19. Why does cathepsin L-mediated entry of SARS-CoV-2 depend on pH?
(A) Acidic pH triggers spike protein binding to ACE2.
(B) Acidic pH activates cathepsin L, allowing spike protein cleavage.
(C) Acidic pH increases viral genome stability in the cytoplasm.
(D) Neutral pH prevents spike protein conformational changes.
(E) High pH levels disrupt endosomal membrane integrity.
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統計: A(0), B(1), C(0), D(0), E(0) #3662527
統計: A(0), B(1), C(0), D(0), E(0) #3662527