Choose the membrane molecule responsible for aiding passage of polar molecules into and out of the cell.

A. cell surface proteins
B. transmembrane proteins
C. carbohydrate chains
D. phospholipids


Answer: B

Biology & Microbiology

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A human body cell that has 46 chromosomes goes through mitosis and produces two daughter cells that each have ________ chromosomes

a. 92 b. 23 c. 2 d. 46

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In terms of the evolution of nervous systems, which events tend to occur in concert with one another?

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Proper cross-matching of blood type is essential for safe blood transfusion

What is the general rule for safe blood transfusion, and what are the consequences if a patient receives the incorrect blood type by accident? If a patient's blood type is unknown, what is the safest course of action?

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