Based on the identification of T-cell receptor B variable gene segments in genomic DNA an estimation of the size of the human T-cell receptor B variable gene segment repertoire was embarked upon.
PCR amplification from uncloned and cloned genomic DNA sources, Southern blot hybridization, nucleotide sequencing, and cosmid cloning were used to identify T-cell receptor B variable gene segments in numerous irrelevant individuals. The benefits of this strategy lead to many findings such as there was a possibility of discriminating between alleles at the products of different loci and the same locus, T-cell receptor B variable gene segments c expressed at very low levels in libraries of Complementary DNA are detectable. 63 unique T-cell receptor B variable gene segments were sequenced and identified .Out of 63 , 51 contained Thirty-four cosmid clones which were isolated and later filtered for the existence of further T-cell receptor B variable subfamily members.The results were that human T-cell receptor B variable germline repertoire encodes at least 63 T-cell receptor B variable gene segments out of which 52 are functional.
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hi im ava :) could u help me?
Use what you learned about Mendel's experiments to answer the following questions.
Studying one trait at a time ensures that multiple
_____ are not changing simultaneously.
Give one reason Mendel chose pea plants for his experiment:
Answer:variables
Explanation:are not charging simultaneously
Answer:
variables
Explanation:
Pea plants reproduce sexually.Male and female sex cells on pea plants allowed Mendel to cross pollinate them.Pea plants have a variety of traits.
Need help here is the ss
Answer:
There are omnivores, carnivores, herbivores, and decomposers. Omnivores eat both plants and animals, carnivores eat animals (meat), herbivores eat plants (producers), and decomposers feed on dead matter.
What effect can fertilizer runoff have on an aquatic ecosystem?
a.
increased plant growth leading to a decrease in fish populations
b.
increased plant growth leading to an increase in fish populations
c.
decreased plant growth leading to a decrease in fish populations
d.
decreased plant growth leading to an increase in fish populations
Please select the best answer from the choices provided
A
B
C
D
Answer:
A
Explanation:
Hopefully this helps
Answer:
A
Explanation:
Trust the process - Edge 2021 -
Make a hypothesis about how you think the two species of Paramecium will grow alone and how they will grow when they are grown together.
why do the ecosystems in the Canadian north have relatively low diversity?
Answer:
natural ecosystem
Explanation:
animal plant tree house menu
gdhdbdjjdjdbdbbxbdhbdhdbhdbdbdhjd
Glucose is an example of a ____ sugar
A) simple
B) complex
C) starchy
Glucose is a simple sugar A)
Which of the following is true about photosynthesis and cellular respiration?
Answer:
no option
Explanation:
there is no any alternativesfor the question.
Which situations described are examples of a standards and measurements issue related to land reclamation? Select the two correct answers.
A mining company claims that protecting an endangered species should not be included in permitting.
Vegetation introduced to a reclaimed site is an invasive species that isn't native to the area.
Despite permit agreements, a mining company abandons a mine site after closure of the mine.
Monitoring of water quality at a reclaimed site shows high levels of metals, like lead, in the water.
The funding by a local developer to repurpose a reclamation site as a shopping center is withdrawn.
Answer:
Vegetation introduced to a reclaimed site is an invasive species that isn't native to the area.
Monitoring of water quality at a reclaimed site shows high levels of metals, like lead, in the water.
Explanation:
Land reclamation is the process of creating new lands from the sea and it involves filling the areas with a large number of heavy rocks, cement, sand, and soil. Land can be reclaimed for agricultural purposes such as draining the swamplands and converting them into farmlands. The land reclamation practices also include the landfilling and restoration of beaches. Such as the sand or mud. Countries such as bangladesh, Netherlands, and South Korea have used land reclamation as a method of development.If you had a mild allergic reaction to an allergen in the past, you are not at risk of that allergen causing anaphylaxis in the future?
True or false
Answer:
FALSE WHY FOR EXAMPLE CHICKEN FOX IF YOU HAVE BEFORE DIDNT RETURN AGAIN
PLEASEEEE HELP 50 POINTS!!!!!!! Mitosis is vital for many different functions in multicellular organisms. However, mitosis is also involved in some pathological processes such as cancer. Suppose a physician is treating a patient with breast cancer and prescribes a chemotherapeutic regimen that inhibits cells during the mitotic phase.
