3 stages of translation ( elongation and termination)

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10 Terms

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<p>What enters the A site during elongation?</p>

What enters the A site during elongation?

A tRNA carrying the next amino acid.

<p>A tRNA carrying the next amino acid.</p>
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What allows the tRNA to bind correctly in the A site?

Its anticodon pairing with the mRNA codon.

3
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<p>What bond forms between amino acids during elongation?</p>

What bond forms between amino acids during elongation?

A peptide bond.

<p>A <strong>peptide bond</strong>.</p>
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What happens to the amino acid in the P site tRNA after the peptide bond forms?

It detaches from its tRNA and joins the growing chain.

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How does the ribosome move along the mRNA?

It shifts one codon forward (5’ → 3’) using GTP energy.

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What happens to the tRNA in the P site after ribosome movement?

It moves to the E site and exits the ribosome.

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What triggers termination?

A stop codon (e.g., UGA) entering the A site

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What binds to the stop codon?

A release factor protein.

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What does the release factor do?

Breaks the bond between the last amino acid and its tRNA.

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What happens after the polypeptide is released?

The ribosome subunits separate and the mRNA detaches.