Question

a diseased cell is no longer able to produce proteins. which cell structure is most likely malfunctioning?
cell membrane
cytoplasm
ribosome
mitochondrion

Explanation:

Ribosomes are the sites of protein - synthesis in the cell. The cell membrane controls the movement of substances in and out of the cell, the cytoplasm is the jelly - like substance that contains organelles, and the mitochondrion is the powerhouse of the cell that produces energy. Since the cell can't produce proteins, the ribosome is most likely malfunctioning.

Answer:

C. ribosome