the two daughter cells during cell division, the structure of the chromosomes changes Sister chromatids form when DNA replicates in the S phase. The sister chromatids become individual chromosomes once they separate in early anaphase.
It is one of the two identical of a chromosome that has been replicated in preparation for cell division. A chromatid is defines as when chromosome replicates in a nucleus that have two identical forms strands joined at a centromere.
However the cell's DNA content does not return to its normal levels until after cytokinesis is complete and two daughter cells have formed and remains condensed until after the sister chromatids separate and the new daughter cells begin to form.
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1. Which is a true statement about a bilaterally symmetrical animal?
a. It has sense organs at its anterior end.
b. It has sense organs at its posterior end.
c. It has sessile characteristics.
d. It has no posterior.
Answers
Answer:
A true statement about a bilaterally symmetrical organism is that it has sense organs at its anterior end, so the correct option is A
Explanation:
Bilaterally symmetrical organisms refer to those that can be divided into mirror images along a midline called a sagittal plane. Bilateral symmetry is a characteristic feature of various kinds of organisms. We human beings are the best examples. Generally, these types of animals have sense organs at the front or anterior end. This helps them to find food easily.
They definitely have a posterior but the sense organs are not necessarily situated at that end.
Also, they do not have sessile characteristics. Sessile means fixed to one place. Free locomotion is generally associated with bilaterally symmetrical organisms.
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spectral bias and task-model alignment explain generalization in kernel regression and infinitely wide neural networks
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The concepts of spectral bias and task-model alignment explain generalization in kernel regression and infinitely wide neural networks.
Spectral bias is a bias that occurs in kernel regression methods when the kernel used is unsuitable for the data and task at hand.
The kernel used in kernel regression methods determines the feature space into which the data is transformed, and if the kernel is not well-suited to the data, overfitting and poor generalization performance can result.
In contrast, task-model alignment refers to how well the model architecture aligns with the task it is designed to perform.
Having an architecture that is well aligned with the task can lead to better generalization performance in infinitely wide neural networks because it ensures that the model is expressive enough to represent the underlying patterns in the data.
In summary, spectral bias and task-model alignment are important considerations in kernel regression and infinitely wide neural networks because they can have a significant impact on generalization performance.
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Participant observation is an essential anthropological research strategy. Identify whether or not these are examples of participant observation.
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Participant observation is an essential anthropological research strategy. Identify whether or not these are examples of participant observation. An anthropologist living with the Bemba people of Zambia.
The first anthropologist to document a detailed method was Polish-born British anthropologist Bronislaw Malinowski participant observation. An anthropologist working in and studying corporate offices not Participant Observation, an anthropologist working in an NGO and an anthropologist studying the human effect on the environment.
For understanding subject's interpretations of that world. Participant observation defined to the method in which natural social processes are studied as they happen in their natural setting and are left relatively undisturbed.
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It's complete question is:
Participant observation is an essential anthropological research strategy. Identify whether or not these are examples of participant observation.
Participant Observation
an anthropologist living with the Bemba people of Zambia.
an anthropologist working in and studying corporate offices.
Not Participant Observation
an anthropologist working in an NGO.
an anthropologist studying the human effect on the environment.
Which of the following symbiotic relationships is incorrectly labelled?
A) Mutualistic: Clown fish and sea anemone
B) Commensalism: Bees and flowers
C) Parasitism: Mosquito and human
D) Parasitism: Fleas and dogs
Answers
C) Parasitism: Mosquito and human symbiotic relationships is incorrectly labelled.
Which of the following symbiotic relationships is incorrectly labelled?The relationship labeled as incorrect is B) Commensalism: Bees and flowers.The relationship between bees and flowers is actually mutualistic, as the bees pollinate the flowers, providing necessary nutrients for the flowers to grow and reproduce, while the flowers provide the bees with nectar and pollen.In contrast, commensalism is a relationship in which one organism benefits while the other is generally unaffected.For example, the relationship between fleas and dogs is commensalism because the fleas benefit by having a warm place to stay and a free meal, while the dog is generally unaffected by the presence of the fleas.Parasitism, on the other hand, is a relationship in which one organism benefits at the expense of the other.An example of this is the relationship between mosquitoes and humans, where the mosquito benefits by getting a meal of blood from the human, while the human is harmed due to the presence of the mosquito.To learn more about Parasitism refer to:
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……….allow scientists to gather information about complicated and interrelated environmental systems.
