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

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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

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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

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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

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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

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