Answer:
Because evolution is not a simple process and it is hard to accurately determine how a species evolved or what the species evolved from.
This small structures break down materials in the cell.
Answer:
Lysosomes
Explanation:
an organelle in the cytoplasm of eukaryotic cells containing degradative enzymes enclosed in a membrane. In other words, they break down materials in the cell.
If a city is experiencing very high temperatures, what action would allow the city to become
cooler?
Select one:
O Painting buildings a darker color like black.
O Increasing the amount of paved roads and parking lots.
O Painting buildings a lighter color like white.
O Expanding the size of the city
Answer:
Painting buildings a lighter color like white
Explanation:
This is because white color reflects most of the sunlight and does not absorb it , and that's why it keeps the city cool.
HELP!!!! WILL GIVE BRAINLIEST!!
The use of biotechnology for problem-solving and the creation of useful products has been around a long time. New developments
have introduced modern biotechnological tools and processes that have advanced the field. Which statement reflects a use of
modern biotechnology?
Bacteria ferment milk to produce cheese.
O The use of yeast in bread-making causes bread to rise.
O Cows are selectively bred to produce more milk.
O DNA fingerprinting is used to identify and convict criminals.
Answer:
Biotechnology is the process of making useful products. This means something like drugs that are created through genetic engineering. the most suitable answer would be:
C. Cows are selectively bred to produce more milk.
If you have heard of gmo products, this would be something like that. Hope this helps!
Plants use energy from the sun to produce glucose. This glucose is then used for fuel for growth. Which of the following terms best applies to plants?
O A. Producers
OB. Herbivores
O C. Consumers
D. Omnivores
Answer:
A
Explanation:
Which expression is equivalent to 7.659
Answer:
99
Explanation:
A group of scientists were using CRISPR to treat a mouse with cystic fibrosis, a disease caused by a defective Cl- channel protein called CFTR. The most common cause of cystic fibrosis in humans is the absence of a phenylalanine, an amino acid, in the CFTR protein, which prevents CFTR from achieving the correct 3-D structure.If the scientists wished to repair this mutation, how would they alter the mutated CFTR gene before using CRISPR to insert the DNA into the mice
Answer:
they can insert the codon that encodes phenylalanine by CRISPR-Cas mediated homology-directed repair
Explanation:
The CRISPR (clustered regularly interspaced short palindromic repeats,)-Cas (CRISPR-associated protein) is a versatile technology for genome editing which has been developed by adapting a natural defense mechanism found in prokaryotic organisms. The CRISPR-Cas genome editing tool can be used to edit DNA sequences in eukaryotic genomes (for example, in human genomes) and thus restore gene function (in this case, the CFTR gene function). The system consists of a Cas protein that cleaves the DNA at specific genomic sites and a single guide RNA (sgRNA) that guides the Cas protein at specific genomic locations. CRISPR-Cas mediated homology-directed repair refers to the process where Cas cuts the DNA to triggers the homologous recombination (HR) DNA repair pathway, by which it is possible to insert new genetic sequences at specific genomic sites (in this case, the codon that encodes phenylalanine within the specific CFTR gene).
Petrus brings his 87-year old grandmother to the emergency department where you work. His grandmother has a fever, is dehydrated and confused, and complains of pain when urinating. Petrus reports that she has not been eating or drinking, but she has no signs or symptoms of gastrointestinal distress. You request blood samples and also a urine sample. You decide to keep Petrus' grandmother in the hospital so that she can be given intravenous fluids. You also want to wait for the lab test results before you decide whether she required additional treatment or if she can return home.
1. When Petrus' grandmother's test results are sent to you, you discover that while her blood work is normal, her urine has Gram-negative bacilli in it. Based on this, you know that the cells are:______.
a) stained blue and are cylindrical in shape.
b) stained purple and are cylindrical in shape.
c) stained pink and are spherical in shape.
d) stained pink and are cylindrical in shape.
e) stained green and are oval in shape.
