The viral enzyme that converts single-stranded RNA into double-stranded DNA is called Reverse transcriptase.
Reverse transcriptase is an RNA-dependent DNA polymerase enzyme that catalyzes the conversion of single-stranded RNA into double-stranded DNA. It is used by retroviruses such as HIV to produce a DNA copy of their viral RNA genome, which is then integrated into the host's genome for replication.
The process of reverse transcription occurs in multiple steps. First, reverse transcriptase synthesizes a DNA copy of the viral RNA. This DNA copy, called cDNA, can then be integrated into the host's genome or remain as an independent DNA molecule. Reverse transcriptase is critical to the replication of retroviruses and has also been used in research for applications such as reverse transcription polymerase chain reaction (RT-PCR).
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ASAP!!!!!!! I NEED HELP
Why are there two sets of phases during meiosis, but only one during mitosis? Think about what is different about meiosis and mitosis
Answer:
Mitosis is the cell cycle for somatic cells which are diploid (2n).
Meiosis is the cell cycle for germ cells (gametes) where they are haploid (n) so that is why they have two sets of phases.
Explanation:
Science is the investigation of the ______________ ________________. Biology is the branch of science that studies ___________ _______________ and the environments they live in.
The science is the investigation of phenomenan and biology is a branch that studies ecosystem and living entities.
Science is the subject that deals with the reasons behind the phenomenon happening in the world like the interactions between the biotic and abiotic factors and abiotic phenomena like earthquake, tsunami, volcanoes , and also find the reasons behind the formation o mountains, continents, oceans, valleys, rivers and how the processes of gravitation, chemical changes take place and also it deal s with the reasons behind the reproduction, variations, evolution,, whereas the biology mainly focuses on the living entities and their interactions wirh the abiotic factors like temperature, water, though , light intensity, etc so it studies biosphere and ecosystem and study of it also called as ecology and all these are important because they will let us know that whatever is happening is due to a reason and how it can be used in research to develop a better world for living with desirable improvemnet s and also it helps in addressing the social issues related environmnt like global warming , glacier melting , pollution , inavsion , overexplouitation , climate changes , habitat loss etc.
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what would happen to you, metabolically, if all your mitochondria were destroyed? group of answer choices you would have much less atp available to think, move muscles, etc. you would have many fewer electrons available to think, move muscles, etc. you would have much less oxygen available to think, move muscles, etc. you would have much less glucose available to think, move muscles, etc.
Mitochondria are cellular organelles that are involved in cellular respiration, which generates adenosine triphosphate (ATP).
ATP is responsible for the body's energy production, which is required for different metabolic functions. A lack of mitochondria would result in a significant impact on the body's metabolic processes.If all your mitochondria were destroyed, you would have much less ATP available to think, move muscles, etc. Metabolically, ATP is essential for the body's metabolic activities. ATP is produced via oxidative phosphorylation, which occurs in the mitochondria. Hence, if the mitochondria are destroyed, the body cannot produce ATP via oxidative phosphorylation, leading to an insufficient ATP supply. As a result, the body's metabolic processes will significantly slow down or stop.
Additionally, you would have much less oxygen available to think, move muscles, etc. Mitochondria are responsible for oxygen utilization in cellular respiration. If the mitochondria are destroyed, oxygen is not effectively used. Hence, less oxygen would be available to think, move muscles, etc.
Furthermore, you would have much less glucose available to think, move muscles, etc. Mitochondria are involved in the process of breaking down glucose during cellular respiration to produce ATP. If mitochondria are destroyed, glucose breakdown would be significantly reduced, leading to lower levels of ATP production. This would result in a lack of glucose available for the body's metabolic activities.
Therefore, a lack of mitochondria would have a considerable impact on the body's metabolic processes, leading to a shortage of ATP, oxygen, and glucose supply.
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please solve fast 3 and 4
Answer:
3. Pathology
4. HCN
Explanation:
Pathology is the study of the nature and causes of diseases.
What questions you would like to ask your teacher to know about the role of vaccine in prevention of harmful diseases
Answer:
Some questions that can be asked:
1) How does the vaccine work and prevent diseases?
2) Can some people become allergic or have a negative response to vaccines, and How does this work?