1. Figures
2. Charts
3.Paradigm shifts
4. Models
5.Graphs
Answers
Answer:
Charts
Explanation:
Do objects move from high to low concentration in active transport similar to passive transport? Explain what you learned.
Answers
Objects can move from high to low concentration in both active and passive transport, but the mechanisms by which they do so are different.
Why is the mechanism different?In passive transport, objects move from high to low concentration due to the natural movement of particles down their concentration gradient, without the use of energy. This can occur through diffusion or osmosis.
In contrast, active transport requires energy in the form of ATP to move objects against their concentration gradient, from low to high concentration. This is accomplished by using special protein pumps that move specific molecules or ions across the cell membrane.
In all, both active and passive transport can result in movement of objects from high to low concentration, but the methods by which they do so are different. Passive transport is a natural movement and does not require energy, while active transport uses energy in the form of ATP to move objects against their concentration gradient.
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In passive transport, molecules move in favor of their electrochemical gradient. In active transport, molecules move against their electrochemical gradient. No, objects do not move from high to low concentration in active transport similar to passive transport.
What are active and passive transports?Active and passive transports are cell mechanisms for taking substances into and out of the cell.
The main difference between them is the use of energy and substances' motion direction.
Passive transport moves substances from the more concentrated side to the less concentrated one. This is, substances move following their electrochemical gradient. Because of this, this transport does not require energy to occur.
There are two types of passive transports,
Simple diffusionFacilitated diffusion
Active transport acts against the electrochemical gradient, so it does need energy to transport substances. It carries molecules from a low-concentration side of the membrane to a high-concentration side. Energy is obtained in two ways,
In primary active transport, the energy needed comes from the ATP molecule. In secondary active transport, the energy comes from the membrane's electric potential.According to this framework, the answer is No, objects do not move from high to low concentration in active transport similar to passive transport.
In passive transport molecules move from high to low concentration sides ⇒ following the electrochemical gradient.In active transport molecules move from low to high concentration sides ⇒ against the electrochemical gradient.You can learn more about the difference between active and passive transport at
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based on the universal genetic code, which of the following represents the correct polypeptide that will result from translation of the mrna molecule shown, beginning with the first available start codon?
Answers
During the recap, the enzyme RNA polymerase( green) uses DNA as a template to produce an mRNA paraphrase( pink).
The pre-mRNA is reused to form a mature mRNA patch that can be restated to decode the protein patch( polypeptide) by the original gene. A gene sequence is converted into a polypeptide sequence via two processes Recap – making an mRNA paraphrase grounded on a DNA template( occurs within the nexus). Restatement – using the instructions of the mRNA paraphrase to link amino acids together( occurs at the ribosome).
The three-letter nature of codons means that the four nucleotides set up in mRNA — A, U, G, and C — can produce an aggregate of 64 different combinations. Of these 64 codons, 61 represent amino acids, and the remaining three represent stop signals, which spark the end of protein conflation.
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The correct polypeptide which results from the given mRNA molecule will be Met-Asp-Arg-Met-Val-Thr-Lys-Phe-Gly-His.
Amino acids can be basically defined as the building blocks of proteins. They are represented by codons which are also known as the triplet codes which is basically a three letter genetic code which determine the amino acid in the protein sequence.
All the amino acids have unique triplet codes. The given mRNA strand has the sequence AUGGAUCGAAUGGUAACAAAGUUCGGCCAC. It has ten amino acids in its sequence.
AUG codes for Methionine (Met), GAU codes for Aspartic acid (Asp), CGA codes for Arginine (Arg), GUA codes for Valine (Val), ACA codes for Threonine (Thr), AAG codes for Lysine (Lys), UUC codes for Phenylalanine (Phe), GGC codes for Glycine (Gly) and CAC codes for Histidine (His). Therefore, the correct sequence will be Met-Asp-Arg-Met-Val-Thr-Lys-Phe-Gly-His.
