Question

which are characteristics of the cytoskeleton? choose all that apply: a it is made up of protein filaments and microtubules. b it allows the cell to move. c it produces proteins. d it stores calcium.

Explanation:

• Option A: The cytoskeleton is composed of protein filaments (like actin filaments) and microtubules, so this is correct.
• Option B: The cytoskeleton is involved in cell movement (e.g., through structures like cilia and flagella which rely on cytoskeletal components), so this is correct.
• Option C: Protein production is done by ribosomes, not the cytoskeleton, so this is incorrect.
• Option D: Calcium storage is a function of the endoplasmic reticulum (especially the smooth ER), not the cytoskeleton, so this is incorrect.

Answer:

A. It is made up of protein filaments and microtubules.
B. It allows the cell to move.