2. Petrus asks you what the Gram-negative result means and you explain that the bacteria causing his grandmother's UTI:____.
a) have a thin cell wall and an outer membrane which makes the cells less sensitive to the antibiotic penicillin.
b) have a thick cell wall and an outer membrane which makes the cells less sensitive to the antibiotic penicillin.
c) have no cell wall but they have a thick outer membrane which makes the cells less sensitive to the antibiotic penicillin.
d) have a thin cell wall and an inner cell membrane which makes the cells less sensitive to penicillin.
e) have no cell wall which makes the cells more sensitive to the antibiotic penicillin.
Answer:
d) stained pink and are cylindrical in shape.
b) have a thick cell wall and an outer membrane which makes the cells less sensitive to the antibiotic penicillin.
Explanation:
Gram-negative bacteria are bacteria that do not retain the crystal violet stain. So they stain in pink and they have an outer cell membrane unlike gram positive bacteria.
9. How did life on Earth change from one period of geologic time to the next?
Answer:
Scientists use the geologic time scale to illustrate the order in which events on Earth have happened. ... They used relative dating to divide Earth's past in several chunks of time when similar organisms were on Earth. Later, scientists used absolute dating to determine the actual number of years ago that events happened.
Life on Earth greatly change from one period to the next of geologic time.
The life on Earth change from one period of geologic time to the next because major changes appear on the surface of earth. Great changes in the environmental conditions leads to the change in the distribution of organisms as well as extinction of various organisms on which other organisms depend.
Due to this extinction of different organisms imbalance occurs within the ecosystem so we can conclude that life on Earth greatly change from one period to the next of geologic time.
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What additional resources does a seedling need compared with a germinating seed? why is it needed?
A fine-textured seedbed and good seed-to-soil contact are necessary for optimal germination. Aeration in the soil media allows for good gas exchange between the germinating embryo and the s Answer:
Explanation:
PLEASE HELP ASAPP !!! A certain plant tissue, typically found in the stem and in the hard outer covering of seeds, contains very thick, rigid cells. Which of the following correctly identifies this tissue and its function?
O meristem tissue; gamete formation
O vascular tissue, production of sugar
O ground tissue, transportation of materials
dermal tissue, protection against damage
According to the given information, this tissue is ground tissue, transportation of materials
What tissue is found in the stem?The stem is composed of three tissue systems that include the epidermis, vascular, and ground tissues, all of which are made from simple cell types.
The xylem and phloem carry water and nutrients up and down the length of the stem and are arranged in distinct strands called vascular bundles.
Thus, option C ground tissue, transportation of materials is correct.
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A mutation is the change in a gene. Mutations happen when a mistake is made when a cell’s chromosomes are copied. How might mutations introduced to variation into a population?
Which respresents the common conditions of all three of the following: genetic drift, the founder principle, and the bottleneck effect?
a.
occurs in small populations when one genetic trait becomes more common in a population purely by chance
b.
occurs in small populations and results in a decrease in genetic diversity and/or an increase in the occurrence of specific genetic traits
c.
when a small group of organisms only reproduce with each other to create a larger population of organisms
d.
when the majority of a population is killed off and there are only a few remaining organisms left to rebuild the population
The sentence represents the common conditions of all three of the following is (b), occurs in small populations and results in a decrease in genetic diversity and/or an increase in the occurrence of specific genetic traits.
What is the founder principle?The founder principle is a principle where a new population is established with a small population that is different from its parent population because the founder of the new population is from a different place.
Thus, the correct option is b.
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Other books and air these are the last Two options PLEASE HELP MY DAUGHTER IS HAVING ISSUES WITH THESE
Answer:
SUNLIGHT
Explanation:
its sunlight because the sun can bleach and damage material for example when you go outside and are outside a lot the small hairs on yoy head turn blonde
Question 2(Multiple Choice Worth 2 points)
(06.01 MC)
Choose the chemical equation that is correctly balanced.
