a. RrTt rrTt RRtt. Mendel's theory is based on the hybrid cross trait. Take the example of a dihybrid cross, which occurs when two doubly heterozygous individuals are bred together.
Using this Punnett square as a guide, next:
Dihybrid cross: where A stands for the dominant white seed characteristic, B stands for the recessive wrinkled seed trait, and a stands for the recessive yellow seed trait. B stands for the dominant smooth seed trait.
These are the dihybrid cross-ratios:
Dihybrid cross's genotypic ratio is 1: 2: 1: 2: 4: 2: 1: 2: 1.
9:3:3:1 would be the phenotypic ratio.
One can color the Punnett squares with comparable allele combinations to calculate the genotypic ratios, and then count the number of Punnett squares with the same color to determine the genetic ratios.
Take a look at the illustration below for a visual illustration: a dihybrid hybridization of pea plants that takes into account two features
Y, for green seeds against y, for yellow seeds (the dominating seed color characteristic) (recessive seed color trait)
R, for wrinkled seeds against r, for round seeds (the dominating seed texture feature) (recessive seed texture trait).
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how does the protein encoded by the ras oncogene differ from the protein encoded by the normal ras gene?
The protein encoded by the ras oncogene is unable to hydrolyze GTP where the protein encoded by the normal ras gene can hydrolyze GTP.
An oncogene is a gene that has undergone mutation and may be carcinogenic. A proto-oncogene, which controls regular cell division, is an oncogene that has not yet undergone mutation. A gene that has the capacity to cause cancer is referred to as an oncogene. These genes are frequently altered or highly expressed in tumour cells.
Being involved in the regulation of almost all cellular processes, hydrolyze GTP is a biologically significant reaction. Therefore, one of the most crucial pharmacological targets is the enzyme that catalyses this process. hydrolyze GTP is a fundamental biological activity that controls practically all cellular functions.
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A codon is a set of three nucleotides that correspond to a specific amino acid. The table below shows various DNA codons and their corresponding amino acids.
Amino Acid DNA Codon(s)
Alanine GCT, GCC, GCA, GCG
Arginine AGA, AGG, CGT, CGC, CGA, CGG
Asparagine AAT, AAC
Aspartic Acid GAT, GAC
Cysteine TGT, TGC
Glutamic Acid GAA, GAG
Glutamine CAA, CAG
Glycine GGT, GGC, GGA, GGG
Histadine CAT, CAC
Isoleucine ATT, ATC, ATA
Leucine CTT, CTC, CTA, CTG, TTA, TTG
Lysine AAA, AAG
Methionine (Start) ATG
Phenylalanine TTT, TTC
Proline CCT, CCC, CCA, CCG
Serine TCT, TCC, TCA, TCG, AGT, AGC
Threonine ACT, ACC, ACA, ACG
Tryptophan TGG
Tyrosine TAT, TAC
Valine GTT, GTC, GTA, GTG
Stop TAA, TAG, TGA
Two strands of DNA are identical except for one codon. As a result, they code for slightly different proteins. Based on the information in the table above, which of the following statements could be true?
A.
One strand contains a CCC codon instead of CCA.
B.
One strand contains a ACG codon instead of ACA.
C.
One strand contains a CGC codon instead of CGG.
D.
One strand contains a CAC codon instead of CTC.
It is a technique for locating a particular DNA fragment inside a cell. The next step in CRISPR gene editing is typically to modify that piece of DNA after that.
What is RNA?Short RNA sequences called "CRISPR RNAs" or "crRNAs" are created from CRISPR "spacer" sequences that can direct the system to DNA sequences that match them. When the targeted DNA is located, Cas9, one of the CRISPR system's enzymes, latches to it and chops it, turning off the gene.
CRISPR/Cas9 edits genes by accurately slicing DNA, which is then repaired by the body's own mechanisms. The Cas9 enzyme and a guide RNA make up the system's two components. quickly converting cutting-edge technologies into transformational treatments.
Therefore, It is a technique for locating a particular DNA fragment inside a cell. The next step in CRISPR gene editing is typically to modify that piece of DNA after that.
