Question

What are the tubulin subunits of microtubules?

1) Alpha and beta tubulin
2) Gamma and delta tubulin
3) Epsilon and zeta tubulin
4) Kappa and lambda tubulin

Answer 1

The microtubules' tubulin subunits are alpha and beta tubulin, which form hollow cylindrical structures playing a crucial role in various cellular functions such as maintaining cell shape and assisting in cell division.

Step-by-step explanation:

The tubulin subunits of microtubules are alpha and beta tubulin. Microtubules are hollow cylinders that form an important part of the eukaryotic cell's cytoskeleton. Their walls consist of 13 polymerized dimers of α-tubulin and β-tubulin, which come together to create the structure of the microtubule. These microtubules play critical roles in maintaining cell shape, facilitating vesicle transport, and segregating chromosomes during cell division. Additionally, they participate in the formation of cilia and flagella, contributing to cell motility.