medical MCQs – Page 374

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

7461. The deficiency of thiamine can be identified by measuring the red cell______________?
0

A. Alpha ketoglutarate dehydrogenase

B. Transketaolase

C. Transaldolase

D. Pyruvate dehydrogenase

7462. The citric acid cycle is the final pathway for oxidation of______________?
0

A. Enzymes

B. None of the above

C. Minerals

D. Vitamins

7463. The immediate precursor of norepinephrine is______________?
0

A. Tyrosine

B. Phenylalanine

C. Epinephrine

D. Dopamine

7464. The enzyme that splits hydrogen peroxide into water and oxygen is_____________?
0

A. Cytochrome P 450

B. Cytochromes

C. Super oxide dismutase

D. Catalase

7465. Which of the following is a membrane bound enzyme that catalyzes the formation of cyclic AMP from ATP ?
0

A. Tyrosine kinase

B. Adenylate cyclase

C. Polymerase

D. ATP synthase

7466. 1 molelcule of glucose forms _______ molecules of pyruvate?
0

A. 4

B. 1

C. 3

D. 2

7467. Biotin is required for the activity of_____________?
0

A. Phosphohexose isomerase

B. Pyruvate carboxylase

C. Succinate thiokinase

D. Lactate dehydrogenase

7468. The main pathways of metabolism in brain are______________?
0

A. Glycolysis and citric acid cycle

B. Embden-Meyerhof Pathway and H.M.P shunt

C. Glycogenolysis and Gluconeogenesis

D. Glycogenolysis and Citric and cycle

7469. The main site of fluoride inhibition in the Embden Meyerhof pathway of acid____________?
0

A. Pyruvate Kinase

B. ATPase

C. Enolase

D. Fructose 6 phosphatase

7470. Enzymes involved in degradation of epinephrine_____________?
0

A. Oxidases

B. Anticholinesterases

C. Cholinesterase

D. Catechol 0-transferase

7471. Calcitonin is antagonist_______________?
0

A. Thyroxine

B. Parathyroid hormone

C. Serotonin

D. Triidothyronine

7472. In which type of glycogen storage disease is hyper uricemia a feature ?
0

A. II

B. III

C. IV

D. I

7473. Which of the following is NOT a characteristic feature of allosteric enzymes ?
0

A. Give sigmoid shaped curve

B. Presence of Modulator site

C. Follow Michaelis-Menton Kinetics

D. They are multienzyme complex

7474. NADPH is generated by the action of____________?
0

A. Glucose 1 phosphate dehydrogenase

B. Glucose 1,6 diphosphate dehydrogenase

C. Glucose 6 phosphate dehydrogenase

D. All of the above

7475. Lactate dehydrogenase is____________?
0

A. Zymogen

B. Isozyme

C. Coenzyme

D. Antienzyme

7476. Ribosomes are usually associated with______________?
0

A. Nucleolus

B. Mitochondria

C. Plasma membrane

D. Endoplasmic reticulum

7477. Muscle glycogen cannot contribute directly to blood glucose level because___________?
0

A. Absence of glucokinase

B. Muscle does not contain glycogen phosphorylase

C. Muscle lacks glucose 6 phosphatase

D. Muscle lacks phospho gluco isomerase

7478. Normal blood PH is______________?
0

A. 7.7 8.0

B. 7.0 7.12

C. 6.8 7.0

D. 7.38 7.4

7479. HMP shunt is of great importance in cellular metabolism because its produces_____________?
0

A. NADPH

B. Acetyl CoA

C. ATP

D. ADP

7480. The precursor of testosterone is_____________?
0

A. Methyl testosterone

B. Pregnenolone

C. Estrogen

D. Aldosterone

Previous Next

Showing 7461 to 7480 of 10266 mcqs