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pcr is a chain reaction because the targeted dna is repeatedly replicated as long as the process continues. with every replication cycle, the amount of dna is .
PCR is the reaction because the targeted DNA is repeatedly replicated as long as the process continues is called as the DNA replication.
The practice for DNA replication initiation is tightly related to mobileular-cycle progression, making sure that replication takes place handiest as soon as in step with cycle. The time is ripe for a molecular dissection of the hyperlinks among the 2 processes.
During each mobileular division, a mobileular have to replica its chromosomal DNA via a method referred to as DNA replication. The duplicated DNA is then segregated into two "daughter" cells that inherit the identical genetic information.Polymerase chain reaction, or PCR, is a laboratory approach used to make a couple of copies of a section of DNA. PCR may be very particular and may be used to amplify, or copy, a particular DNA goal from a aggregate of DNA molecules.
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what are different pathways by which carbon could get from one tree into another tree? select all that apply.
A rabbit eats leaves from the tree, taking in carbon. The rabbit perform cellular respiration, releasing CO2 into the atmosphere.
What is Respiration?
The act of breathing and the passage of air into and out of the lungs are referred to as inspiration. The respiratory system eliminates carbon dioxide waste from the body, supplies oxygen to bodily tissues for cellular respiration, and aids in maintaining acid-base balance. Expiration is the process through which air leaves the lungs, and inspiration is the process by which air enters them.
Rate, rhythm, and quality of breathing are evaluated.
An individual's breathing is typically calm and silent. The usage of auxiliary muscles in the neck and chest, as well as intercostal space indrawing (also known as intercostal tugging), are assessed by medical professionals because they can be signs of respiratory distress.
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for any given species or larger taxonomic group, such as mammals, extinction is most likely caused by
destruction of habitat and the introduction of non-native species, including the spread of disease. The greatest threat facing the majority of endangered species in the United States today is habitat destruction.
The process through which a natural habitat loses the ability to support its native species is known as habitat destruction, also known as habitat loss and habitat reduction. Reduced biodiversity and species abundance result from the displacement or death of the organisms that once occupied the area. The loss of biodiversity is primarily caused by habitat destruction. Given that they pose significant risks to the survival of endangered species, fragmentation and habitat loss have emerged as two of the most crucial ecological research areas.
Humans contribute to habitat deterioration through practises including resource extraction, manufacturing, and urbanisation. The primary human cause is pressure from agriculture. Urban sprawl, mining, logging, and trawling are a few more. Currently, it is believed that habitat destruction is the main reason why species are vanishing from the planet.
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based on the following pedigree, with blood types provided (and ignoring the bombay phenotype - assume everyone is hh), what conclusions about paternity can be drawn?
The conclusions this can be the father of the daughter but not the son.
What phenotype is Bombay?
The "Bombay phenotype," named after the location where it was identified, characterizes people whose RBCs lack the H antigen. Because the A and B antigens cannot be produced in the absence of the H antigen precursor, their RBCs lack these antigens as well.
What is Bombay phenotype an example of?
The Bombay blood group is an uncommon blood group, with phenotypes missing H antigen on the red cell membrane but having anti-H in the serum. It does not have any A, B, or H antigens on its red cells or other organs. Bhende et al. were the first to discover a human H/h genetic polymorphism.
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Select all that apply
Secreted antibody molecules ______.
circulate freely in the lymph
circulate freely in the tissue fluids
are trapped in tissues
circulate freely in the blood
Answer: circulate freely in the lymph
circulate freely in the tissue fluids
circulate freely in the blood
Secreted antibody molecules:
Circulate freely in the lymph Circulate freely in the tissue fluids Circulate freely in the blood. About antibodyAntibody is a glycoprotein with a specific structure secreted from absorbent B-lymphocytes which have been activated to become plasma cells,as a response to certain antigen and reactive to that antigen.
The human immunity system is determined by the ability of the body to produce antibodies against antigens. Antibodies can be found in the blood or glands of the body of other vertebrates, and are used by the immune system to identify and neutralize foreign bodies such as bacteria and viruses. Antibody molecules circulate in the blood vessels and enter the body's tissues by going through a round of inflammation. They are made of little basic structures called chains. Each antibody has two heavy chains and two light chains.
