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Cell Biology Practice Test: Cytoskeleton & Cell Motility
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Avg score: 68% Most missed: “Intermediate filaments are _________________”
Topics include: Cytoskeleton Basics, Cytoskeleton, Microtubules, Cilia, Intermediate Filaments, Microfilaments, Muscle Contractility, & Non-muscle Motility. The cytoskeleton is a system of protein filaments that crisscross the inside of a cell. It's responsible for cell motility, which includes the movement of entire cells and the internal transport of organelles and other structures.  The cytoskeleton is made up of three elements: Actin microfilaments: Thought to provide protrusive and contractile forces Microtubules: Form a polarized network that allows organelle and protein movement... Show more
Cell Biology Practice Test: Cytoskeleton & Cell Motility
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25 Questions

1. How many protofilaments are present in a single mammalian microtubule?
2. Neurofibrillary tangles, found in the brain cells of persons with neurodegenerative disorders consists of _______________
3. The type V intermediate filaments are called ___________
4. ________ of the sacromere remains unaffected during the muscle contraction.
5. Muscle cells are formed from the fusion of ___________
6. Cilia and flagella are ________________
7. Unlike other cytoskeletal elements, in the assembly of intermediate filaments there is no requirement of ______________
8. Melanosomes are transferred into the developing hair by myosin ____
9. Filamin is an example of ___________ proteins.
10. Intermediate filaments are _________________
11. Monomer-sequestering proteins are responsible for high concentration of G-actin in nonmuscle cells.
12. Lamellipodium is a protrusion of ________________
13. An organism in which cell motility takes place solely as a result of actin polymerization is ____________________
14. Troponin is composed of _____ subunits.
15. The faster growing end of the microfilament is the plus-end.
16. The drug cytochalasin blocks the _____________
17. Which type of myosins move toward the minus-end of a microfilament?
18. Which type of macromolecules make up the wall of microtubules?
19. The “Sliding filament model of muscle contraction” was proposed in the year ____________
20. Movement of materials in an axon are mediated through ________________ that serve as cytoskeletal tracks.
21. Atomic force microscopy uses _____________
22. Nucleation is the slowest step in actin filament formation.
23. Which microtubule-associated motor protein is responsible for the movement of cilia?
24. Which of the following binds to G-actin?
25. Microtubules are formed of the protein ____________