Question

what is the main function of the smooth endoplasmic reticulum in a plant cell?
to break down sugar and release energy that the cell can use

to make lipids

to make proteins

to give strength and stiffness to the cell

Explanation:

• Analyze each option:
• "to break down sugar and release energy that the cell can use" is the function of mitochondria.
• "to make lipids" is a main function of the smooth endoplasmic reticulum (SER).
• "to make proteins" is the function of the rough endoplasmic reticulum (with ribosomes) or ribosomes themselves.
• "to give strength and stiffness to the cell" is the function of the cell wall (in plant cells).

Answer:

B. to make lipids