Question

question 4 of 10
what happens next after the ribosome reaches the start codon?
a. peptide bonds between amino acids are broken.
b. the ribosome finds the stop codon.
c. trna molecules attach to codons.
d. the ribosome detaches from the amino acids.

Explanation:

When the ribosome reaches the start codon (AUG), it signals the beginning of translation. The next step is that tRNA molecules (which carry amino acids) attach to the corresponding codons on the mRNA. This is part of the process of building a polypeptide chain.

• Option A is incorrect because peptide bonds are formed (not broken) during translation.
• Option B is incorrect as finding the stop codon happens later in the process (termination), not immediately after reaching the start codon.
• Option D is incorrect as the ribosome does not detach from amino acids at this stage; it is just starting the process of assembling them.

Answer:

C. tRNA molecules attach to codons.