Fact 1: Molecules of tRNA bring amino acids to the ribosome in the correct sequence.

Fact 2: Ribosomes are sites of protein synthesis.

Given the two facts above, answer the question "Molecules of _ initiate protein synthesis" with the following options: 
- Acids
 - nektar
 - sugar
 - tRNA
 - H 2 O
 - three
 - CO 2
 - HIV


 

    tRNA     