Question

Please thoroughly explain why each of the answers in correct or incorrect.

Which of the following statements about the cytoskeleton is incorrect?

A. The dynamic aspect of cytoskeletal function is made possible by the assembly and disassembly of a few simple types of proteins into large aggregates.

B. Microfilaments are structurally rigid and resist compression, while microtubules resist tension (stretching).

C. Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other

D. Transport vesicles among the membranes of the endomembrane system depend on the function of the cytoskeleton.

Answer 1

(B)Microfilaments are structurally rigid and resist compression,while microtubules resist tension.(streching)

This is an incorrect statement because microfilaments are flexible and resist buckling whereas microtubules are associated with resisting compression.

(A) is correct as the small proteins such as microtubules and microfilaments assemble together and form large structures.

(C) is correct Motor proteins are the proteins responsible for motility in a cell.They are present in cilia and flagella and cause motion.

(D) is correct because transport vesicle need to combine with the cell membrane in order to transport and as membrane consists of cytoskeleton that is why transport vesicles are associated with cytoskeleton.