Please answer the following question: 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
A:
tRNA