MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Bioprocess Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
1.5 g of enzyme gives a vmax of 3 mol product produced per minute. What is the turnover number for this enzyme? |
| A. | 100 sec<sup>-1</sup> |
| B. | 200 sec<sup>-1</sup> |
| C. | 1000 sec<sup>-1</sup> |
| D. | 2000 sec<sup>-1</sup> |
| Answer» D. 2000 sec<sup>-1</sup> | |
| 2. |
The concept of induced fit refers to the fact that _______ |
| A. | When a substrate binds to an enzyme, the enzyme induces a loss of water (desolvation) from the substrate |
| B. | Substrate binding may induce a conformational change in the enzyme, which then brings catalytic groups into proper orientation |
| C. | Enzyme-substrate binding induces an increase in the reaction entropy, thereby catalyzing the reaction |
| D. | Enzyme specificity is induced by enzyme-substrate binding |
| Answer» C. Enzyme-substrate binding induces an increase in the reaction entropy, thereby catalyzing the reaction | |
| 3. |
What competes with substrate for active site? |
| A. | Competitive inhibition |
| B. | Uncompetitive inhibition |
| C. | Non-competitive inhibition |
| D. | Pure Non-competitive inhibition |
| Answer» B. Uncompetitive inhibition | |
| 4. |
Which of the following state represents the condition Initial mixing of E+S, while [ES] builds up . |
| A. | Enzyme is saturated with substrate |
| B. | Pre- Steady state |
| C. | Steady state |
| D. | Steady-state kinetics |
| Answer» C. Steady state | |
| 5. |
What is the unit of catalytic efficiency kcat/Km? |
| A. | conc<sup>-1</sup> time<sup>-1</sup> |
| B. | conc time |
| C. | conc<sup>-2</sup>time<sup>-2</sup> |
| D. | conc time-1 |
| Answer» B. conc time | |
| 6. |
Km is directly proportional to the rate of enzyme binding? |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Is vmax affected by enzyme concentration? |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What is the unit of vmax? |
| A. | mmol |
| B. | mol/sec |
| C. | mol |
| D. | mol/hr |
| Answer» C. mol | |
| 9. |
What is the term Km ? |
| A. | Concentration of the enzyme |
| B. | Concentration of the catalyst |
| C. | Concentration of the product |
| D. | Concentration of the substrate |
| Answer» E. | |
| 10. |
Which plot represents the following equation? ( frac{1}{v} = frac{K_m}{v_{max^s}} + frac{1}{v_{max}} ) |
| A. | Line-weaver burk plot |
| B. | Eadie-Hofstee plot |
| C. | Michaelis-menten plot |
| D. | Langmuir plot |
| Answer» D. Langmuir plot | |
| 11. |
Which plot represents the following equation? ( frac{s}{v} = frac{K_m}{v_{max}} + frac{s}{v_{max}} ) |
| A. | Line-weaver burk plot |
| B. | Eadie-Hofstee plot |
| C. | Michaelis-menten plot |
| D. | Langmuir plot |
| Answer» E. | |
| 12. |
Which of the following plot has the difficulty of extrapolating vmax? |
| A. | Line-weaver burk plot |
| B. | Eadie-Hofstee plot |
| C. | Michaelis-menten plot |
| D. | Langmuir plot |
| Answer» D. Langmuir plot | |
| 13. |
Which stage is preferred for the estimation of the rate of enzymatic reaction? |
| A. | Initial |
| B. | Mid |
| C. | Final |
| D. | Stationary |
| Answer» B. Mid | |