There are several different types of antibody heavy chains, and several different types of antibodies, which are assigned to different classes (en:isotypes) based on each heavy chain. Five different isotypes of antibodies are known to exist in the mammalian body and play different roles and help direct the appropriate immune response for each different type of foreign body that enters the body,namely: IgG, IgM, IgA, IgD and IgE, which have a difference in area C.
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(a) Why are men never heterozygous for an X-linked trait? (b) Why
must men always inherit an X-linked trait from their mothers? (c)
Can a color-blind father pass this allele on to his sons? Explain. (d)
Can a normal male ever have a daughter that is color-blind? Explain
Answer:c
Explanation:edge 2022
in hemoglobin, multiple choice question. oxygen attaches to the fe atom in the heme, while carbon dioxide attaches to a cu atom in the protein portion. oxygen attaches to the fe atom in the heme, while carbon dioxide attaches to the protein portion. oxygen attaches to the protein in portion, while carbon dioxide attaches to the fe atom in the heme.
which of the following is/are involved pathophysiology of als? group of answer choices death of upper motor neurons death of lower motor neurons loss of dopamine neurons in the substantia nigra
ALS is characterized by the progressive degeneration of motor nerve cells in the brain (upper motor neurons) and spinal cord (lower motor neurons).
ALS (amyotrophic lateral sclerosis) causes loss of muscle control. ALS is often called Lou Gehrig's disease, after the baseball player who was diagnosed with it. ALS has no cure. Causes of ALS: Theoretical mechanisms of neurodegeneration 1 Oxidative stress Defective glutamate metabolism Mitochondrial dysfunction. This neuronal death causes loss of brain volume and disruption of sodium, calcium, and potassium ion channels, which in turn alters neuronal conductance. The disorder is named for its underlying pathophysiology, and "amyotrophy" refers to the atrophy of muscle fibers, which are denervated as the corresponding anterior horn cells degenerate.
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a species of barnacle is found to only exist on a particular type of substrate, a particular salinity content in the water, cannot survive in a tidal zone where it is exposed to air for long periods of time, and require a multitude of microorganisms to feed upon. these requirements describe its:
The requirements describe it as a habitat in a species of balance. Thus the correct answer is option (B) Habitat.
The ideal environment for an organism to survive is a habitat. That encapsulates all a creature requires in order to locate and obtain food, choose a mate, and have a successful reproduction.
A plant needs its habitat to have the ideal ratio of light, air, water, and soil. A habitat primarily consists of three things: a place to live, simple access to food and water, and space. When each of these elements is present in the proper ratio, a habitat is said to have an acceptable layout.
The complete question is:
A species of barnacle is found to only exist on a particular type of substrate, a particular salinity content in the water, cannot survive in a tidal zone where it is exposed to air for long periods of time, and require a multitude of microorganisms to feed upon. These requirements describe it:
(A). Ecological niche
(B). Habitat
(C). Ecosystem
(D). Living requirements
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name an area of the body that would have the greatest two-point threshold distance and an area that would equal the smallest distance determined. explain your reasoning for these two areas.
Receptive fields in various body regions have varying sizes, which can improve two-point discrimination resolution. The most sensitive parts of the body are the tongue, lips, and fingers since they have the highest resolution.
The least sensitive body parts are the back, calves, and forearms. The distance at which the two points may be felt to be apart is used to show two-point discrimination.
The shortest distance between two stimulation locations on the skin at which the two impulses are interpreted as two stimuli rather than as one stimulus is known as the "two-point threshold." Likewise known as spatial threshold.
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why were ovariectomized rats used in this experiment? how does the fact that the rats are ovariectomized explain their baseline t scores?
The Ovariectomized rats had been used on this test to make sure manipulate over the hormones withinside the rats.
The metabolic costs differed among the ordinary rat and the surgically altered rats due to the fact the surgically altered rats couldn't produce unique hormones (t4 and TSH) when you consider that they now no longer have both a thyroid or pituitary gland.
