SZABMU AHS 2026 Cell Biology Free Quiz 7

1. What is the role of cholesterol in the plasma membrane?

A. Modulates fluidity B. Increases fluidity only C. Decreases fluidity only D. Has no effect

2. Which proteins mediate cell adhesion to the extracellular matrix?

A. Cadherins B. Integrins C. Selectins D. Immunoglobulins

3. Which type of plasma membrane invagination is associated with caveolin?

A. Clathrin-coated pits B. Caveolae C. Macropinosomes D. Phagosomes

4. Which endocytic process is specific and involves clathrin?

A. Pinocytosis B. Phagocytosis C. Receptor-mediated endocytosis D. Exocytosis

5. What is the stoichiometry of the Na+/K+ ATPase?

A. 3 Na+ out, 2 K+ in B. 2 Na+ out, 3 K+ in C. 1 Na+ out, 1 K+ in D. 3 Na+ in, 2 K+ out

6. What is a major product of the Krebs cycle besides NADH and FADH2?

A. O2 B. CO2 C. ATP D. Glucose

7. Which process uses the proton motive force to make ATP?

A. Substrate-level phosphorylation B. Oxidative phosphorylation C. Photophosphorylation D. Fermentation

8. What is the primary role of the Golgi apparatus?

A. Protein synthesis B. Glycan modification and sorting C. Lipid synthesis D. Detoxification

9. Which coat proteins are involved in ER-Golgi transport directions?

A. COPII (anterograde), COPI (retrograde) B. COPI (anterograde), COPII (retrograde) C. Clathrin (anterograde), COPII (retrograde) D. COPI and COPII both anterograde

10. What are the directional movements of kinesin and dynein on microtubules?

A. Both move toward plus end B. Kinesin to plus, dynein to minus C. Kinesin to minus, dynein to plus D. Both move toward minus

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