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Peptide bond is a type of covalent bond that could be carried out by which of the following enzymes? Diaacylglycerol acyltransferase Glycogen synthase Peptidyltransferase DNA or RNA polymerase TH
Answers
Option D, Peptidyltransferase The Peptide bond is a type of covalent bond that is formed between the carboxyl group of one amino acid and the amino group of another amino acid, through a dehydration reaction.
This type of bond is formed by the enzyme Peptidyltransferase. Peptidyltransferase is an enzyme that catalyzes the formation of peptide bonds between amino acids. This enzyme is present in the ribosomes and it uses a molecule called transfer-RNA (tRNA) to add each amino acid to the growing Peptide bond. Peptidyltransferase is a key enzyme in the process of protein synthesis, which is the process by which cells create proteins from amino acids. Other enzymes like Diaacylglycerol acyltransferase, Glycogen synthase, DNA or RNA polymerase are not involved in the formation of peptide bond. These enzymes are involved in other biological processes such as lipid metabolism, glycogen metabolism, and nucleic acid metabolism.
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g 5. following up on the above question: which of the following statements best describes how the mutations listed below would affect this protein? ala in position 220 is mutated to asp met in position 221 to glu leu in position 222 to lys trp in position 223 to pro phe in position 224 to arg ile in position 225 to ala ser in position 226 to thr (all these mutations are present in the mutant protein at the same time!)
Answers
The mutations listed in the question would likely have a significant effect on the function of the protein. The Ala in position 220 is mutated to Asp, which is a negatively charged amino acid.
The Met in position 221 is mutated to Glu, which is a polar amino acid, this change can affect the hydrophobic interactions and the 3D structure of the protein. The Leu in position 222 is mutated to Lys, which is a positively charged amino acid, this change could disrupt the electrostatic interactions and the hydrogen bonds that are present in the native protein. The Trp in position 223 is mutated to Pro. The Ile in position 225 is mutated to Ala, which is a non-polar amino acid, this change can affect the hydrophobic interactions and the 3D structure of the protein. The Ser in position 226 is mutated to Thr, which is a polar amino acid, this change can affect the hydrophobic interactions and the 3D structure of the protein. All these mutations could affect the stability, activity, and the function of the protein.
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germination is prematurely halted so doesn't break down completely and is presn the mashing step, enzymes convert into a disaccharide called .
Answers
Germination is prematurely halted so starch doesn't break down completely and is presn the mashing step, enzymes convert into a disaccharide.
Germination is the emergence of a seed, spore, or other reproductive body following a period of hibernation. Water absorption, the passage of time, cooling, warming, oxygen availability, and light exposure may all play a role in commencing the process.
Seed Germination: It initiates the growth process by activating enzymes. The seed initiates its internal physiology and begins to respire, make proteins, and digest the stored food.
To germinate, all seeds require water, oxygen, and the correct temperature. Some seeds also require adequate lighting. Some germinate better in direct sunlight, while others prefer darkness to germinate.
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Can you match these key science terms with their definitions?Drag the terms on the left to the appropriate blanks on the right to complete the sentences.1. The type of test that changes only one variable at a time in order to isolate the results is known as a controlled experiment.2. The one variable that is manipulated by a scientist as a potential cause in an experiment is the independent variable.3. The dependent variable is the factor a scientist observes to see the effect of the change made.4. A control group establishes a base line for an experiment.5. A negative control is a group in which no response is expected.6. A positive control is a group in which a known response is expected.7. In a single-blind experiment, the researchers--but not the participants--know who receives the treatment and who does not, to eliminate subjective bias.8. In a double-blind experiment, neither the participants nor the researchers know who receives the treatment and who does not.
Answers
The key science terms with their definitions are
1. The type of test that changes only one variable at a time in order to isolate the results is known as a controlled experiment.
2. The one variable that is manipulated by a scientist as a potential cause in an experiment is the independent variable.
