| 31. | Why do some redox reactions in cells result in the transfer of electrons from a reductant with a higher standard redox potential to an oxidant with a lower standard redox potential? |
| a. | Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions |
| b. | The rules governing oxidation and reduction apply only in vitro, and not in vivo |
| c. | Electrons always go from reductants with high redox potentials to oxidants with low redox potentials |
| d. | None of the above |
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Answer: (a).Redox potentials are defined under standard conditions, and cellular conditions are typically not standard conditions
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| 32. | Lysosomes are associated with |
| a. | photosynthesis |
| b. | respiration |
| c. | storage |
| d. | digestion |
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Answer: (d).digestion
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| 33. | Which cell type is likely to have the most mitochondria? |
| a. | Fast-twitch muscle |
| b. | Slow-twitch muscle |
| c. | Liver cells |
| d. | Adipose cells |
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Answer: (b).Slow-twitch muscle
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| 34. | Tonoplast is a membrane around |
| a. | cytoplasm |
| b. | vacuole |
| c. | nucleus |
| d. | mitochondria |
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Answer: (b).vacuole
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| 35. | A cell without cell wall is called |
| a. | apoplast |
| b. | protoplast |
| c. | symplast |
| d. | none of these |
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Answer: (b).protoplast
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