Chapter 3. 3·4–3·7 Cell membranes are gatekeepers.

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Check your understanding of concepts from 3·4–3·7 Cell membranes are gatekeepers by answering the following questions.

Question 3.1

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Correct! (See section 3·4 Every cell is bordered by a plasma membrane.)

Incorrect. (See section 3·4 Every cell is bordered by a plasma membrane.)

Question 3.2

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Correct! (See section 3·5 Molecules embedded in the plasma membrane help it perform its functions.)

Incorrect. (See section 3·5 Molecules embedded in the plasma membrane help it perform its functions.)

Question 3.3

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Correct! (See section 3·6 Faulty membranes can cause diseases.)

Incorrect. (See section 3·6 Faulty membranes can cause diseases.)

Question 3.4

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Correct. (See section 3·7 Membrane surfaces have a “fingerprint” that identifies the cell.)

Incorrect. (See section 3·7 Membrane surfaces have a “fingerprint” that identifies the cell.)

Question 3.5

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Correct. (See section 3·5 Molecules embedded in the plasma membrane help it perform its functions.)

Incorrect. (See section 3·5 Molecules embedded in the plasma membrane help it perform its functions.)

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