3. The dependent variable is the factor a scientist observes to see the effect of the change made.
4. A control group establishes a baseline for an experiment.
5. A negative control is a group in which no response is expected.
6. A positive control is a group in which a known response is expected.
7. In a single-blind experiment, the researchers--but not the participants--know who receives the treatment and who does not, to eliminate subjective bias.
8. In a double-blind experiment, neither the participants nor the researchers know who receives the treatment and who does not.
“Blinding” is а procedure in which one or more persons in the reseаrch triаl аre kept unаwаre of the treаtment аssignment(s). Single-blind usuаlly meаns thаt the reseаrch pаrticipаnt is not told of the treаtment аssignment. Double-blind usuаlly meаns thаt the reseаrch pаrticipаnt, investigаtor, study coordinаtor/nurse, and study sponsor, аnd in some cаses the dаtа аnаlyst аre kept unаwаre of the treаtment аssignment. The purpose of а “blinded” study design is to remove the unintentionаl biаs thаt cаn аffect the interpretаtion of the reseаrch informаtion thаt is collected if the treаtment аssignment is known.
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How will the location of sun on the H-R diagram change when the sun becomes a red giant?
Answers
The Sun will start evolving so quickly that it will stop being a main-sequence star around the year 7.1 billion AD.
What is Red giant?
It will start to move from its current location on the H-R diagram, which is close to the center, to the top right, where the red giants reside.
This is due to the Sun's helium core eventually reaching a critical point at which the pressure from ordinary gases will be unable to support the crushing weight being placed on it (not even gasses heated to tens of millions of degrees).
At the Sun's core, a tiny seed of electron-degenerate matter will sprout. Although there is disagreement over the specifics of this transition, theoretical simulations suggest that it will start when the Sun becomes inactive.
Therefore, The Sun will start evolving so quickly that it will stop being a main-sequence star around the year 7.1 billion AD.
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During initiation a sigma factor:
recognizes the promoter DNA sequence around -10 and -35 only.
recognizes the DNA sequence around -10 and -35 and unwinds the double-stranded DNA helix.
unwinds the double-stranded DNA helix only.
incorporates the first nucleotide at position +1 only.
recognizes the DNA sequence around -10 and -35, unwinds the double-stranded DNA helix, and incorporates the first nucleotide at position +1.
Answers
During initiation a sigma factor :b)recognizes the DNA sequence around -10 and -35 and unwinds the double-stranded DNA helix. So,correct option is b.
A sigma factor (σ variable or particularity factor) is a protein required for commencement of record in bacteria. It is a bacterial record commencement factor that empowers explicit restricting of RNA polymerase (RNAP) to quality advertisers. It is homologous to archaeal record factor B and to eukaryotic component TFIIB. The particular sigma factor used to start record of a given quality will shift, contingent upon the quality and on the natural signs expected to start record of that quality. Choice of advertisers by RNA polymerase is reliant upon the sigma factor that partners with it.They are additionally found in plant chloroplasts as a piece of the microscopic organisms like plastid-encoded polymerase (PEP).
The structure of DNA is alluded to as a double helix as it looks like a contorted flight of stairs. A particle of the DNA contains two strands twisted around one another like a contorted stepping stool where each strand involves a spine including rotating gatherings of phosphate and sugar gatherings.
Hence, correct option is b.
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(Complete question) is:
During initiation a sigma factor:
a)recognizes the promoter DNA sequence around -10 and -35 only.
b)recognizes the DNA sequence around -10 and -35 and unwinds the double-stranded DNA helix.
c)unwinds the double-stranded DNA helix only.
d)incorporates the first nucleotide at position +1 only.
e)recognizes the DNA sequence around -10 and -35, unwinds the double-stranded DNA helix, and incorporates the first nucleotide at position +1.
which of the following offspring genotypes could result from the fertilization of an egg that had undergone nondisjunction in meiosis ii with a normal haploid sperm? (because a nondisjunction event in meiosis ii could involve the chromosome containing gene a or the chromosome containing gene a, be sure to consider both possibilities in your final answer .) select all that apply. view available hint(s)for part b which of the following offspring genotypes could result from the fertilization of an egg that had undergone nondisjunction in meiosis ii with a normal haploid sperm? (because a nondisjunction event in meiosis ii could involve the chromosome containing gene a or the chromosome containing gene a, be sure to consider both possibilities in your final answer .)select all that apply. aaa aaa aaa aa aa a
Answers
Nondisjunction in meiosis II can result in the production of egg cells that have an abnormal number of chromosomes. If an egg cell that has undergone nondisjunction fertilizes with a normal haploid sperm.
