Which of the following statements best explains how the cell membrane regulates what goes in an out of the cell? a) the membrane allows only certain molecules to move into the cell b) the membrane destroys most molecules so that they do not enter the cell c) the membrane changes only certain molecules into ions before they move into the cell d) the membrane allows most molecules to transfer energy to the cell without entering the cell

The statement "The membrane allows only certain molecules to move into the cell" explains how the cell membrane regulates what goes in an out of the cell.

Option A

Explanation:

Cell membrane is a protective wall between intracellular and extracellular environment. It acts as regulator to decide what may enter or exit the cell and medium for transportation of materials necessary for survival. This movement can be passive (without cellular energy need) or active (cell need to expand energy for transfer).

It balances cell potential thus cell membrane play role of selective filter.  As they are selectively permeable permits fat-soluble or hydrophobic molecules and gases, such as oxygen and carbon dioxide, they can quickly send out via the membrane.

a: her mother, brother, and father died

b: she lied when she didn't think people wanted the truth

c: a governess was mean to her

explanation:

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