2Ca(s) + Cl2(g) → CaCl2(s)
2Mg(s) + O2(g) → 2MgO(s)
Li(s) + Cl2(g) → 2LiCl(s)
2C(s) + O2(g) → CO2(g)
37. Positive feedback differs from negative feedback in that A) positive feedback benefits the organism, whereas negative feedback is detrimental. B) the effector's response in positive feedback is in the same direction as the initiating stimulus rather than opposite to it. C) the effector's response increases some parameter (such as temperature), whereas in negative feedback it decreases. D) positive feedback systems have only effectors, whereas negative feedback systems have only receptors. E) positive feedback systems have control centers that are lacking in negative feedback systems.
Answer:
B) the effector's response in positive feedback is in the same direction as the initiating stimulus rather than opposite to it
Explanation:
Two major mechanisms are used by target cells to relay information about the quantity and effect of an hormone produced by an endocrine gland back to its source. These mechanisms are: positive and negative mechanism.
- Positive mechanism occurs in such a way that the effector's response favors that of the original stimulus while in Negative feedback, the effector's response counters or opposes the original or initiating stimulus.
For example, if the pancreas (endocrine gland) releases insulin hormone to the cells, the cells send a positive feedback to make the pancreas proceed with the production of insulin while a negative feedback will make pancreas reduce or stop the production of insulin.
what causes the formation of ocean currents?
A: rotation of Earths on its axis
B: change in the magnetic field of Earth
C: temperature differences of water in the ocean
D: movement of tectonic plates under Earth's surface
Answer:
a
Explanation:jhgyutfyrdtsardfghygygtfydrtdrtdtyytftydtrdrdrtdxfhdy8
Answer:
It may be C or D.
Sorry if I'm wrong.
Explanation:
Which part of the plant converts energy from the sun into food
Answer:
the leaves make the food of the plant
PLEASE HELP ASAP !!! Like many multicellular organisms, plants have organs that perform specific functions. Which of the following correctly pairs a plant organ with its function?
O Plant leaves capture nutrients from rain.
Plant roots absorb water needed for photosynthesis.
O Plant stems store carbon dioxide for cellular respiration
O Plant flowers provide the energy needed for eggs to develop.
Answer:
Its A, the roots of plants absorb the water used in the process of photosynthesis
Explanation:
Really hope this helps <3
The following correctly pairs a plant organ with its function - Plant roots absorb water needed for photosynthesis.
RootsThe root is the part of a vascular plant that is normally underground. The roots absorb water and mineral from the soil. It also helps in anchoring the plant in the ground.
The water is absorbed through roots used for the photosynthesis and cooling of the aerial parts of the plant.
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Why is the sequence of amino acids important to protein function?
A)
The sequence of amino acids doesn't have an effect.
B)
Amino acids can only be combined in a specific order, otherwise the bonds will fall apart.
C)
The order of amino acids determines the shape a protein will take.
D)
The order of the amino acids can be read like a code to assemble DNA.
The order of amino acids determines the shape a protein will take. The correct option is C.
What is amino acid?Organic compounds that contain both amino and carboxylic acid functional groups are known as amino acids.
Although hundreds of amino acids exist in nature, the alpha-amino acids that comprise proteins are by far the most common. The genetic code contains only 22 alpha amino acids.
Amino acids, also known as protein building blocks, are compounds that play a variety of important roles in your body.
They are required for vital processes such as the synthesis of proteins, hormones, and neurotransmitters. Protein-rich foods, such as meat, fish, and soybeans, are high in amino acids.
Each protein's unique 3-dimensional structure and function are determined by the sequence of amino acids.
The sequence of genes determines the combinations of three DNA building blocks which is nucleotides that basically code for amino acids.
Thus, the correct option is C as it is assemble in such a way to determine the shape of protein.
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Which organism is the most closely related to birds?
