Question

please put the events of translation in order, starting with the first event at the top of the list.

instructions

the second trna shifts to the p site while the third trna enters the a site.

a peptide bond forms between the amino acids.

two trna molecules bring amino acids to the ribosome.

the mrna attaches to the ribosome.

the process repeats with additional trna molecules.

a stop codon is encountered.

the first trna exits at the e site.

Explanation:

Identify the initiation step of translation

The process begins when the mRNA molecule binds to the ribosome.

$$ \text{Step 1: The mRNA attaches to the ribosome.} $$

Determine the initial tRNA binding and peptide bond formation

Next, tRNA molecules carrying amino acids enter the ribosome, and a peptide bond is formed between the adjacent amino acids.

$$
LATEXBLOCK0
$$

Trace the translocation and elongation cycle

The ribosome translocates, shifting the tRNAs through the sites, releasing the empty tRNA, and repeating the cycle.

$$
LATEXBLOCK1
$$

Identify the termination step

The process of translation ends when a stop codon is reached.

$$ \text{Step 7: A stop codon is encountered.} $$

Answer:

1. The mRNA attaches to the ribosome.
2. Two tRNA molecules bring amino acids to the ribosome.
3. A peptide bond forms between the amino acids.
4. The first tRNA exits at the E site.
5. The second tRNA shifts to the P site while the third tRNA enters the A site.
6. The process repeats with additional tRNA molecules.
7. A stop codon is encountered.