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14 December, 02:22

A molecule is applied to a cell and the intracellular Ca2 + concentration is found to transiently rise. You are curious to understand the mechanism of this molecule so you remove all of the Ca2 + from outside the cell but find that the same effect is observed. You conclude that the molecule is probably having this effect because it sets into motion a chain of events that includes ...

A. activation of adenylyl cyclase.

B. increasing the intracellular concentration of cAMP.

C. activation of phospholipase C.

D. blocking the Na+/K + pump.

E. activation of a phosphodiesterase.

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Answers (1)
  1. 14 December, 05:21
    0
    The correct answer is option C.

    Explanation:

    Phospholipase C comes in the category of membrane-associated enzymes, which plays an essential role in the cell physiology of eukaryotes, mainly in the process of signal transduction. One of the general features of the phospholipase C pathway is that it enhances the concentration of calcium within the cell's cytoplasm.

    With the stimulation of phospholipase C within a cell, calcium generally gets discharged from the intracellular compartments, which eventually results in the upsurge of calcium levels within the cell's cytoplasm.
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