THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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activation or inhibition of many enzymes.
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amplification of the signal.
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distribution of the signal throughout the inside of the cell. d
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variation in the response.
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all the answer choices are correct
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Detailed explanation-1: -Kinase cascades are a sequence of such cycles, in which the activated protein in one tier promotes the activation of the protein in the next one. The advantages of these cascades in signal transduction are multiple and the conservation of their basic structure throughout evolution suggests their usefulness.
Detailed explanation-2: -This cascade mechanism amplifies the original signal received by the cell surface many times by activating the protein molecules and the secondary messengers in the cell.
Detailed explanation-3: -The protein kinases belong to the great family of kinases and are responsible for the mechanism of phosphorylation. They are activated by phosphorylation which in turn activates a cascade of events leading to the phosphorylation of different amino acids (3).
Detailed explanation-4: -Definition: A series of reactions in which a signal is passed on to downstream proteins within the cell by sequential protein phosphorylation and activation of the cascade components.