Biology CLEP Prep Practice Exam

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Prepare for the Biology CLEP Test with comprehensive flashcards and multiple choice questions. Each question comes with explanations and hints to ensure a full understanding. Boost your exam readiness today!

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What is the main function of a cell membrane?

To allow water and solutes to move in and out of the cell
To synthesize proteins
To store genetic material
To provide structural support

The correct answer is: To allow water and solutes to move in and out of the cell

A cell membrane serves as a border between the inside and outside of the cell, controlling the movement of substances in and out. Options B, C, and D are incorrect because they do not accurately reflect the function of a cell membrane. Proteins are synthesized by ribosomes, genetic material is stored in the nucleus, and structural support is provided by the cell wall (in plant cells) or the cytoskeleton.