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There are 2 cells. The cell membrane of cell A becomes too fluid while the cell membrane of cell B becomes too much stiff. What will happen to both cells?

Option: 1

Cell A will survive while cell B will die.

Option: 2

Cell A will die while cell B will survive.

Option: 3

Both cells will die.

Option: 4

Both cells will survive.

Answers (1)


The configuration of the phospholipid tails and cholesterol inside the membrane closely controls the fluidity of the cell membrane; if the membrane becomes overly fluid or too viscous (stiff), cell function can be compromised, which increases the risk of cell death. Hence option 3 is the correct answer.

Explanation for the incorrect options :

Option 1 is incorrect because cell A will also die as the plasma membrane becomes overly fluid and disrupts normal cellular processes.

Option 2 is incorrect because cell B will also die as immune cells, which can alter their form to pass through capillary walls and enter tissues, would no longer be able to do so if the cell membrane became too viscous. Also, proteins wouldn't be transported and localized on the cell surface effectively. This is a concern since many proteins are receptor proteins or channel proteins, which move chemicals like glucose or interact with the environment. These two important tasks might be disrupted which can lead to cell death.

Option 4 is incorrect because both the cell will die if the plasma membrane becomes too fluid or viscous as it disturbs the function of the cell.

Posted by

seema garhwal

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