AP Biologymediummcq1 pt
Which drug would most directly block mitosis?
A.One that prevents microtubule assembly
B.One that inhibits ribosomes
C.One that blocks photosynthesis
D.One that dissolves lipids
Explanation
Core Concept
Mitosis depends on dynamic spindle microtubules, so drugs that disrupt microtubule assembly or dynamics can block chromosome segregation. Colchicine inhibits microtubule polymerization, whereas paclitaxel (Taxol) stabilizes microtubules and suppresses normal dynamics. Both can disrupt mitosis, but they do not act by the same primary mechanism.
Correct Answer
AOne that prevents microtubule assembly
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