Without the ovaries, the rats had been now no longer capable of produce estrogen, and consequently had low baseline T ratings already, when you consider that estrogen stimulates bone increase and protects in opposition to osteoprosis.
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Activity 4. In a monohybrid cross of corn plants, purple seeds (p) are dominant to yellow (y). Both parents in the original cross are homozygous. What are the possible gametes for the purple parent?.
In a monohybrid cross of corn plants, purple seeds (p) are dominant to yellow (y). Both parents in the original cross are homozygous. The possible gametes for the purple parent are p.
An organism's genotype generally refers to the genetic makeup of the organism. Each gene is represented by two alleles, also known as alternative forms of the gene.
When the same alleles represent a gene, such genes are called homozygotes, whereas when the alleles differ, such genes are called heterozygotes.
In this case, the purple seed allele is denoted by p and the purple parent is said to be homozygous. Therefore, the genotype is definitely pp.
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Select the best choice to match the description. Answers may be used more than once or not at all.
This Starling force is roughly double the pressure in regular systemic capillaries because the amount of blood flow to the kidneys is 2X greater.
Glomerular hydrostatic pressure is the Starling force that is roughly double the pressure in regular systemic capillaries because the amount of blood flow to the kidneys is 2X greater.
By driving blood plasma water and solutes through the glomerular filter, glomerular blood hydrostatic pressure (GBHP) encourages filtration. About 55 mm Hg is the glomerular capillary blood pressure (GBHP). 2. Capsular hydrostatic pressure is the name for the resistance to filtration's backpressure (CHP).
The renal artery pressure and the afferent and efferent arteriolar resistance both affect the glomerular capillary hydrostatic pressure (3). GFR and glomerular capillary hydrostatic pressure both rise in response to an increase in afferent arteriolar diameter (a decrease in resistance).
The term "Starling force" refers to the fluid movement caused by filtration across a capillary wall that depends on both the hydrostatic pressure gradient and the oncotic pressure gradient.
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If a plant that is homozygous dominant for a gene is crossed with a plant that is homozygous recessive for the same gene, what is the probability that the offspring will have the same genotype as one of the parents? Same phenotype?
If a plant that is homozygous dominant for a gene is crossed with a plant that is homozygous recessive for the same gene, the probability that the offspring will have the same genotype as one of the parents is 0. The probability that the offspring will have the same phenotype as one of the parents is 0.25.
In genetics, a gene is a unit of heredity that is passed down from parent to offspring. Genes are made up of DNA, and they encode the instructions for making proteins that determine an organism's traits. A gene can have different versions, called alleles, that can result in different traits.
When an organism is homozygous for a gene, it means that it has two copies of the same allele for that gene.
For example, if a plant is homozygous dominant for a gene, it means that it has two copies of the dominant allele for that gene. Similarly, if a plant is homozygous recessive for a gene, it means that it has two copies of the recessive allele for that gene.
When two plants that are homozygous for different alleles of the same gene are crossed, the offspring will inherit one allele from each parent. In this case, all of the offspring will be heterozygous for the gene, meaning that they will have one copy of the dominant allele and one copy of the recessive allele.
Since none of the offspring will have the same genotype as either parent, the probability that the offspring will have the same genotype as one of the parents is 0.
The phenotype of an organism is the physical expression of its genotype, or the combination of alleles that it carries for a given gene. In this case, the plants that are homozygous dominant for the gene will have the dominant trait, while the plants that are homozygous recessive for the gene will have the recessive trait.
Since the offspring of the cross will be heterozygous for the gene, they will have the dominant trait. Therefore, the probability that the offspring will have the same phenotype as one of the parents is 0.25, or 1 in 4.
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Wildlife biologists use methods which __________ in order to control the brown tree snake population on Guam.
A) capture and kill the snakes, increasing death rates
B) anesthetize the snakes with acetaminophen in rats
C) use specially trained dogs to prevent spread to other islands
D) release sterilized males to compete with wild fertile males
E) All of the answer choices are correct.
Wildlife biologists are using a method which anesthetize the snakes with acetaminophen in rats in order to control the brown tree snake population on Guam. (B)
Food chainIn an ecosystem, there are interactions between living things which then produce energy flows and material cycles. Every living thing also needs nutrition (food) and energy that varies depending on the place and conditions. Living things also need air, soil, and sun to then be able to support their lives.