Which of the following best describes the side effects of this regimen in the treatment of cancer?
A)impaired wound healing and stunted growth due to inhibition of a process that results in genetically distinct daughter cells
B)impaired wound healing and stunted growth due to inhibition of a process that results in genetically identical daughter cells
C)increased inflammation and scarring of the connective tissue due to stimulation of a process that results in genetically distinct daughter cells
D)increased inflammation and scarring of the connective tissue due to stimulation of a process that results in genetically identical daughter cells
Answer:
its (A)
Explanation:
also you repeated the questions
The statement 'impaired wound healing and stunted growth produce genetically distinct daughter cells' BEST describes the side effects of this regimen in cancer treatment (Option A).
Mitosis is a cell division process in which a parent cell divides to produce two genetically identical daughter cells.Mitosis produces somatic (body) cells, whereas meiosis produces sex (germinal) cells.In cancer, mitosis may be impaired, thereby the daughter cells are not genetically identical.In conclusion, the statement 'impaired wound healing and stunted growth produce genetically distinct daughter cells' BEST describes the side effects of this regimen in cancer treatment (Option A).
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does anyone know how to do monohybrid crosses???
Answer:
no
Explanation:
I need help please ASAP..
Where did the majority of life originate from: land or ocean?
Answer:
Explanation:
"Life on earth probably began in the depths of the ocean" i qouted it from Royal Society of Chemistry journal Chemical Society Reviews
1. cells are composed of chemicals, and both the structure and function of cells are regulated by basic chemistry principles.
The cell is the smallest level of organization and is composed of chemicals and atoms. These chemicals regulate the structure and functioning. Thus, the statement is true.
What is a cell?According to a definition, a cell is the central key component of all known living things and is made up of known chemical, atomic, and molecular compositions. They are joined by a bond that serves a number of purposes.
The essential substances and components at action are those that give the cell its structure and support its intrinsic activities. Examples of these substances and elements include carbohydrates and lipids.
Therefore, the statement is true.
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Your question is incomplete, but most probably your full question was, that cells are composed of chemicals, and both the structure and function of cells are regulated by basic chemistry principles. (True/false).
How are the Venus fly trap and the pitcher plant classified in their ecosystems? (select all that apply.)
producer
decomposer
consumer
Answer:
Producer and Decomposer.
Answer:
Producer
Explanation:
I do know what the Venus fly trap is but I don’t know what the pitcher plant is sorry
Do you believe that environmental factors have shaped human characteristics. If so in what ways?
Answer:
Yes
Explanation:
Environmental factors caused many different traits in people, for instance the different skin pigments of people depend on where their ancestors came from. European descendents tend to absorb more sunlight and get sunburned easily, whereas African descendents have skin that is suitable for their environment. Other characteristics include immunity to malaria or the speed at which one's blood can carry oxygen. These traits came slowly through natural selection as people evolved to become suited for their environment.
The integument consists of the epidermis, which is composed of _____________, and the dermis, which is composed primarily of ____________ connective tissue.
The integument consists of the epidermis, which is composed of stratified epidermis, and the dermis, which is composed primarily of dense irregular connective tissue.
The outermost layer of the body is called as skin or integument. It can be divided into three layers- the outermost epidermis, the middle layer dermis and the deepest layer hypodermis.
The epidermis protects the body from external environment and keeps the body hydrated, produces new skin cells and also contains melanin which gives the skin its colour. It is made up of layers of stratified epidermal cells.
Dermis layer have dense regular connective tissue, blood vessels, oil and sweat glands.
The hypodermis is the bottom layer which performs functions like storing energy, connecting with bones and muscles, and protecting from harm.
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Cellular Respiration is the process in which cells produce the energy they need to survive. In cellular respiration, cells use oxygen to break down the sugar glucose and store its energy in molecules of adenosine triphosphate (ATP).
Cellular respiration is critical for the survival of most organisms because the energy in glucose cannot be used by cells until it is stored in ATP.
What does the passage and diagram above best imply?