3) What causes some vaccines to not work 100% effectively?
4) How do people create vaccines?
I'm not sure if this is what you were asking for, hopefully, this helps.
100 POINTS AND BRAINIEST FOR BEST CORRECT ANSWER
Identify what kinda of cell is pictured, and identify the parts
Answer:
That is a bacteria cell
A - pilus/pili
B - capsule
C - cell wall
D - plasma membrane
E - DNA in nucleoid
Explanation:
Answer:
33.That is a bacteria cell
34.
A - pilus
B - capsule
C- cell wall
D - plasma membrane
E - DNA in nucleoid
What are some reasons why biologists use computer models?
1. How does the endosymbiotic theory support the claim that life today could have
originated from a single cell?
Cytoine make up 38% of the nucleotide in a ample of DNA from an organim. Approximately what percentage of the nucleotide in thi ample will be Uracil?
In a sample of DNA, nucleotide thymine will make up 12% of the total.
DNA structure:According to Chargaff, nucleotide subunits make up the DNA. The double-stranded DNA molecule is created by these nucleotides forming hydrogen bonds with one another.
The following nucleotides can be found in the DNA molecule:
Guanine (G) pairs with Cytosine, while Adenine (A) pairs with Thymine (T) (C).
According to Chargaff's rule, the ratio of adenine to thymine in a DNA molecule is equal. Same holds true for the cytosine and guanine. The entire number of nucleotides, however, is 1, or 100%.
A + T + G + C = 100%.
If the DNA sample's cytosine content is 38%, then the DNA sample's guanine content must be 38% as well.
G (38) + C (38) = 76%
100% - 78% = 24%
Thus, the combined amount of adenine and thymine is 24%. Each nucleotide will make up 24% 2 = 12% of the total, thus that A = T = 12%.
The amount of thymine in a sample of DNA will therefore be 12%.
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it is the job of the _______ to keep teratogens from reaching the fetus.
It is the job of the placenta to keep teratogens from reaching the fetus
Teratogens are the environmental substance or drugs or any other substance that can cause congenital disorder in a fetus.They can be taken unintentionally or intentionally.No amount of alcohol and cigarattes are considered safe during pregnancy. Alcohol,cigarettes and drugs like marijuana will act as a teratogen and cause cognitive and even physical disorders in fetus.
Studies have shown that about 4-5% of fetus are exposed to teratogens in the gestation period and leads to miscarriages, stillbirths and disorders.A mother can also be unintentionally exposed to some medications that act as a teratogen. When a teratogen enters the body,kidney filters most of it and releases as urine.It is the job of the placenta to keep the rest of the teratogen from entering the fetus. But this also can't reduce the risk to a 100%.
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If you can continuously eat without feeling full, what hormone
might a human be in deficit of?
1. Glucose
2. Neuropeptide Y
3. Testosterone
4. Glucagon
5. PYY
6. Leptin
If a human can continuously eat without feeling full, they might be in deficit of the hormone leptin, option 6 is correct.
Leptin is primarily produced by fat cells and acts as a satiety hormone, signaling to the brain that the body has sufficient energy stores. It helps regulate appetite and energy balance by suppressing hunger and increasing energy expenditure. When leptin levels are low or the body becomes resistant to its effects, the brain doesn't receive the signal that the body is satiated, leading to excessive food intake and a lack of feeling full.
While the other hormones listed, such as glucose, neuropeptide Y, testosterone, glucagon, and PYY, may play a role in appetite regulation and energy balance, leptin is specifically associated with signaling fullness and satiety. Its deficiency or resistance can disrupt the normal feedback loop between the body and the brain, resulting in continuous eating without feeling satisfied, option 6 is correct.
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please help me consider how exemptions might affect public
Answer:so the exemptions might affect the public by publicity exemptionating publicality
Explanation:
8. Gene's doctor taps him on the knee and his leg kicks out
(straightens). What motion did his leg make?
Gene's doctor taps him on the knee and his leg kicks out. The motion of his leg makes deep tendon reflex (DTR).
