QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
"One primary function of the cell membrane is:
Regulating the flow of simple sugars into or out of the cell
Synthesizing substances by breaking down cell organelles
Storing carbohydrates, water, and starches for future use
Digesting carbohydrates, fats, and protein"
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Answer
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Step 1: Identify the main function of the cell membrane from the given options.
The cell membrane, also known as the plasma membrane, is a semi-permeable barrier that separates the interior of the cell from the extracellular environment. Its primary function is to regulate the flow of substances into and out of the cell.
Step 2: Eliminate incorrect options.
(a) Regulating the flow of simple sugars into or out of the cell - This option aligns with the primary function of the cell membrane, so we will keep this option. (b) Synthesizing substances by breaking down cell organelles - This statement is incorrect. Cell organelles are not broken down by the cell membrane for synthesis. (c) Storing carbohydrates, water, and starches for future use - This statement is incorrect. While cells do store energy, it is not the primary function of the cell membrane. (d) Digesting carbohydrates, fats, and protein - This statement is incorrect. Digestion of complex molecules occurs within the cell or in organelles like lysosomes, not in the cell membrane.
Final Answer
The primary function of the cell membrane is to regulate the flow of substances into and out of the cell, including simple sugars.
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