Question

ser (smooth endoplasmic reticulum) performs functions including

a drug detoxification

b lipid synthesis

c calcium ion storage

d all of the above

Explanation:

The smooth endoplasmic reticulum (SER) has multiple functions. It is involved in drug detoxification by containing enzymes that modify drugs to make them more water - soluble for excretion. It is the main site for lipid synthesis in the cell. It also stores calcium ions, which can be released into the cytoplasm when needed for processes like muscle contraction.

Answer:

D. All of the above