Question

what is an advantage of using cell culture rather than bacterial culture to produce biological molecules?
cell culture can be used to produce fat - soluble vitamins.
cell culture can be used to produce steroid hormones.
cell culture can be used to produce clones.
cell culture can be used to produce complex proteins.

Explanation:

Bacterial cells lack the machinery (like post - translational modification systems) to produce complex proteins (e.g., with correct folding, glycosylation). Eukaryotic cell cultures (used in cell culture) can perform these modifications, so an advantage of cell culture over bacterial culture is producing complex proteins. Fat - soluble vitamins and steroid hormones are not unique advantages of cell culture over bacterial culture for molecule production, and producing clones is not the main advantage for biological molecule production.

Answer:

D. Cell culture can be used to produce complex proteins.