Explore topic-wise MCQs in Biochemistry.

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