Biochemistry - Protein Synthesis

Exercise :: Protein Synthesis - Section 1

  • Protein Synthesis - Section 1
21. 

Translation in prokaryotes begins by the formation of a 30S initiation complex between the

A. 30S ribosomal subunit, mRNA, initiation factors and N-fMet tRNA
B. 30S ribosomal subunit, tRNA and initiation factors
C. 30S ribosomal subunit and mRNA only
D. 30S ribosomal subunit, mRNA and initiation factors

Answer: Option A

Explanation:

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22. 

The anticodon of tRNA

A. binds to rRNA
B. binds to an amino acid
C. binds to the Shine Dalgarno sequence
D. binds to an mRNA codon

Answer: Option D

Explanation:

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23. 

The peptidyl transferase reaction occurs

A. on the large subunit
B. on the small subunit
C. between the subunit
D. none of these

Answer: Option A

Explanation:

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24. 

Processive synthesis is a characteristic feature of

A. all DNA polymerases.
B. DNA Pol III at a replication fork.
C. removal of RNA primers on Okasaki fragments.
D. DNA mismatch repair

Answer: Option B

Explanation:

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25. 

Which site of the tRNA molecule binds to the mRNA molecule?

A. Anticodon
B. Codon
C. Amino acid
D. 5 prime end

Answer: Option A

Explanation:

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