Question

what gives the rough endoplasmic reticulum its characteristic appearance compared to the smooth endoplasmic reticulum?
a golgi apparatus
b calcium
c lipids
d ribosomes

Explanation:

The rough endoplasmic reticulum (RER) has a rough appearance because ribosomes are attached to its surface. In contrast, the smooth endoplasmic reticulum (SER) lacks ribosome - bound structures. The Golgi apparatus is involved in modifying, sorting, and packaging proteins and lipids. Calcium is important for various cellular functions but doesn't contribute to the RER's appearance. Lipids are synthesized in the SER, not responsible for the RER's rough look.

Answer:

d. ribosomes