MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is the most influential in setting the flux through glycolysis? |
| A. | Hexokinase |
| B. | PFK-1 |
| C. | PFK-2 |
| D. | Both hexokinase and PFK-1 |
| Answer» B. PFK-1 | |
| 2. |
Metabolic control analysis does not suggest that ___________ |
| A. | When the blood glucose level rises, insulin acts in muscle to increase glucose transport into cells by bringing GLUT4 to the plasma membrane |
| B. | When the blood glucose level rises, insulin acts in muscle to induce the synthesis of PFK-1 |
| C. | When the blood glucose level rises, insulin acts in muscle to activate glycogen synthase by covalent alteration |
| D. | When the blood glucose level rises, insulin acts in muscle to induce the synthesis of hexokinase |
| Answer» C. When the blood glucose level rises, insulin acts in muscle to activate glycogen synthase by covalent alteration | |
| 3. |
Some regulated enzymes rebalance the level of metabolites in response to the change in flux, this activity is ___________ |
| A. | Regulation |
| B. | Control |
| C. | Metabolism |
| D. | Anabolism |
| Answer» B. Control | |
| 4. |
Some regulated enzymes control the flux through a pathway, this activity is ___________ |
| A. | Regulation |
| B. | Control |
| C. | Metabolism |
| D. | Anabolism |
| Answer» C. Metabolism | |
| 5. |
An expression for the experimentally determined change in flux through a pathway in response to a regulatory hormone or second messenger. |
| A. | Response coefficient |
| B. | Elasticity coefficient |
| C. | Flux control coefficient |
| D. | Metabolic control |
| Answer» B. Elasticity coefficient | |
| 6. |
Which of the following is a measure of the effect of an enzyme s concentration on flux through a multi-enzyme pathway? |
| A. | Response coefficient |
| B. | Elasticity coefficient |
| C. | Flux control coefficient |
| D. | Metabolic control |
| Answer» D. Metabolic control | |
| 7. |
Flux control coefficient measures the ____________ |
| A. | Steady state change |
| B. | pH change |
| C. | Temperature change |
| D. | Hormonal change |
| Answer» B. pH change | |