Which of these types of proteins would be made on free ribosomes in the cytosol?
a) a protein that will be secreted, like an antibody
b) a protein that will be inserted in a membrane, like a receptor
c) a protein that functions in the nucleus, like a transcription factor
d) a protein that functions in the endomembrane system, like a lysosomal enzyme
e) none of these
Answer: C