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- Question
In the enzyme-catalyzed reaction shown below, what will be the effect on substances A, B, C, and D of inactivating the enzyme labeled E2?
A ---(E1)---> B ---(E2)---> C ---(E3)--->
Options- A. A, B, C, and D will all still be produced
- B. A, B, and C will still be produced, but not D
- C. A and B will still be produced, but not C or D
- D. A will still be produced, but not B, C, or D
- Correct Answer
- A and B will still be produced, but not C or D
- 1. In the normal breakdown of phenylalanine, it is initially degraded to
Options- A. fumarate
- B. tyrosine
- C. lysine
- D. phenylpuruvate Discuss
- 2. Carbon fixation requires the expenditure of ATP molecules which is generated by
Options- A. formation of glucose during the Calvin cycle
- B. replenishment of chlorophyll
- C. ETS (electron transfer system) during the light reactions
- D. none of the above Discuss
- 3. The maximum energy per gram on oxidization is yielded from
Options- A. fat
- B. protein
- C. glycogen
- D. starch Discuss
- 4. Nucleic acids can be analyzed experimentally by their
Options- A. molecular weight
- B. absorption of visible light
- C. absorption of uv light
- D. none of these Discuss
- 5. Protein folding is
Options- A. automatic, mediated by the protein itself
- B. mediated by other proteins called chaperones
- C. mediated by the ribosomes
- D. none of the above Discuss
- 6. Which of the following provide specific defense against viruses and bacteria?
Options- A. T cells
- B. B cells
- C. Complement
- D. inflammation Discuss
- 7. What was the first protein whose complete tertiary structure was determined?
Options- A. Lysozyme
- B. Myoglobin
- C. Pancreatic ribonuclease
- D. Pancreatic DNase Discuss
- 8. Which of the following cell organelles are expected to be associated with motor proteins?
Options- A. Smooth ER
- B. Vesicles
- C. Plasma membrane
- D. Chloroplasts Discuss
- 9. A simple harmonic oscillator may absorb energy
Options- A. at anytime.
- B. when the frequencies match exactly
- C. when the amplitudes are the same.
- D. at no time. Discuss
- 10. Which of the following statements is incorrect?
Options- A. Protein G contains both a-helix and P-sheet
- B. Protein G contains only a-helix
- C. Fatty acid binding protein contains largely P-sheet
- D. Hemoglobin contains four sub-units Discuss
More questions
Correct Answer: tyrosine
Correct Answer: ETS (electron transfer system) during the light reactions
Correct Answer: fat
Correct Answer: absorption of uv light
Correct Answer: mediated by other proteins called chaperones
Correct Answer: B cells
Correct Answer: Myoglobin
Correct Answer: Vesicles
Correct Answer: when the frequencies match exactly
Correct Answer: Protein G contains only a-helix
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