Which of the following is true about dynamic instability of a microtubule end?
A. Each end of a microtubule undergoes dynamic instability at the same time in a cell.
B. GDP in the tubulin dimers at the plus end is phosphorylated to become GTP.
C. The presence of GDP-tubulin at the plus end of the microtubule causes depolymerization.
D. During a growth phase, GTP in the tubulin dimer is hydrolyzed as soon as the dimer is incornorated into the microtubule
Ans: B. GDP in the tubulin dimers at the plus end is phosphorylated to become GTP.
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