To which end of microtubules are tubulin subunits primarily added in vitro?
A)the minus end
B)the N-terminal end
C)the plus end
D)the C-terminal end
E)the 5'-end

Question

Quizplus · Accepted Answer

In vitro, tubulin subunits are primarily added to the plus end of microtubules. This is because the plus end has a higher affinity for tubulin subunits than the minus end, and also because the plus end is often more accessible for binding than the minus end.

To Which End of Microtubules Are Tubulin Subunits Primarily Added