Microtubules Are Assembled from
A) $\alpha$ -Tubulin Dimers $\beta$ -Tubulin Dimers $\alpha$ -Tubulin Dimers And

Multiple Choice

Microtubules are assembled from

A) $\alpha$ -tubulin dimers.
B) $\beta$ -tubulin dimers.
C) alternating $\alpha$ -tubulin dimers and $\beta$ -tubulin dimers.
D) dimers of $\alpha$ - and $\beta$ -tubulin.