A. Oxygen and glucose are both products of cellular respiration
B. Cellular respiration refers to the metabolic reactions and processes which occur in the nucleus of organisms.
C. Cellular respiration is a process that converts glucose into chemical energy (ATP) in the chloroplast of the cell
D. The main product of cellular respiration is ATP waste products include carbon dioxide and water
Answer:
D. The main product of cellular respiration is ATP waste products include carbon dioxide and water
Explanation:
The main product of cellular respiration is ATP waste products include carbon dioxide and water.
What is Cellular respiration?
A glucose molecule gradually decomposes into carbon dioxide and water during cellular respiration. In the process of transforming glucose, some ATP is directly created.
But far more ATP is later created through a procedure known as oxidative phosphorylation. The electron transport chain, a collection of proteins enmeshed in the inner membrane of the mitochondrion, is what drives oxidative phosphorylation.
Glycolysis. In a new window, click here During glycolysis, the six-carbon sugar glucose goes through a number of chemical changes. It ultimately transforms into two molecules of pyruvate.
Therefore, The main product of cellular respiration is ATP waste products include carbon dioxide and water.
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George has several plants in his garden. Once in a while, he adds fertilizer to the soil. The leaves absorb the nutrients in the fertilizer and look healthy. If a cell is compared to a plant, which organelle helps transport fertilizer from the soil to the leaf?
The organelle that helps transport fertilizer from the soil to the leaf is Xylem.
What is Fertilizer?Any substance of synthetic origin sprayed to soil or plant tissues to provide plant nutrients is referred to as a fertilizer or fertilizer. It's possible to distinguish fertilizers from liming agents or even other non-nutrient soil additives. There are numerous natural and man-made sources of fertilizer. The three main macronutrients of nitrogen (N), phosphorus (P), and potassium (K) are the focus of fertilization for the majority of modern agricultural methods.
Supplements for micronutrients, such as rock dust, are occasionally used. Farmers use a range of methods to apply these fertilizers, including dry, pelletized, or aqueous application processes, huge agricultural equipment, or hand-tool techniques.
Compost, animal manure, human excrement, harvested minerals, crop rotations, and byproducts of human-nature businesses were historically used as fertilizers.
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If you saw a pressure center like the one shown above on a weather map, what would you predict about the weather? What questions would you need to ask in order to make a better prediction?
If you saw a pressure center like the one shown above on a weather map, then it signifies the presence of a cyclone and the question to be asked is the direction of the wind in both hemispheres.
What is Cyclone?This is referred to as a weather condition which is characterized by a large air mass that rotates around a strong center of low atmospheric pressure and the opposite of this is referred to as anticyclone in terms of the wind direction in the northern and southern hemisphere.
In the case of a cyclone, the wind moves counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere as depicted in the diagram given while the anticyclone moves clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.
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write a simple paragraph describing the protein structure USING THE WORD GENE And AMINO ACID
Answer:
Proteins or prostheses are macromolecules formed by linear chains of amino acids. Proteins are made up of amino acids and this sequence is determined by the nucleotide sequence of their corresponding gene.
What is the primary function of the phosphorylation cascade in the signal pathway mediation of gene expression?
Amplification of the signal
Conversion of transcription into translation
Initiation of the signal
Reduction of the hormone concentration
Answer:
A) amplification of the signal
Explanation:
i got it right :)
13. What does DNA stand for?
14. What does the information contained in DNA determine?
15. What does DNA code for?
16. What are the monomers of DNA called?
17. What are the four nitrogen bases contained in DNA?
р
Nucleotide
Base
a.
b.
S
C.
d.
18. What phrase is used to describe the structure of DNA?
19. What is the backbone of DNA composed of?
20. Which base pairs with adenine?
Which base pairs with cytosine?
Answer:
13. deoxyribonucleic acids
14. DNA provides instructions for how each part of an organism will develop
15. instructions needed to make the proteins and molecules essential for our growth
16. nucleotides
17. adenine, guanine, cytosine, thymine
18. double helix
19. alternating sugar and phosphate groups
20. adenine pairs with guanine and cytosine pairs with thymine
The study of genes is called genetics.
