In a paramecium, cell surface integral membrane proteins are synthesized
A) in the cytoplasm by free ribosomes.
B) by ribosomes in the nucleus.
C) by ribosomes bound to the rough endoplasmic reticulum.
D) by ribosomes in the Golgi vesicles.
E) by ribosomes bound to the inner surface of the plasma membrane.

Question

Quizplus · Accepted Answer

Integral membrane proteins are synthesized by ribosomes bound to the rough endoplasmic reticulum (RER), where they are inserted into the membrane or secreted into the lumen of the RER.

In a Paramecium, Cell Surface Integral Membrane Proteins Are Synthesized