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maria [59]
3 years ago
11

Free nucleotides must be available in a cells nucleus to produce mrna strands. where do these free nucleotides come from

Biology
1 answer:
iren [92.7K]3 years ago
8 0
<span>All four nucleotides (adenine, guanine, thymine, cytosine) are synthesized in the liver. The nucleotides can be synthesized de novo or recycled through salvage pathways. The synthesis occurs in the cytoplasm of the cell, not within a specific organelle. The components which are used for the nucleotide synthesis are derived from biosynthetic precursors of carbohydrate and amino acid metabolism, and from ammonia and CO2.</span>
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Which of the following would be classified as concepts in anatomy?
Lera25 [3.4K]

Concepts in anatomy from the given options include:

  • The brain is composed of two hemispheres.
  • Each kidney contains approximately 6-10 pyramids.
  • The muscle on the back of the arm has three heads of origin.
  • Study of form.

<h3>What is anatomy?</h3>

Anatomy is a branch of biology that is concerned with the study of the structure of living organisms and their various parts.

Anatomy studies the position of body structures as well as the position of related structures or organs of the body.

Anatomy also studies how the structure of these body parts relates to their functions.

Therefore, concepts in anatomy from the given options are:

  • The brain is composed of two hemispheres.
  • Each kidney contains approximately 6-10 pyramids.
  • The muscle on the back of the arm has three heads of origin.
  • Study of form.

In conclusion, anatomy deals with structure of body parts of living organisms.

Learn more about anatomy at: brainly.com/question/896286

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3 0
1 year ago
The antigen-binding sites of an antibody molecule are formed from the molecule's variable regions. why are these regions describ
tino4ka555 [31]

The antigen-binding sites of an antibody molecule are formed from the molecule's variable regions which are described as so because their amino acid sequences can be different on different antibodies.

The specificity of antibodies is determined by the variable regions found at their endpoints. Antibodies are specialized proteins secreted by B-cells of the immune system. They are also called immunoglobulins. They contain four polypeptide chains that comprise two heavy chains and two light chains to form a Y-shaped molecule.

The variable regions, more specifically the hypervariable regions of an antibody, have a high ratio of different amino acids with the most common amino acids provided in one place. The variable region serves as the antigen-binding site while the constant region found below the variable region is determined to invade the antigen.

Antibodies are preserved in our body to identify the antigen the next time it encounters. They send the signals to the other body parts to reject the antigen and invade it.

To know more about variable regions of antibodies, refer to the following link:

brainly.com/question/17439586
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8 0
2 years ago
Which of the following is not a difference between DNA and RNA?
bazaltina [42]

Answer: DNA contains alternating sugar-phosphate molecules whereas RNA does not contain sugars

Explanation:

5 0
3 years ago
What is meant my urbanization and industrialization? How they degrade the environment ​
Whitepunk [10]
Urbanization is defined as “the process of making an area more urban” or an increase in the amount of people living in towns or cities. Industrialization is defined as “the development of industries in a country or region on a wide scale” meaning a strong military with modern weapons, factories to create things, modern cars and boats etc. Urbanization and industrialization put a strain on the environment because of carbon gases emitted, effectively warming the earth up, destruction of trees which lowers our overall oxygen available, destruction of animal homes which will kill animals or cause unwanted interactions between humans and animals, and the pollution of natural resources such as local ponds, streams or the ocean.
7 0
3 years ago
Plants make their own food using energy that comes from the
zubka84 [21]
Sun which produces sunlight
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3 years ago
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