Embedded in the Plasma Membrane of Cells, Cholesterol Molecules Act

question 15

Multiple Choice

Embedded in the plasma membrane of cells, cholesterol molecules act to

• A) participate in pinocytosis.
• B) destabilize the membrane, leading to heart attacks.
• C) stabilize the membrane.
• D) make the membrane more resistant to freezing.

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Definitions:

[H+]

[H+] represents the concentration of hydrogen ions in solution, commonly associated with acidity.

pH

A scale used to specify the acidity or basicity of an aqueous solution, ranging from 0 to 14.

[HCO3-]

[HCO3-] is the chemical notation for the bicarbonate ion, a key intermediate in the carbon dioxide transport and pH balance mechanisms in living organisms.

pH

A measure of the hydrogen ion concentration in a solution, indicating its acidity or alkalinity on a scale where 7 is neutral, lower values are acidic, and higher values are basic.