Lower motor neuron lesions have varying effects on tendon reflexes, also referred to as myotatic reflexes. The efferent limb of a tendon reflex will not function if a muscle loses all motor neuron innervation. Lower motor neuron lesions are frequently accompanied by hypoactive or absent reflexes.
This is frequently caused by the simultaneous activation of muscle spindle sensory afferent fibers inside peripheral nerves or roots, though.
Muscle stretch reflexes, which are deep tendon reflexes, are carried out by neuromuscular spindles. They are the only objective aspect of the clinical assessment. The patient may intentionally change their responses to the motor and mental examinations, their performance on sensory tests, or even their stride, for a number of different reasons.
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who establishes a crime scene?
A) Criminal Investigator
B) First Responder
C) District Attorney
D) Crime scene Photographer
Answer:
Explanation:
Law enforcement establishes a crime scene of what happened.
The puppy walks at 2
m/s towards his
mother.
Speed , velocity , or acceleration ?
Answer:Velocity
Explanation:
Because it is going towards the mother and it says how much is going.
When did people first know about archaebacteria?
A. 1999
B. 1988
C. 1977
D. 1966
Answer:
1977 is when people first knew about archaebacteria
Answer:
it was actually discovered in 1922
they didnt know what it actually was until 1977.
C.1977
Explanation:
Amoebas are single-celled organisms that contain a nucleus. They are
O eukaryotic
O bacterial
O fungal
O prokaryotic
Answer:
eukaryotic
Explanation:
eukaryotic
( it deleted my answer)
What is likely to be observed in liver cells of a person injected with epinephrine?
A conformational change in the cells is likely to be observed in liver cells of a person when injected with epinephrine.
When epinephrine binds to the liver cell's surface receptor, a conformational shift can take place. This change in receptor's shape enables G protein to bind and get activated. Adenylate cyclase binds to the molecule as a result of a conformational shift brought about by the activation G protein.
Both a neurotransmitter and a hormone, adrenaline is most generally referred to as epinephrine. It is created and released as a hormone by your adrenal glands, which are hat-shaped glands located on top of each kidney. It functions as a chemical messenger known as a central nervous system neurotransmitter to help send nerve signals across nerve ends to another nerve cell, muscle cell, or gland cell.
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3. Place the following structures in order from SMALLEST to LARGEST.
tissue
nucleotide
nucleus
organ
DNA
cell
human body
organ system
Answer:
nucleotide, DNA, nucleus, cell, tissue, organ, organ system, human body
Explanation:
good luck in your work! :)
What is the role of a flagella in the animal cell?
Answer:
The primary function of a flagellum is that of motility. In some bacteria the flagellum can also function as a sensory organelle, being sensitive to wetness, chemicals, and temperatures outside the cell. Flagella are organelles defined by function rather than structure.
Explanation:
flagellum, plural flagella, hairlike structure that acts primarily as an organelle of locomotion in the cells of many living organisms. Flagella, characteristic of the protozoan group Mastigophora, also occur on the gametes of algae, fungi, mosses, slime molds, and animals.
I need help with this question thanks :)
Answer: A : earthquake
(iv) Plants, like all living organisms, need to excrete waste products. Explain how the excretory product of photosynthesis is removed from leaf.
Plants eliminate waste products generated during photosynthesis through a process called transpiration. The primary waste product of photosynthesis is oxygen, and it is removed from the leaf through small openings called stomata.
During photosynthesis, plants absorb carbon dioxide and release oxygen as a byproduct. Oxygen molecules diffuse out of the leaf cells and accumulate in the intercellular spaces within the leaf.
From there, oxygen moves into the stomata, which are tiny pores on the surface of leaves. Stomata are open and close to regulate gas exchange and water loss. When the stomata are open, oxygen is released into the surrounding atmosphere through diffusion, effectively removing it as a waste product.
Transpiration, the process by which water vapor evaporates from the leaf's surface, also helps in the removal of waste products. As water evaporates from the leaf through the stomata, it carries away any dissolved gases, including oxygen.
This process ensures that waste products of photosynthesis are efficiently eliminated from the leaf and allows for the exchange of gases necessary for plant respiration.