The resulting offspring will have an abnormal number of chromosomes. If the egg cell has an extra copy of the chromosome containing gene A, the possible genotypes of the offspring would be AaAa, Aaa, and Aa, because the sperm cell will contribute one copy of the chromosome to the fertilized egg. If the egg cell is missing one copy of the chromosome containing gene A, the possible genotypes of the offspring would be aa and aA, because the sperm cell will contribute one copy of the chromosome to the fertilized egg. Therefore, based on the given options, the possible genotypes that could result from the fertilization of an egg that had undergone nondisjunction in meiosis II with a normal haploid sperm are AaAa, Aaa, Aa, aa, and aA.
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a researcher has found variation in courtship dancing behavior among closely related species. she has determined that simple courtship dances are the ancestral form of the trait, while complex courtship dances are derived. this research approach is an example of which of the following? a. The experimental method b. The comparative method c. The observational method d. The statistical method e. The proximate method
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The comparative method is the right answer. Relative system is about looking at an object of study in relation to another. The object of study is typically compared across space and/ or time.
Relative styles can be qualitative and quantitative. Frequently, there's a trade-off the further cases to compare, the lower similar variables available and vice versa. The relative system – involves comparing two or further analogous societies or groups which are analogous in some felicitations but varied in others and looking for correlations.
It sharpens our power of description and plays a central part in conception-conformation by bringing suggestive parallels and contrasts among cases into focus. Comparative method is routinely used in testing suppositions, and it can contribute to the inductive discovery of new suppositions and proposition- structures.
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This research approach is an example of the comparative method.
Looking at a study object in relation to another is what the relative system is all about. Typically, comparisons across place or time are made with the object of study.
A group of organisms that can reproduce with one another in nature and create healthy offspring is referred to as a biological species. Both qualitative and quantitative relative styles are possible. There is frequently a trade-off between the availability of related variables and the number of cases to compare, and vice versa. The relative system compares two or more analogous civilizations or groups that are similar in some felicitations but different in others, and it searches for correlations between them.
By drawing attention to suggested parallels and differences across situations, it strengthens our descriptive abilities and contributes significantly to conception-conformation. The comparative technique is frequently used to test hypotheses and can aid in the inductive development of new hypotheses and propositional structures.
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How do bacteria reproduce?
O Budding
Mitosis
O Regeneration
O Meiosis
Answers
Bacteria reproduce by the process of A. Budding, which is an asexual mode of reproduction.
What is budding cell division?Budding cell division is a type of asexual reproduction in which a new organism grows from a small protrusion, or “bud,” that develops on the parent organism. In single-celled organisms, such as bacteria and other microorganisms (e.g. yeast), budding cell division may represent the primary form of reproduction.
Therefore, with this data, we can see that budding is the primary form of reproduction in unicellular organisms such as bacteria which are prokaryotic microorganisms.
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Though the brain represents less than 2 percent of your body weight, it uses 25 percent of
the oxygen you breathe and 70 percent of your glucose supply.
The brain has five basic regions:
Cerebellum - Coordinates body movement.
Brain stem - Responsible for basic life functions such as blood pressure and breathing.
Thalamus - A Grand Central relay station for incoming data from all the senses except
smell.
Hypothalamus - A regulator of hunger, thirst, sleep, sexuality, and emotions.
Cerebrum - Our gray matter, home to thought, vision, language memory, emotions. It's
divided into hemispheres. If you're right-handed, odds are the right hemisphere is where
you make sense of music, images, space, emotions. Your left hemisphere is apt to focus
on math, language, speech. In left-handed people, tasks are usually reversed.
