The First Step in Protein Synthesis That Distinguishes a Protein

question 128

Multiple Choice

The first step in protein synthesis that distinguishes a protein to be secreted from one to be retained in the cytoplasm is:

• A) attachment of the ribosome to a membrane.
• B) removal of signal sequences by signal peptidase.
• C) binding of the signal recognition particle to the signal sequence.
• D) binding of the fmet-tRNA to the ribosome.
• E) binding of specialized ribosomes to the mRNA.