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What was the greatest impact of the National Environmental Policy Act?
a.
the involvement of the president
b.
delegating environmental responsibility between local and national governments
c.
establishing water pollution control
d.
requiring governmental agencies to prepare environmental assessments and impact statements
Answer:
D
Explanation:
i took a test yesterday with the same question and its D
QUESTION 13 Minute volume is equal to the: a. central venous pressure divided by the resistance. b. pressure gradient divided by the resistance. c. difference between the mean arterial pressure and the resistance, divided by the central venous pressure. d. mean arterial pressure divided by the central venous pressure.
Minute volume is calculated by dividing the central venous pressure by the following formula: c. the difference between the mean arterial pressure and the resistance. Option c is Correct.
A vein's or the heart's atria's vascular pressure is known as venous pressure. It typically ranges between 5 and 8 mmHg in the right and left atriums, which is significantly lower than arterial pressure. Diastolic blood pressure plus one-third of pulse pressure (the difference between systolic and diastolic blood pressure) was calculated as mean arterial pressure.
As long as ventricular function is not compromised, changes in right ventricular end-diastolic pressure can be paralleled with changes in left ventricular end-diastolic pressure using the central venous pressure (CVP) method. Option c is Correct.
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write a brief defintion of the term protist
Answer:
A protist is a eukaryote that isn't an animal, plant, or fungus.
Answer:
a single celled organisms of the kingdom Protista, such as a protzoan or simple alg.
PLEASE ANSWER, WILL GIVE BRAINLIEST
Which of the following best describes the use of rainforest plants as anticancer drugs? a. Most rainforest plants have been tested for their cancer fighting properties.
b. Twenty-five percent of the active ingredients in cancer drugs are exclusively rainforest plants.
c. The most powerful anticancer drugs are not rainforest plants.
d. All of the above
Answer:
b. Twenty-five percent of the active ingredients in cancer drugs are exclusively rainforest plants
Explanation:
Answer:
B.
Explanation:
What process best explains how a nerve cell and a muscle cell can both
develop from the same fertilized egg?
O A. differentiation
O B. natural selection
O C. selective breeding
O D. genetic engineering
Need ASAP!
Answer:
Im pretty sure its A.
Explanation:
=just took the teskst
Answer: The correct answer is A. differentiation
Explanation: Confirmed correct.
Individual organisms of the same species are not identical. They have different genes and grow up in different environments. What is the word used to describe their differences?.
Answer:
The differences in characteristics between individuals of the same species is called variation . Some variation is passed on from parents to offspring, via genes during reproduction. ... Some variation is the result of differences in the surroundings, or what an individual does. This is called environmental variation.
The word used for describing their differences is variation.
What is genetic variation?Genetic variation is the variance in DNA sequences among members of a population. Germ cells, such as sperm and eggs, as well as somatic (all other) cells, are subject to variation. The one and only variation that develops in germ cells are inheritable, which has an impact on population dynamics and, eventually, evolution. Major causes of variation include recombination and mutation.
Genetic variety first appeared as a result of mutations. A mutation is a type of DNA sequence change that is irreversible. When a mistake in DNA replication occurs and is not fixed by DNA repair enzymes, de novo (new) mutations take place.
Another important source of genetic diversity is recombination. Each of us is made up of a combination of our parents' genetic material. When homologous DNA strands align and cross across during recombination, this genetic material is combined. Maternal and paternal DNA is effectively "shuffled" during recombination, resulting in novel variant combinations in the daughter germ cells.
Therefore, the differences in the organisms are called variations.
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Which of the following is an abiotic factor in the environment?
WHAT IS GLYCOLYSIS? EXPLAIN IN BRIEF WITH SUITABLE FIGURE.
Answer:
Glycolysis is the metabolic pathway (process) that converts one molecule of glucose into two molecules of pyruvate. In the process the pathway forms two molecules of ATP and one molecule of NADH from two molecules of ADP and phosphate and one molecule of NADH.
The importance of glycolysis is that it provides the cell with a small amount of readily accessible energy in the form of ATP and it provides the mitochondria with a source of pyruvate. There, the pyruvate can be completely oxidized to CO2 and H2O and form a large amount (~28 molecules) of ATP from ADP and phosphate. More importantly, it provides red blood cells with there only source of ATP (since they have no mitochondria).