For example, humans need animals, and plants and vice versa. Interactions between living things can also be divided into coexisting or crossing life, although of course living things can also prey on each other.
The relationship between what eats and is eaten is what is called the understanding of the food chain.
Trophic level
Producers: Producers are organisms capable of producing their own food, including autotrophic organisms or green plants. Producers also occupy the first trophic level.Consumer I: In consumer I Organisms that occupy the second trophic level are also known as primary consumers. Among these primary consumers are herbivorous animals.Consumers II: Organisms that occupy the second trophic level are also known as secondary consumers, and are occupied by meat-eating animals (carnivores) and so on.Top consumers: The organisms occupying the highest trophic level are the top consumers.Decomposers: Decomposers which then form the final link in a food chain will break down plants and animals which then die and return various essential nutrients to the soil.Learn more about the Food Chain at: https://brainly.com/question/16504883
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If whales evolved from land-dwelling mammals, one would expect the fossil record to include intermediate forms, creatures more whale-like than land-dwelling mammals yet still possessing hind limbs and a pelvis lacking in modern whales. Such intermediates are termed __________.
In the evolution of whales, transitional forms include Pakicetus and Ambulocetus.
What is the proof that whales diverged from land mammals?There are several indications that whales originated on land when examining their bodies and biology. Their paddle-shaped flippers, which enclose hand bones with five "fingers," have the shape of paddles, and they breathe air and nurse their young with their own milk.
Why does the whale fossil record serve as a useful illustration of how evolution works?Whales travel through various transitional forms, such as the Pakicetus, Rhodecetus, Dorudon, and Balena, which allow researchers come up with a thorough development of whales through those fossils. Whale fossil records provide an excellent example for the evolution of its species.
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4. which 2 indicator tests are used for the presence of carbohydrates? what is the difference between the carbohydrates in each of these positive tests? in milk
Benedict's test and Tollen's test are used for the presence of carbohydrates.
When an aldehyde is present, the Fehlings and Benedict, which are a blue Cu(II) solution, precipitate a red color (reducing sugars like aldose). Heat is necessary for Fehlings to finish the reaction.
Using silver is Tollens (diamminesilver ion). It is a transparent solution that changes to silver like a mirror in the test tube when an aldehyde is present.
In all of the reactions, an aldehyde is oxidized while Cu(II) and Ag(Tollen's and Benedict's) are reduced.
What ion is utilized, whether it requires external energy to react, and the shelf life make a significant difference in both cases. Benedict's, in my opinion, lasts longer. All of them respond to lowering sugars.
What is carbohydrate?
Carbohydrates can be found in a wide range of both healthy and unhealthy meals, including bread, beans, milk, popcorn, potatoes, cookies, spaghetti, soft drinks, corn, and cherry pie. They are also capable of changing forms. The most common and abundant types are sugars, fibers, and starches.
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if the diameter of the afferent arterioles leading to the glomerulus increases (vasodilation) which of the following is not likely to occur? group of answer choices systemic blood pressure will go up. glomerular filtration rate will increase. urine output will increase. net filtration pressure will increase.
c) Systemic blood pressure will go up is not likely to occur if the diameter of the afferent arterioles leading to the glomerulus increases.
The kidney, which is an excretory organ, filters blood. Nephrons, a large number of tiny units that make up the kidney and are in charge of blood filtration.
Glomerular filtration takes place in the renal corpuscle of the kidney, which is a component of the nephron. Hydrostatic and colloid osmotic pressure drives this process.
The diameter of afferent arterioles affects the pressures collectively known as net filtration pressure.
Net filtration pressure will rise if the arterioles dilate, and it will fall if the arterioles constrict. Hormonal, renal, and neurological modulation all affect this process.
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Determine whether the following statement is true or false and why:Homologous recombination occurs only between DNA molecules that are identical in nucleotide sequence without any variation.
- false, because only similar sequence is needed
Homologous recombination occurs only between DNA molecules that are identical in nucleotide sequence without any variation is false because (C) false, because only a similar sequence is needed.
