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- Question
Non-competitive inhibitor of an enzyme catalyzed reaction
Options- A. decreases Vmax
- B. binds to Michaelis complex (ES)
- C. both (a) and (b)
- D. can actually increase reaction velocity in rare cases
- Correct Answer
- both (a) and (b)
- 1. Which of these enzymes contains a Zinc (Zn) ion?
Options- A. Carboxypeptidase A
- B. Phosphorylase B kinase
- C. Tyrosine hydroxylase
- D. Phosphodiesterase Discuss
- 2. Which graphical method is used to determine an enzyme degree of cooperativity?
Options- A. Hill plot
- B. Koshland curve
- C. Michaelis-Menten hyperbola
- D. Can not be determined Discuss
- 3. The enzyme inhibition can occur by
Options- A. reversible inhibitors
- B. irreversible inhibitors
- C. Both (a) and (b)
- D. None of these Discuss
- 4. In a Lineweaver-Burk Plot, competitive inhibitor shows which of the following effect?
Options- A. It moves the entire curve to right
- B. It moves the entire curve to left
- C. It changes the x-intercept
- D. It has no effect on the slope Discuss
- 5. The active site of an enzyme remains
Options- A. at the center of globular proteins
- B. rigid and does not change shape
- C. complementary to the rest of the molecule
- D. none of the above Discuss
- 6. The effect of non-competitive inhibition on a Lineweaver-Burk Plot is that
Options- A. it can move the entire curve to the right
- B. it can change the y-intercept
- C. it can change the x-intercept
- D. all of these Discuss
- 7. Which category of enzymes belongs to class two in the international classification?
Options- A. Hydrolases
- B. Ligases
- C. Transferases
- D. Isomerase Discuss
- 8. Given an enzyme with a Km = 10m M and Vmax = 100 m mol/min. If [S] = 100 m M, which of the following will be true?
Options- A. A 10 fold increase in Vmax would increase velocity 10 fold y
- B. A 10 fold decrease in Km would increase velocity
- C. Both (a) and (b)
- D. A 10 fold increase in Vmax would decrease velocity 20 fold Discuss
- 9. Lysozyme
Options- A. catalyses hydrolysis of ?-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan
- B. catalyses hydrolysis of ?-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan
- C. catalyses hydrolysis of ?-1-4 linkages between N-diacetyl muranic acid and N-diacetyl glucosamine in peptideoglycan
- D. all of the above Discuss
- 10. The reduction in off flavour of beer is practiced through
Options- A. hersperidinase
- B. rnase
- C. invertase
- D. diacetyl reductase Discuss
Enzymes and Kinetics problems
Search Results
Correct Answer: Carboxypeptidase A
Correct Answer: Hill plot
Correct Answer: Both (a) and (b)
Correct Answer: It changes the x-intercept
Correct Answer: none of the above
Correct Answer: it can change the y-intercept
Correct Answer: Transferases
Correct Answer: A 10 fold increase in Vmax would increase velocity 10 fold y
Correct Answer: catalyses hydrolysis of ?-1-4 linkages between N-acetyl muranic acid and N-acetyl glucosamine in peptideoglycan
Correct Answer: diacetyl reductase
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