Machine-translated by Google. Questions are authored in English.
Top

Discussion

Microtubules are built from

  • A.coiled rods made of keratin protein
  • B.long chains of the motor protein myosin
  • C.dimers of alpha and beta tubulin
  • D.monomers of the globular protein actin

Answer: C

The dimers stack into thirteen protofilaments arranged as a hollow tube some twenty-five nanometres across. Their hollow construction gives great stiffness for the quantity of protein used, which is why they can serve as compression-bearing struts within the cell.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.