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Tutorial Comprehension Quiz
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After you've completed the tutorial, click the button below to answer questions about what you've learned.
Tutorial Comprehension Quiz
Question 1 of 7
Question
Which type of bond is formed, and where, in the process of translation?
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Incorrect.
Question
In which ribosome site(s) is an amino acid bound to its corresponding tRNA?
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Incorrect.
Question
Below are some events that occur in the process of translating mRNA into a protein in a bacterial cell. Select the answer that best represents the order in which they occur.
1. EF-G–GTP binds to the tRNA in the A site and causes the tRNA to advance to the P site. 2. The rRNA in the ribosomal 30S subunit base-pairs with the Shine-Dalgarno sequence in the mRNA. 3. Peptide bond forms between the growing amino acid chain in the P site and the new amino acid in the A site. 4. IF-3 binds in the E site. 5. RRF binds in the A site. 6. RF-1 or -2 binds in the A site. 7. Ribosomal complex dissociates. 8. Peptide chain dissociates from final tRNA. 9. fMET tRNA binds to the start codon in the mRNA. 10. RF-3–GTP causes displacement of RF-1 or -2 and its exit from the ribosome. 11. EF-G–GTP binds to the A site and causes RRF to shift to the P site. 12. A conformational change in the 30S subunit allows the 50S subunit to bind, forming the 70S ribosome.
Correct.
Incorrect.
Question
Below are some events that occur in the process of translating mRNA into a protein in a bacterial cell. Which events require an input of energy?
1. EF-G–GTP binds to the tRNA in the A site and causes the tRNA to advance to the P site. 2. The rRNA in the ribosomal 30S subunit base-pairs with the Shine-Dalgarno sequence in the mRNA. 3. Peptide bond forms between the growing amino acid chain in the P site and the new amino acid in the A site. 4. IF-3 binds in the E site. 5. RRF binds in the A site. 6. RF-1 or -2 binds in the A site. 7. Ribosomal complex dissociates. 8. Peptide chain dissociates from final tRNA. 9. fMET tRNA binds to the start codon in the mRNA. 10. RF-3–GTP causes displacement of RF-1 or -2 and its exit from the ribosome. 11. EF-G–GTP binds to the A site and causes RRF to shift to the P site. 12. A conformational change in the 30S subunit allows the 50S subunit to bind, forming the 70S ribosome.
Correct.
Incorrect.
Question
To terminate translation, a special tRNA recognizes the stop codon of the mRNA and binds in the A site of the ribosome.
Correct.
Incorrect.
Question
What must be bound to the small subunit of the ribosome in order for it to bind to the start codon of the mRNA molecule?
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Incorrect.
Question
Which initiation factor is responsible for recycling ribosomes?