MCQOPTIONS
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MCQOPTIONS
This section includes 6 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 enzyme s gene expression is slowed by insulin? |
| A. | Hexokinase II |
| B. | Hexokinase IV |
| C. | PEP carboxykinase |
| D. | Pyruvate kinase |
| Answer» D. Pyruvate kinase | |
| 2. |
Glucose 6-phosphatase is present only in ___________ |
| A. | Liver |
| B. | Muscle |
| C. | Epithelial tissues |
| D. | Kidneys |
| Answer» B. Muscle | |
| 3. |
Glucagon is released from ___________ |
| A. | Muscle |
| B. | Pancreas |
| C. | Kidneys |
| D. | Epithelial tissues |
| Answer» C. Kidneys | |
| 4. |
Glycogen synthase a is activated by ___________ |
| A. | Phosphorylation catalyzed by GSK3 |
| B. | Dephosphorylation catalyzed by GSK3 |
| C. | Phosphorylation catalyzed by pyruvate kinase |
| D. | Phosphorylation catalyzed by pyruvate carboxylase |
| Answer» B. Dephosphorylation catalyzed by GSK3 | |
| 5. |
Which compounds are responsible for the coordinated regulation of glucose and glycogen metabolism? |
| A. | NADH |
| B. | NAD<sup>+</sup> |
| C. | Acetyl co-A |
| D. | Fructose 2, 6-bisphosphate |
| Answer» E. | |
| 6. |
Glucagon and epinephrine stimulate glycogen breakdown to glucose 6-phosphate ________ |
| A. | Directly by binding to glycogen phosphorylase |
| B. | Indirectly by first stimulating adenylate cyclase to make cAMP |
| C. | Only in the liver |
| D. | Only in muscle cells |
| Answer» C. Only in the liver | |