CELL STRUCTURES AND FUNCTION
CELL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Muscle cells are produced by the brain, but blood cells are produced by the heart.
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Different genes are activated in muscle cells than in blood cells.
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Muscles cells experience different environmental influences than blood cells.
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A mutation occurs during the development of muscle cells but not in blood cells.
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Detailed explanation-1: -Which best explains why muscle cells are different from blood cells? A mutation occurs during the development of muscle cells but not in blood cells.
Detailed explanation-2: -The correct answer is D. Muscle cells and nerve cells in one species of animal owe their differences in structure to differential gene expression. This is because these two cell types have exactly the same genes and the same types of ribosomes but they each express a different subset of these genes.
Detailed explanation-3: -Muscle cells and neurons are very different, both in form and function. And the critical genes that get switched on in order to shape each type of cell’s form and function are different too.
Detailed explanation-4: -The most striking difference between muscle cells and the majority of other cells is their multinucleated nature. Depending on its size, an individual fiber may contain hundreds of nuclei. They are found just beneath the sarcolemma and seem to be randomly distributed along the length of the fiber.