Question

multiple choice question
microtubules and microfilaments make up the ______.
o nucleus
o cytoskeleton
o smooth er
o mitochondrion

Explanation:

To solve this, we recall the components of each cell structure:

• The nucleus contains genetic material (DNA) and is not made of microtubules/microfilaments.
• The cytoskeleton is a network of protein filaments (including microtubules and microfilaments) that provides structure and support to the cell.
• Smooth ER is involved in lipid synthesis and detoxification, with no microtubules/microfilaments.
• Mitochondria are for energy production (ATP) and don't consist of these filaments.

So the correct option is the one related to the cytoskeleton.

Answer:

B. cytoskeleton