The genetic material exchange among non-sister chromatids of homologous chromosomes is referred to as homologous recombination. It indicates that the same gene locus on the two chromosomes exchanges genetic material. The chromosomes that share the same gene locus may have the same or a separate allele for that gene at that location. It indicates that for similar recombination to happen, a comparable sequence is necessary. If A A and a are alleles of the same gene, it will happen between A-A or A-a.
It's not always necessary to follow an identical order. As a result, the statement is not correct.
The complete question is attached.
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For members of what the diffusion of innovation theory calls the early majority, the recommended strategy for promoting a new technology is to _____.
For members of what the diffusion of innovation theory calls the early majority, the recommended strategy for promoting a new technology is to provide them with evidence of the system's effectiveness and success stories.
The Diffusion of Innovation Principle outlines the structure and pace at which new ideas, actions, or products spread throughout a community. Innovation, Adopters, Early Majority, Late Majority, and Late Comers are the protagonists of this theory. The diffusion of innovation theory aims to explain how, why and how quickly new ideas and technologies spread. When promoting an invention to a specific demographic, it is important to identify the characteristics of that group that promote or hinder adoption of the technology.
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The lipoproteins that carry absorbed lipids from the intestinal tract to the bloodstream are
chylomicrons.
The correct option is D :Chylomicrons are very large lipoproteins that transport lipids from the intestinal tract and are released into the circulating venous blood at the jugular and subclavian veins.
They are predominantly composed of triglycerides and phospholipids (9%), cholesterol (3%), and apoprotein (1%). When blood passes through the capillaries of different tissues, including adipose tissue, skeletal muscle, and the heart, the majority of chylomicrons are eliminated. As a result, the lipoproteins known as chylomicrons are responsible for transporting absorbed fats from the digestive tract to the blood.
These particles, which are derived from VLDL and IDL particles, have even more cholesterol added to them. The majority of the cholesterol in the blood is carried by LDL. Each LDL particle contains one Apo B-100 molecule, which is the most common apolipoprotein.
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Full Question ;
The lipoproteins that carry absorbed lipids from the intestinal tract to the bloodstream are
A. HDLs
B. VLDLs
C. LDLs
D. Chylomicrons
imagine that you could treat chloroplats with an indiicator dye that turns red in acidic conditions, yellow in neutral ocnditions, and blue in basic conditions.
The amount of light between points 1 and 2 is adequate for photosynthesis to occur at a faster rate than cellular respiration. Acidic conditions typically imply that the solution has an excessive concentration of H+, which makes the solution acidic. By dividing the reaction into half-reactions, the balancing process begins.
This indicates that more CO2 is being consumed than is being produced, which makes the problem more straightforward.
The signal will become purple as a result, from yellow. After point 2, light levels are low enough that cellular respiration outpaces photosynthesis, which results in more CO2 being generated than being absorbed and raising the pH of the solution. The indication will become yellow as a result, from purple.
An indicator dye called bromothymol blue (BMB) changes color from blue to yellow when acid is present. The pH of the solution decreases when carbon dioxide is introduced because it produces carbonic acid. When the pH is greater than 7.6, green, between 6.7 and 7.6, and yellow, less than 6, BMB is blue.
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sort each process into the appropriate bin to indicate the stage of mitosis in which it occurs. if a process occurs in more than one stage, sort it to the stage when it first occurs. prophase prometaphase metaphase anaphase telophase
Sister chromatids of a duplicated chromosome are joined by cohesions. Assembling tubulins to form spindle microtubules
Prophase. Prophase, the first stage of mitosis, sees the recruitment of condensin and the start of the condensation process that lasts until metaphase. The chromosomes decrease and thicken during prophase. Chromatids split across the centromere and migrate to opposing poles during anaphase. Telophase: Following the reorganization of nuclear envelopes surrounding each cluster of chromosomes, two nuclei are created by cohesion. Prophase, Metaphase, Anaphase, & Telophase are the four fundamental stages of mitosis by cohesions. Cytokinesis, the process of splitting the contents of the cell to create two new cells, begins in either anaphase or telophase and occurs in this exact sequential manner.
