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Home Biochemistry Structure and Properties of Peptides See What Others Are Saying!
  • Question
  • What was the first protein whose complete tertiary structure was determined?


  • Options
  • A. Lysozyme
  • B. Myoglobin
  • C. Pancreatic ribonuclease
  • D. Pancreatic DNase

  • Correct Answer
  • Myoglobin 


  • More questions

    • 1. Enhancers differ from promoters in that

    • Options
    • A. they initiate transcription
    • B. they are adjacent to the start codon
    • C. their orientation can be inverted without effect
    • D. they are restricted to a specific gene
    • Discuss
    • 2. Different DNA polymerases play distinct roles in DNA replication and repair in both prokaryotic and eukaryotic cells. All known DNA polymerases synthesize DNA only in the __________ by the addition of dNTPs to a performed primer strand of DNA.

    • Options
    • A. positive direction
    • B. 3' to 5' direction
    • C. 5' to 3' direction
    • D. negative direction
    • Discuss
    • 3. Klenow fragment without free nucleotides exhibits

    • Options
    • A. exonuclease activity
    • B. endonuclease activity
    • C. nickase activity
    • D. no activity
    • Discuss
    • 4. The Hill coefficient (nH) for myoglobin and hemoglobin are respectively

    • Options
    • A. 2.8 and 1.0
    • B. 1.0 and 2.8
    • C. 1.2 and 4.5
    • D. 4.5 and 1.2
    • Discuss
    • 5. Self-phosphorylation is an excellent mechanism for triggering specific catalytic function of the proteins involved in signal cascades because it

    • Options
    • A. changes the shape and thus the enzymatic activity of the proteins involved
    • B. makes the receptor more likely to capture the signaling, molecule
    • C. allows hydrophilic signaling molecules to cross the plasma membrane
    • D. None of the above
    • Discuss
    • 6. Which of the following ion is required for the development of sound teeth with resistance to tooth decay?

    • Options
    • A. Fluoride ion
    • B. Sodium ion
    • C. Chloride ion
    • D. Magnesium ion
    • Discuss
    • 7. The first intermediate in TCA cycle is

    • Options
    • A. succinate
    • B. fumerate
    • C. citrate
    • D. malate
    • Discuss
    • 8. Which of the following is not a significant biological oxidizing agent?

    • Options
    • A. FAD
    • B. Fe3+
    • C. O2
    • D. NAD+
    • Discuss
    • 9. What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?

    • Options
    • A. B
    • B. H
    • C. S
    • D. None of these
    • Discuss
    • 10. The production or break down of __________ is often coupled with the metabolic reactions of biosynthesis and catabolism.

    • Options
    • A. aspirin
    • B. DNA
    • C. ATP
    • D. CO2
    • Discuss


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