Protein Synthesis

Which of the following components is essential for translation?

• Spliceosome

• Ribosome

• DNA polymerase

• RNA polymerase

tRNAs adapt specific triplet codons in mRNA to what?

• rRNAs

• Other codons

• Correct amino acids

• Exons

Which part of the tRNA binds to the mRNA codon during translation?

• Acceptor stem

• D-loop

• Anticodon loop

• Variable loop

The enzyme responsible for attaching amino acids to their corresponding tRNAs is called:

• Peptidyl transferase

• Aminoacyl tRNA synthetase

• DNA ligase

• Topoisomerase

How many different types of aminoacyl tRNA synthetases exist in most organisms?

• 64

• 30-55

• 20

• 12

Which site on the ribosome does the first charged tRNA bind during initiation?

• E site

• P site

• A site

• Exit tunnel

What is the start codon for translation?

• UGA

• UAC

• AUG

• AAA

During elongation, which site on the ribosome does the new tRNA enter?

• P site

• Exit tunnel

• A site

• D-loop

What energy source drives elongation during translation?

• ATP

• NADH

• GTP

• FAD

Which of the following codons signals termination of translation?

• AUG

• GGU

• UAA

• UAC