Cells that perform little protein synthesis but are involved with protein modification typically have large numbers or amounts of
A) RER.
B) mitochondria.
C) ribosomes.
D) SER.
E) lysosomes.

Question

Quizplus · Accepted Answer

SER (smooth endoplasmic reticulum) is responsible for protein modification, including the addition of carbohydrate chains to proteins. It contains enzymes such as glycosyltransferases and phospholipases, which help modify proteins and lipids. It does not have ribosomes associated with it, unlike the RER (rough endoplasmic reticulum), which is the site of protein synthesis. Mitochondria are responsible for energy production and do not play a role in protein modification. Lysosomes contain hydrolytic enzymes and are involved in breaking down cellular waste, so they are not directly involved in protein modification either.

Cells That Perform Little Protein Synthesis but Are Involved with Protein