Body cells include nerve cells and muscle cells. Each makes a number of different proteins. For example, nerve cells make cholinesterase and muscle cells make myosin. Which statement best compares the DNA normally found in these two types of cells in an individual? A) The two cells have identical DNA sequences and use the same section of the DNA to make these two proteins. B) The two cells have identical DNA sequences, but use different sections of the DNA to make these two proteins. C) The two cells have different DNA sequences, but use the same section of the DNA to make these two proteins. D) The two cells have different DNA sequences and use different sections of the DNA to make these two proteins.
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Answer:
the two cells have identical DNA sequences but use different sections of the DNA to make these two proteins
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Answer:
Option B - The DNA is identical but they use different sections to make different proteins.
Explanation:
- Neurons and muscle cells have the same genetic makeup.
- Genotype of a person is called the genetic makeup.
- Even though they have the same genotype, because of the translation different proteins are made in both the cells are different from each other.
- The formation of a muscle cell instead of a nerve cell is because of the chromosomal DNA rearranged and mutated.
- Few proteins are the same for most of the cells.
- Nerve cella and muscle cells need to build common structures like mitochondria.
- Muscle cells consist of special proteins called actin and myosin.
- These proteins help in the contraction of the muscle.
- Muscle cells are responsible for the relaxation and contraction of muscles, they form the muscular system.
- Nerve cells are responsible for the coordination of the functions of the body by transmitting nerve impulses.
Hence, DNA is the same but the proteins formed vary in nerve cells and muscle cells.
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