Cells that are making proteins at high rates
A) accumulate free ribosomes.
B) accumulate ribosomal subunits.
C) are likely to have a single ribosome associated with mRNA.
D) are likely to have polysomes.
E) make just one copy of a protein from a single mRNA.

Question

Quizplus · Accepted Answer

Cells that are making proteins at high rates are likely to have polysomes, which are multiple ribosomes associated with a single mRNA molecule. This allows for multiple copies of the protein to be made simultaneously, increasing the rate of protein synthesis. Options A, B, and C are not correct because they suggest accumulation or association with only one or a few ribosomes, but high rates of protein synthesis require multiple ribosomes working together. Option E is not correct because it suggests only one copy of the protein is made, but high rates of protein synthesis would likely require multiple copies to be made.

Cells That Are Making Proteins at High Rates