And why?
Answer:
chick
Explanation:
it has feathers and lays eggs
The aurora lights
primarily occur in the
Answer:
Occurrence. Most auroras occur in a band known as the "auroral zone", which is typically 3° to 6° wide in latitude and between 10° and 20° from the geomagnetic poles at all local times (or longitudes), most clearly seen at night against a dark sky.
Explanation:
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Which is not a reason why organisms are classified into Domains and Kingdoms?
Answer:
for a better study of organisms
Explanation:
Organisms are classified into domains and kingdoms based on their cell type, their ability to make food, and the number of cells in their bodies.
Domains and kingdoms are the highest categories of classification. It is usually used to classify organisms to make it simple for their identification. It is not classified only to study the organism better.
What are domain and kingdom?A domain is the highest category of classification and a kingdom is a second-highest category.
Living things are placed in these categories according to their way of obtaining food, the number of cells, types of nuclei, etc.
It is used to avoid confusion between the organism and to show that the organisms are related to each other.
Thus, it can be concluded that it is not used not only study but for other purpose also.
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Would it be possible for an organism to make protein if it did not eat protein?
Answer:
Even though you did not eat the grains and legumes together, your body can synthesize new protein over the course of the day. But if you ate your toast with peanut butter, it would be a complete protein, meaning all essential amino acids are delivered within one meal.
Explanation:
Which of the following statements is not true of the circulatory system and its transport of nutrients?
a. Water-soluble nutrients leave the small Intestine via lymph.
b. Nutrients that leave the small intestine via blood are delivered first to the liver.
c. Lymph empties into the blood just before the blood reaches the heart.
d. Lymph is formed from fluid that Is forced out of capillaries by blood pressure.
Answer: b. Nutrients that leave the small intestine via blood are delivered first to the liver.
Explanation:
Lymph is a clear fluid that leeks out from the interstitial spaces of the cells and this comprises of electrolytes, blood proteins, and antibodies. It is pushed towards the heart from the lymphatic vessels. The nutrients from the small intestine are drained into the bloodstream and they are circulated to all parts of the body and not directly destined towards the liver.
Which of the following correct describes the difference between dominant and recessive traits?
A Dominant traits are found more frequently in a population than recessive traits.
Recessive traits are found more frequently in a population than dominant traits.
© When present together, recessive traits are the ones which we see in the organism
When present together, dominant traits are the ones which we see in the organism.
Explanation:
The first one I think _______________
Calculation, contemplation, and cognition are human activities associated with increased activity in the
A) thalamus
B) hypothalamus
C) cerebrum
D) cerebellum
Answer:
C
Explanation:
found answer from "Bio-Chapter 49" quizlet-
https://quizlet.com/10652308/bio-chapter-49-flash-cards/
Calculation, contemplation, and cognition are the human activities associated with increased activity in the cerebrum. So, option C is correct.
What do you mean by Contemplation?Contemplation may be defined as studying or observing something carefully or thinking deeply about something.
The cerebrum is the largest part of the brain. It initiates and coordinates movements and regulates temperature. It also maintains and enables the thinking, reasoning, and problem-solving activities of humans.
Therefore, Calculation, contemplation, and cognition are the human activities associated with increased activity in the cerebrum.
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How might a plant population be affected by the construction of a road through a forest? In your answer, consider how things such as pollution from automobiles, runoff from roadways, or an increase in sunlight might affect the plant populations that live in the forest.
Answer:
Roads and traffic affect wildlife populations in three major ways, by (i) increasing mortality, (ii) decreasing habitat amount and quality and (iii) fragmenting populations into smaller sub‐populations which are more vulnerable to local extinction.