The correct answer is mentioned below.
What is DNA?It is a component that stores all the genetic information of the human.
According to the question,
13. deoxyribonucleic acids
14. DNA provides instructions for how each part of an organism will develop
15. instructions needed to make the proteins and molecules essential for our growth
16. nucleotides
17. adenine, guanine, cytosine, thymine
18. double helix
19. alternating sugar and phosphate groups
20. adenine pairs with guanine and cytosine pairs with thymine
Hence, the correct answer to the question is described.
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What are the 4 stages of mitosis
I WILL GIVE BRAINLIEST FOR THE CORRECT ANSWER!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
During this process, sister chromatids separate from each other and move to opposite poles of the cell. This happens in four phases called:
Prophase, Metaphase, Anaphase, and Telophase
Explanation:
Hope this helps :)) <333
what characteristic of life does this statement represent? an owls night vision allows it to see movement of its prey at night.
The characteristic of life that the statement "an owls night vision allows it to see movement of its prey at night" represents is adaptation.
The morphological, physiological, and behavioral characteristics of an organism that enable it to survive and reproduce in its environment are known as adaptation. Physical modifications to the organism are structural, a change in an organism's behavior is known as behavioral, physiological adaptation is a bodily function that aids in an organism's survival and/or reproduction. To be able to survive, all species must be able to adapt to their environment. This entails adapting in order to survive the ecosystem's climatic conditions, predators, and other species that compete with them for resources like food and habitat.
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Why do commercial airliners encounter very little turbulence above 25,000 feet?
A. jet stream produces a much smoother flow of air.
B. Water vapor has mostly disappeared at colder elevations and its effect on weather turbulence.
C. The air is so thin at altitudes above 25,000 feet that turbulence has much less effect.
D. There are no clouds above 25,000 feet.
In reporting turbulence, it is usually classed as light, moderate, severe or extreme. The degree is determined by the nature of the initiating agency and by the degree of stability of the air.
Light turbulence momentarily causes slight changes in altitude and/or attitude or a slight bumpiness. Occupants of the airplane may feel a slight strain against their seat belts.
Moderate turbulence is similar to light turbulence but somewhat more intense. There is, however, no loss of control of the airplane. Occupants will feel a definite strain against their seat belts and unsecured objects will be dislodged.
Severe turbulence causes large and abrupt changes in altitude and/or attitude and, usually, large variations in indicated airspeed. The airplane may momentarily be out of control. Occupants of the airplane will be forced violently against their seat belts.
In extreme turbulence, the airplane is tossed violently about and is impossible to control. It may cause structural damage.
antigen processing involves the breakdown of protein antigens and the subsequent association of peptide fragments on the surface of antigen-presenting cells with
antigen processing involves the breakdown of protein antigens and the subsequent association of peptide fragments on the surface of antigen-presenting cells with MHC class I or class II proteins.
Antigen is any foreign particle or molecule that can trigger a n immune response in the body.
After the body encounters the antigen cells like macrophages, B cells and dendritic cells will recognise and destroy them. The parts of the antigen will be presented by the macrophages to the T cells and hence they are also called Antigen presenting cells.
Antigen presenting cells will showcase the antigen or its part to the T cells. This is done with the help of a protein called major histocompatiblity complex or MHC complex proteins.
MHC proteins are present on cell surface and holds the antigens to showcase them to T cells.
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Where is most of the mass an a atom
Explanation:
nucleus
Over 99.9 percent of an atom's mass resides in the nucleus. The protons and neutrons in the center of the atom are about 2,000 times heavier than the electrons orbiting around it.
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Describe how an organism is classified currently hy Biologist
Answer: All living organisms are classified into groups based on very basic, shared characteristics. Organisms within each group are then further divided into smaller groups. The classification of living things includes 7 levels: kingdom, phylum, classes, order, families, genus, and species.
Explanation:
Answer:
Organisms are classified by how similar they are to another organism.
They also find similarities with the DNA and examining physical features.
Explanation:
Modern biologists use DNA for this. Testing an organisms DNA can greatly help in classifying organisms.
what is the relationship between the number of organisms and the energy available as you go up through the trophic levels? group of answer choices chegg