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BIO301 Final Exam (Cell Biology)
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MCQs on the cell and its structures, including molecular compounds, structural features, and organelles including the nucleus, cytoskeleton, and extracellular matrix. Particular emphasis on transport mechanisms and membrane trafficking, cellular signaling, the cell cycle including mitosis and meiosis, and gene expression.
 

BIO301 Final Exam (Cell Biology)
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25 Questions

1. In which cell-cycle phase(s) would you expect the yeast cell to be?
2. In mammals, a DNA damage signal will lead a cell to arrest the cell cycle. In what way will it accomplish this?
3. Identify the mitotic phase or cell behavior during which the following occurs in animal cells: chromosomes are lined up along the mitotic spindle.
4. Which major membrane component includes molecules that span the membrane, remaining fixed in it, as well as molecules that are indirectly associated with the membrane?
5. What property of actin assembly leads to its very high turnover in cells that is, causing it to rapidly assemble and disassemble?
6. Identify the mitotic phase or cell behavior during which the following occurs in animal cells: chromosomes de-condense.
7. Identify the stage of meiosis I prophase during which the following occurs: homologous chromosomes are tightly 'zippered' together into a synaptonemal complex.
8. If you wanted a protein to remain in or return to the ER after processing, which of these types of vesicle would you want?
9. In which cell-cycle phase(s) would you expect the early embryonic cell to be?
10. In the extracellular matrix of tendon cells, you would expect to find:
11. Which of the following types of organelles would you expect to see in abundance in ovarian cells?
12. A plant seed would need which of the following organelles for energy, as it converts fatty acids to carbohydrates?
13. The following protein example describes which level of its structure? Hemoglobin is a 'heterotetramer' because it has four polypeptide chains that do not interact symmetrically.
14. Identify the mitotic phase or cell behavior during which the following occurs in animal cells: a contractile ring of actin and myosin filaments pinch the plasma membrane inward.
15. Why are sexual reproduction and meiosis considered beneficial to species in terms of evolutionary forces and selection?
16. If you wanted a molecule to be brought into the cell via receptor-mediated endocytosis, but the formation of clathrin-coated pits had been inhibited, what type of vesicle would you want?
17. Consider a fur seal in the arctic: in winter, when the seal still needs to be active without freezing, which type of organelles will be particularly useful?
18. Which of these does not provide suggestive evidence of rRNA's catalytic action in ribosomes?
19. If you were to lower the concentration of calcium within muscle cells, what would happen and why?
20. Answer the following question about the nuclear pore complex. If there were an error in the α subunit of importin that prevented it from binding, which of the following would happen?
21. A sperm is amotile (non-moving), because its flagellum does not function properly. What could cause this?
22. Which of the following events occurs during the anaphase of meiosis I?
23. Which of the following is not one of the ways in which meiosis is different from mitosis?
24. Cardiac-muscle cells that must communicate with adjacent cells using electric impulses most likely have what kind of junctions between them?
25. What organelle is the site at which cholesterol is made?