Question

54) Which of the following statements about the cytoskeleton is true?

A) The dynamic aspect of cytoskeletal function is made possible by the assembly and

disassembly of a large number of complex proteins into larger 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) Chemicals that block the assembly of the cytoskeleton would cause little effect on the cell's metabolism

E) Transport vesicles among the membranes of the endomembrane system produce the

cytoskeleton.

Answer 1

The true statement about the cytoskeleton is that the movement of cilia and flagella is due to motor proteins moving microtubules relative to each other. This complex system provides structure and movement within the cell.

Therefore the correct answer is option is C) Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other.

Step-by-step explanation:

The correct statement about the cytoskeleton is C) Movement of cilia and flagella is the result of motor proteins causing microtubules to move relative to each other. The cytoskeleton is a dynamic network of fibers that includes microfilaments, microtubules, and intermediate filaments. These structures play crucial roles in cell movement, maintaining cell shape, intracellular transport, and cellular division.

Microtubules are composed of tubulin proteins and are dynamic elements of the cytoskeleton that can rapidly assemble and disassemble. They aid in resisting compression, serving as tracks for motor proteins, and forming the structures of centrioles, flagella, and cilia. Microfilaments, primarily composed of actin, also interact with motor proteins and provide structural support, enabling cellular movements such as muscle contraction.