Biology CLEP Prep Practice Exam

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Are you gearing up for the Biology CLEP exam? Prepare like a pro with our Biology CLEP Prep Practice Exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

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.