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2021AP化学选择题第5题

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test 发表于 2022-6-10 09:15:37 | 显示全部楼层 |阅读模式
Researchers investigating the mechanism of vesicular transport assembled a cell-free system that included microtubule tracks, vesicles, and ATP. However, they observed no movement of transport of vesicles in this system. What were they missing?
  • A. an axon
  • B. contractile microfilaments
  • C. intermediate filaments
  • D. motor proteins
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answer: D
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