Explanation:
A plant population affected by the construction of a road through a forest by:-
Roads create improved access to forests, which can increase predation rates from hunters.Animals may move to avoid traffic noise, increasing their vulnerability to predation by other animals.Fragmentation can have a severe impact on wildlife. Reductions in habitat may lead to increased competition among species and more limited resources.Pollution that affect the plant populations that live in the forest include:-
Automobiles: - Pollutants from automobile deposit on leaves, blocking the stomata and eventually affecting transpiration.
These depositions hinder CO2 absorption and decrease photosynthesis .This affect the growth of plants and their productivity.Runoff from roadways:- It contain salts which when come in contact with the plant roots injure them.
it increase water stressit also affect water qualityIt affect the mineral nutrition.Increase in sunlight:- It can bleach out the color of plant's flower and foliage.
parts of the leaves may get dark in color and the edge may blown and curl.some sun sensitive plants may also wilt .To know more about habitat destruction here
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One weakness of the human microbiome project is its use of Sanger Sequencing instead of modern metagenomic techniques. it's underrepresentation of non-US born people. it's inclusion of multiple lifestyle attributes. its sampling of people with a wide variety of diets preventing analysis of risk groups. the lack of information sharing from the project's findings.
Answer:
The correct answer is - It's a sampling of people with a wide variety of diets preventing analysis of risk groups.
Explanation:
The correct answer among the given option would be that people with more diverse diet variety would be preventing the analyzing the risk groups. It is known that the human microbiome project believes that every individual experiences a specific and unique effect of the microbiome.
Even in the case of two distinct organisms have the same microbiota will experience different effect and show different characteristics to one another due to varieties and difference in their diet.
Plzzzz helpppppppppppppp
Answer:
A or C, try to narrow is down to what other information you have and go from there.
Explanation:
Answer:
C
Explanation:
The higher the temperature, the more water vapor a volume of air is capable of holding. Hope this helps! :)
I
Match each term with its description. Note that not all answers will be used.
1. Interphase
2. Prophase
3. Metaphase
4. Anaphase
5. Telophase
6. Cytokinesis
7. Haploid
8. Metaphase II
9. Anaphase II
10. Telophase II
a. Four daughter cells form, each with one copy of the original chromosomes.
b. The cell splits into two daughter cells.
c. Chromosomes align along the middle of the cell
d. Chromatids separate in a meiosis II cell
e. Nuclear membrane re-forms
f. The centromeres split and the chromatids are pulled apart
g. DNA replicates
h. Chromosomes align in the middle of the meiosis II cell
i. RNA leaves the nucleus
j. Crossing over occurs during this phase
k. Occurs when only one member of each homologous pair of chromosomes is present
l. DNA condenses into chromosomes
Answer:
1. Interphase - DNA replicates, RNA leaves the nucleus
2. Prophase - Crossing over occurs during this phase, DNA condenses into chromosomes
3. Metaphase - Chromosomes align along the middle of the cell
4. Anaphase - The centromeres split and the chromatids are pulled apart
5. Telophase - Nuclear membrane re-forms
6. Cytokinesis - The cell splits into two daughter cells.
7. Haploid - Occurs when only one member of each homologous pair of chromosomes is present
8. Metaphase II - Chromosomes align in the middle of the meiosis II cell
9. Anaphase II - Chromatids separate in a meiosis II cell
10. Telophase II - Four daughter cells form, each with one copy of the original chromosomes.
Explanation:
1. Interphase - DNA replicates, RNA leaves the nucleus
2. Prophase - Crossing over occurs during this phase, DNA condenses into chromosomes
3. Metaphase - Chromosomes align along the middle of the cell
4. Anaphase - The centromeres split and the chromatids are pulled apart
5. Telophase - Nuclear membrane re-forms
6. Cytokinesis - The cell splits into two daughter cells.
7. Haploid - Occurs when only one member of each homologous pair of chromosomes is present
8. Metaphase II - Chromosomes align in the middle of the meiosis II cell
9. Anaphase II - Chromatids separate in a meiosis II cell
10. Telophase II - Four daughter cells form, each with one copy of the original chromosomes.