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Home Biochemistry Protein Synthesis Comments

  • Question
  • The anticodon of tRNA


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

  • Correct Answer
  • binds to an mRNA codon 


  • Protein Synthesis problems


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    • 1. Which of the following is not a necessary component of translation?

    • Options
    • A. Anticodon
    • B. mRNA
    • C. Ligase
    • D. Amino acid
    • Discuss
    • 2. Which of the following is not necessary for protein synthesis to occur, once transcription is completed?

    • Options
    • A. tRNA
    • B. Ribosomes
    • C. mRNA
    • D. DNA
    • Discuss
    • 3. The site on a bacterial chromosome that marks the termination point for chromosome replication is called

    • Options
    • A. ter
    • B. a stop codon.
    • C. a stem-loop
    • D. pau
    • Discuss
    • 4. The ribosomes are composed of

    • Options
    • A. proteins
    • B. RNA
    • C. both (a) and (b)
    • D. lipids
    • Discuss
    • 5. How many bases of nucleic acid determine a single amino acid?

    • Options
    • A. Four
    • B. One
    • C. Two
    • D. Three
    • Discuss
    • 6. Translation in prokaryotes begins by the formation of a 30S initiation complex between the

    • Options
    • 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
    • Discuss
    • 7. The pathway of a tRNA during polypeptide elongation on the ribosome is

    • Options
    • A. A site ? P site ? E site
    • B. P site ? entry site ? exit site
    • C. A site ? P site ? entry site
    • D. P site ? A site ? E site
    • Discuss
    • 8. Proteins contain __________ different amino acids, whereas DNA and RNA are composed of __________ different nucleotides

    • Options
    • A. 20,64
    • B. 3,20
    • C. 4,20
    • D. 20,4
    • Discuss
    • 9. The first step in translation is

    • Options
    • A. binding of the two ribosomal subunits to each other
    • B. binding of mRNA to the two ribosomal subunits
    • C. binding of tRNA to the small ribosomal subunit
    • D. binding of mRNA to the small ribosomal subunit
    • Discuss
    • 10. Which of the following RNAs bind to an amino acid?

    • Options
    • A. mRNA
    • B. tRNA
    • C. rRNA
    • D. hnRNA
    • Discuss


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