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Home Biochemistry Protein Synthesis Comments

  • Question
  • The ribosomes are composed of


  • Options
  • A. proteins
  • B. RNA
  • C. both (a) and (b)
  • D. lipids

  • Correct Answer
  • both (a) and (b) 


  • Protein Synthesis problems


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    • 1. How many bases of nucleic acid determine a single amino acid?

    • Options
    • A. Four
    • B. One
    • C. Two
    • D. Three
    • Discuss
    • 2. Which of the following has unusual bases?

    • Options
    • A. mRNA
    • B. tRNA
    • C. rRNA
    • D. hnRNA
    • Discuss
    • 3. The site of protein synthesis is

    • Options
    • A. Ribosome
    • B. Nucleus
    • C. Endoplasmic reticulum
    • D. Chromosome
    • Discuss
    • 4. Degenerated codon differs mostly in

    • Options
    • A. the identities of their second base
    • B. the identities of their third base
    • C. the wobble position
    • D. both (b) and (c)
    • Discuss
    • 5. Which of the following amino acid starts all proteins synthesis?

    • Options
    • A. Glycine
    • B. Proline
    • C. Thymine
    • D. Methionine
    • Discuss
    • 6. 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
    • 7. 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
    • 8. Which of the following is not a necessary component of translation?

    • Options
    • A. Anticodon
    • B. mRNA
    • C. Ligase
    • D. Amino acid
    • Discuss
    • 9. 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
    • Discuss
    • 10. 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


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