This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
On the ribosome, mRNA binds 
Select and explain. 
A. between the subunits, B. to the large subunit, C. to the small subunit, D. none of these
C: to the small subunit
Answer: C: to the small subunit 
Explanation: During initiation, the small ribosomal subunit binds to the start of the mRNA sequence.
Then a transfer RNA (tRNA) molecule carrying the amino acid methionine binds to what is called the start codon of the mRNA sequence.