

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 | |