SZABMU AHS 2026 Cell Biology Free Quiz 9

1. What is a key function of glycosylation in the secretory pathway?

A. Protein folding and stability B. Lipid synthesis C. DNA replication D. Cytoskeletal organization

2. Which organelle is the primary site of lipid biosynthesis?

A. Mitochondria B. Endoplasmic reticulum C. Golgi D. Peroxisomes

3. Which proteins are upregulated in response to stress to assist protein folding?

A. Proteases B. HSPs C. Kinases D. Phosphatases

4. What recognizes the signal peptide of proteins destined for the ER?

A. Ribosome B. SRP C. SRP receptor D. Translocon

5. Which pathway is activated by ER stress due to misfolded proteins?

A. Unfolded protein response (UPR) B. Heat shock response C. Oxidative stress response D. DNA damage response

6. What is the pH inside lysosomes?

A. Neutral pH B. Acidic pH (≈4.5-5) C. Basic pH D. Variable pH

7. What process regulates mitochondrial shape and is mediated by Drp1?

A. Fusion only B. Fission only C. Both fission and fusion D. Neither

8. What structure increases the surface area of the inner mitochondrial membrane?

A. Outer membrane B. Inner membrane with cristae C. Matrix D. Intermembrane space

9. Which enzyme converts CO2 and water to carbonic acid?

A. Carbonic anhydrase B. Catalase C. Peroxidase D. Superoxide dismutase

10. What is a feature of epithelial cell plasma membranes?

A. Random distribution B. Apical and basolateral domains C. Uniform distribution D. Cytoplasmic localization