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think of two examples where a limiting factor has been eliminated in everyday life. how has this processed improved life? g
Biologic factors including food, mates, and competition with other species for resources are some examples of limiting constraints.
Others, like space, temperature, height, and the quantity of sunshine a location receives, are abiotic. Lack of a certain resource is the most common way that limiting factors are articulated.
Low food supplies and a shortage of room are two restrictions. As a result of competition for resources like food and space, the population levels off and the growth rate stops expanding. The carrying capacity (K) is the largest population that may exist in a given area without causing habitat destruction.
Additional categories can be used to further divide limiting factors. Temperature, water availability, oxygen, salinity, light, food, and nutrients are examples of physical or abiotic factors; biological or biotic factors include
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Imagine a population evolving by genetic drift in which the frequency of the k allele is 0. 2. What is the probability that at some point in the future allele k will drift to a frequency of 1? your answer should be a one decimal place answer.
Given that genetic drift is a random and non-directional mechanism of evolution that dramatically changes the gene or allele frequency in every population, the likelihood that allele k will drift to a frequency of 1.0 in the future is 0.5.
How does genetic drift work?A mechanism of evolution known as genetic drift is when a population's allele frequencies shift over generations owing to chance (sampling error). In smaller populations, it is more efficient.
Genetic drift is a random and non-directional mechanism of evolution, hence its outcome cannot be predicted. It's possible that it modifies the frequency of other alleles while maintaining the allele k's fixed frequency of 1.0.
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A great variety of predictions and hypotheses can be tested using the methods of science. Even so, there are some questions that do not lend themselves to scientific testing. Sort the statements as predictions or hypotheses that are scientifically testable and those that cannot be tested scientifically.
1. Taking vitamin C supplements every day will decrease the likelihood of catching a cold.
2. Strawberries taste nicer and look better when the plants are watered every other day
3. A person's soul is seperate from his or her body and the soul will continue to exist even after the person dies.
4. Meditating daily reduces the recurrence of depression in those who have had depression before.
5. Using torture to interrogate prisoners is wrong even if the information gained through torture saves lives.
6. Planting fields with several types of rice results in less disease and higher yields.
Science provides a vast field to study and research purposes. There are variety of hypotheses which can and cannot be tested by methods of science.
SCIENTIFICALLY TESTABLE:
Rice fields planted with a variety of varieties produce more rice with fewer diseases and higher yields.
Taking vitamin C supplements daily will lower your risk of getting a cold.
Daily meditation helps people who have already experienced depression avoid relapsing into it.
IS NOT TESTED SCIENTIFICALLY:
Watering strawberry plants every other day improves the taste and appearance of the fruit.
Even if it saves the rest of the family from starvation, selling a child into slavery is wrong.
A person's soul is distinct from their physical body, and it will live on even after they pass away.
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at an auction for the first time, dulcinea bids on a one-hundred-year-old edison-brand phonograph, believing that it is worth more than the price asked. when the item proves to be less valuable, dulcinea is
When the item proves to be less valuable, dulcinea is liable on the bid.
A person who bids on behalf of another is personally liable for the bid. Unless the relationship is being disclosed by the person to the auctioneer. Auction is a process where goods are sold to the highest bidder. Bidder offers to pay a particular amount of money for something. Legally responsible for paying the cost of something means liable on something. Dulcinea bids on a phonograph, believing that it is worth more but it proves to be less valuable, so Dulcinea is now liable on the bid.
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explain the difference between simple and complex carbohydrates. what are some of the roles of each in the cell.
Complex carbohydrates have longer sugar molecule chains than basic carbs.
These sugar molecules are converted by the body into glucose, which it needs for energy. Complex carbs take longer to break down and give more energy in the body than simple carbohydrates because of their longer chains.
What is the difference between basic and complex carbohydrates?In the body, both simple and complex carbohydrates are converted to glucose (blood sugar) and utilised as energy.
Glucose is utilised in the body's cells and the brain. Any wasted glucose is stored as glycogen in the liver and muscles for later use.
Simple sugars and carbohydrates are another name for this.
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