Module 11 Multiple Choice Questions PDF

1\. What is the primary role of cell polarity? - A. Organizing DNA replication - B. Asymmetric organization of the plasma membrane, cytoskeleton, and organelles - C. Facilitating cell division - D. Enhancing cell metabolism Answer: B 2\. What process primarily drives the movement o...

1\. What is the primary role of cell polarity? - A. Organizing DNA replication - B. Asymmetric organization of the plasma membrane, cytoskeleton, and organelles - C. Facilitating cell division - D. Enhancing cell metabolism Answer: B 2\. What process primarily drives the movement of a lamellipodium at the leading edge of a moving cell? - A. Microtubule polymerization - B. Dynein-based movement - C. Actin-polymerization-dependent protrusion - D. Filopodia extension Answer: C 3\. Which of the following describes filopodia? - A. Two-dimensional network of actin filaments - B. One-dimensional structure with parallel bundles of actin filaments - C. Microtubule-based appendages for cell movement - D. Specialized regions in the nucleus Answer: B 4\. What signal primarily guides neutrophils to a site of bacterial infection? - A. Chemotaxis - B. Phagocytosis - C. Synaptotagmin signals - D. Axon migration Answer: A 5\. Which motor protein is responsible for the bending motion of cilia and flagella? - A. Kinesin - B. Myosin - C. Dynein - D. Actin Answer: C 6\. How are cilia and flagella rooted at the cell surface? - A. Through GTP-binding proteins - B. By basal bodies derived from centrioles - C. Through direct attachment to the ECM - D. Via focal adhesions Answer: B 7\. Which structure is responsible for transporting mitochondria and synaptic vesicles along axons? - A. Actin filaments - B. Microtubules with dyneins and kinesins - C. Intermediate filaments - D. Lamin filaments Answer: B 8\. What protein is involved in actin filament severing and recapping during platelet activation? - A. Kinesin - B. Dynein - C. Gelsolin - D. Tropomyosin Answer: C 9\. Which type of signal can guide long-distance cell migration? - A. Chemotactic signals only - B. Electrical signals - C. Both diffusible and non-diffusible signals - D. Mechanical forces only Answer: C 10\. Which cytoskeletal component is most directly involved in the growth cone\'s dynamic instability in neurons? - A. Actin filaments - B. Microtubules - C. Intermediate filaments - D. Myosin motors Answer: B