Cytoskeleton and Its Filaments Practice Questions
20 free Cytoskeleton and Its Filaments practice questions for the Zoology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
20 questions
All Cytoskeleton and Its Filaments questions
- Q1. Which protein subunit is the primary building block of microfilaments?
- Q2. Microtubules exhibit a characteristic known as 'dynamic instability.' This process is primarily driven by the hydrolysis of which molecule?
- Q3. Which cytoskeletal element is responsible for forming the contractile ring during cytokinesis in animal cells?
- Q4. Which of the following intermediate filaments is specifically found in the nucleus and provides structural support to the nuclear envelope?
- Q5. Which motor protein typically moves cargo toward the 'minus' end of microtubules, usually toward the centrosome?
- Q6. The '9+2' arrangement of microtubules is a structural hallmark of which cellular organelles?
- Q7. In the context of muscle contraction, actin filaments interact with which motor protein?
- Q8. Which of the following is a key functional difference between intermediate filaments and the other two cytoskeletal components?
- Q9. The drug Colchicine inhibits cell division by interfering with which process?
- Q10. Which protein cross-links the microtubule doublets in cilia to limit sliding and cause a bending motion?
- Q11. Keratins are a diverse group of intermediate filaments found predominantly in which tissue type?
- Q12. What is the role of the gamma-tubulin ring complex (γ-TuRC)?
- Q13. Which cytoskeletal component is most responsible for the structure of microvilli in the intestinal epithelium?
- Q14. The 'treadmilling' phenomenon in actin filaments occurs when:
- Q15. Which structure serves as the MTOC (Microtubule Organizing Center) for the axoneme of a cilium?
- Q16. Intermediate filaments are grouped into six classes. To which class do neurofilaments belong?
- Q17. During amoeboid movement, the transition from ectoplasm to endoplasm is largely regulated by the assembly and disassembly of:
- Q18. Which of the following describes the polarity of a microtubule?
- Q19. Which protein is responsible for 'severing' actin filaments to promote cytoplasmic fluidity?
- Q20. Desmosomes and hemidesmosomes anchor cells to each other and the extracellular matrix by connecting to which cytoskeletal element?