Please explain why you chose your answer. Insulin is a protein secreted by the c
ID: 49830 • Letter: P
Question
Please explain why you chose your answer.
Insulin is a protein secreted by the cells into our blood stream. The Islets of Langerhans cells in
pancreas contain__?
A. Mostly free ribosomes in the cytosol to produce Insulin
B. Mostly bound ribosomes to the endomembrane system and the resulting Insulin marked by signal
peptides
C. Mostly bound ribosomes to the endomembrane system and the resulting Insulin not marked by signal
peptides
D. Mostly free ribosomes in the cytosol that attach a signal peptide to Insulin after translation
Explanation / Answer
D. Mostly free ribosomes in the cytosol that attach a signal peptide to Insulin after translation. After translation on ribosomes in the cytosolic compartment all proteins are processesd. example --- insulin.