THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They could compensate by receiving nutrients via an a factor.
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They could develop normally in response to neurotransmitters instead.
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They could divide but never reach full size.
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They would not be able to multiply in response to growth factors from nearby cells
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Detailed explanation-1: -Answer and Explanation: If a target cell lacks receptors for local regulators, the cell will not be able to interact with the hormone.
Detailed explanation-2: -2) What is most likely to happen to an animal’s target cells that lack receptors for local regulators? They might not be able to multiply in response to growth factors from nearby cells.
Detailed explanation-3: -Often these receptors act to modify mRNA synthesis and thus protein synthesis within the cell. They accomplish this by the ligand-receptor complex being able to travel to the nucleus and bind DNA at a gene regulatory site, something that the receptor and ligand on their own would be unable to do.
Detailed explanation-4: -Elevated levels of the hormone insulin in the blood trigger downregulation of the associated receptors. When insulin binds to its receptors on the surface of a cell, the hormone receptor complex undergoes endocytosis and is subsequently attacked by intracellular lysosomal enzymes.
Detailed explanation-5: -A target cell responds to a hormone because it bears receptors for the hormone. In other words, a particular cell is a target cell for a hormone if it contains functional receptors for that hormone, and cells which do not have such a receptor cannot be influenced directly by that hormone.