MCQOPTIONS
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MCQOPTIONS
This section includes 58 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Metabolic reactions that break down complex molecules into smaller compounds, thereby releasing usable energy for the cell, are best described as |
| A. | biosynthetic |
| B. | catabolic |
| C. | catalytic |
| D. | photosynthetic |
| Answer» C. catalytic | |
| 52. |
The function of gluconeogenesis is |
| A. | maintenance of blood glucose levels during starvation or a low carbohydrate diet |
| B. | recovery of lactate from fermentation and glycerol from fat breakdown |
| C. | a pathway for the utilization of amino acids |
| D. | all of the above |
| Answer» E. | |
| 53. |
Aldolases splits fructose 1,6 biphosphate into |
| A. | glyceraldehyde 3- phosphate |
| B. | glyceraldehyde 3- phosphate and dihydroxyacetone phosphate |
| C. | dihydroxyacetone phosphate |
| D. | none of the above |
| Answer» C. dihydroxyacetone phosphate | |
| 54. |
Which of the following is not involved in the biosynthesis of DNA? |
| A. | Energy from ATP |
| B. | Mononucleotides |
| C. | Carbonic anhydrase |
| D. | Enzymes |
| Answer» D. Enzymes | |
| 55. |
The production or break down of __________ is often coupled with the metabolic reactions of biosynthesis and catabolism. |
| A. | aspirin |
| B. | DNA |
| C. | ATP |
| D. | CO |
| E. | <sub>2</sub> |
| Answer» D. CO | |
| 56. |
Cellulose fibers resemble with the protein structure in the form of |
| A. | -sheets |
| B. | -helices |
| C. | -turns |
| D. | None of these |
| Answer» B. -helices | |
| 57. |
The ultimate source of energy that sustains living systems is |
| A. | glucose |
| B. | oxygen |
| C. | sunlight |
| D. | carbon dioxide |
| Answer» D. carbon dioxide | |
| 58. |
The process not involved in the formation of glucose by gluconeo-genesis is |
| A. | the conversion of oxaloacetate to glucose |
| B. | the conversion of lactate to pyruvate |
| C. | the dephosphorylation of glucose-6-phosphate |
| D. | all of the above |
| Answer» B. the conversion of lactate to pyruvate | |