The brain works via the communication of nerve cells along complicated circuit patterns
that register on encephalograms as brain waves, including the relaxed "alpha waves" so
beloved by meditators.
What conclusion can you draw from the information provided about the brain?
A. The brain uses a higher percentage of oxygen than any other organ.
B. The cerebrum is the most essential region of the brain.
C. Eating disorders do not involve testing on any regions of the brain.
D. Call regions of the brain are essential for normal human function.
E. Any injury to the brainstem may result in sensory dysfunction.
Answers
Answer:
D. All regions of the brain are essential for normal human function.
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question: An unknown sample of metal had a mass of 120g and it displaced 40ml of water when it was placed into a graduated cylinder. what is the density of metal
HELP
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based on your hypothesis, you predict that the chemical isolated from the fungus will successfully kill cancer cells. to test this prediction, you design the following experiment. you isolate cancerous cells from the colon of a patient from north carolina and culture (grow) the cells in your lab. you divide the cultured cells into four separate culture dishes. you treat two of the dishes with the fungus chemical and the other two with a control solution that does not contain the chemical. over the next ten days, you collect data on the percentage of cells that remain alive in each culture dish. this graph displays the data you collected. determine which statements are supported by the data in the graph. drag each statement into the appropriate bin. resethelp statement(s) supported by the datadroppable statement(s) not supported by the datadroppable request answer part b complete previous part(s) part c complete previous part(s) provide feedback
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The analysis of the graph showing the percentage of cancer cells remaining after a given number of days yields;
Statement(s) supported by data
cells treated with chemicals have a lower survival rate than cells that are not treatedAfter 5 days of chemical treatment, less than 50% of the cancer cells are still alive.The data does not support the statement(s).
Cancer cells treated with chemicals have a higher survival rate than untreated cells.This substance will be used to treat all types of cancer.This chemical will be beneficial in the treatment of colon cancer but not necessarily other types of cancer.More than 90% of cancer cells are alive after 10 days of no chemical treatment.Learn more about " cancer cells " to visit here;
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Which of the following hormones are released in response to decreases in blood glucose concentration?
A.Insulin
B.Luteinizing hormone
C.Glucagon
D.Parathyroid hormone
E.Calcitonin
Answers
Glucagon hormones are released in response to decreases in blood glucose concentration. Option C.
Glucagon is a hormone produced by the pancreas that is released in response to decreases in blood glucose concentration.
Its primary role is to raise blood glucose levels by triggering the breakdown of glycogen stored in the liver into glucose molecules.
Glucagon also helps to regulate the release of glucose from the liver into the bloodstream, providing the body with energy when needed. In addition, glucagon can help to reduce hunger and increase satiety.
It helps to raise blood sugar levels by stimulating the liver to convert stored glycogen into glucose, which is then released into the bloodstream.
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creation of the - barrier, which is a semipermeable structure that protects the brain from potentially toxic chemicals circulating in the blood, is an important function of glia.
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Creation of the blood brain barrier, which is a semipermeable structure that protects the brain from potentially toxic chemicals circulating in the blood, is an important function of glia.
The brain is protected from poisonous substances in the blood by the blood-brain barrier (BBB), which is a specialized system of brain microvascular endothelial cells (BMVEC). It also provides nutrition to brain tissues and filters dangerous substances out of the brain and back into the bloodstream. BMVEC and other elements of the neurovascular unit, including as astrocytes, pericytes, neurons, and basement membrane, work closely together to ensure that the central nervous system (CNS) is functioning properly.
The BMVEC's luminal and abluminal membrane surfaces are functionally polarized. The BBB limits the transfer of therapeutic medicines into the CNS because of its constrained permeability. The pathogenesis of many CNS diseases is heavily influenced by BBB disruption or changes in transport networks. Such BBB disruption is frequently mediated by pro-inflammatory chemicals and specific disease-associated proteins. The regulation of the BBB structural and functional integrity emerges from shared intracellular pathways, despite the underlying reasons of BBB failure appearing to be different. The development of treatments to enhance BBB function in health and disease will be made possible by a better knowledge of tight junction control and factors affecting transport networks.
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