阿摩線上測驗
60. In nerves, vesicles can move the length of an axon at a rate that far exceeds that which would be
predicted for simple diffusion. Which of the following models best explains vesicular movement in
these cells?
(A) Depolymerization of actin microfilaments attached to vesicles pulls the vesicles toward the site of
depolymerization.
(B) Vesicles are propelled by fluid movement generated by changes in osmotic potential within the
cells.
(C) Vesicles are moved by alternate contraction and relaxation of actin-myosin "muscle" complexes.
(D) Vesicles, by virtue of their net negative charge, are attracted to positively charged regions of the
cell.
(E) Vesicles are attached to the protein kinesin, which slides along microtubules by an ATP
dependent process.
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統計： A(6), B(2), C(3), D(2), E(50) #3082819
統計： A(6), B(2), C(3), D(2), E(50) #3082819
