medical MCQs – Page 375

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 Review each marked answer and report any item that may be outdated or unclear.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

7481. In glycolysis ATP is produced by the following enzyme______________?
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A. Hexokinase

B. Phosphoglycerate kinase

C. Phosphohexose isomerase

D. Enolase

7482. Enzyme + coenzyme constitutes_____________?
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A. Protoenzyme

B. Apoenzyme

C. Holoenzyme

D. Proenzyme

7483. Normal blood bilirubin level is______________?
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A. 0.5 1 mg%

B. 4 5.5 mg%

C. 1 3 mg%

D. 3 4 mg%

7484. Acetyl Co-A acts as a substrate for all the enzymes except______________?
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A. Malonyl CoA synthetase

B. HMG-Co A synthase

C. Fatty acid synthetase

D. Malic enzyme

7485. Which of the following is false about starvation ketoacidosis ?
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A. Smell of acetone in breath

B. Metabolic acidosis

C. Rotheras test is +ve

D. Benedicts test +ve

7486. The combination of main supporting enzyme is called______________?
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A. Apoenzyme

B. Coenzyme

C. Constitutive enzyme

D. Holoenzyme

7487. Which of the following about biological membrane is true ?
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A. Lipid moiety is amphipathic

B. Symmertrical bi leaflet structures

C. Rigid assembly of protein, lipid and carbohydrate

D. Lipid and protein moiety are held by covalent interactions

7488. The first product of glycogenolysis is_____________?
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A. Glucose 6 phosphatase

B. Glucose 1,6 diphosphatase

C. Glucose 1- phosphatase

D. Fructose 1- phosphatase

7489. In TCA cycle or tricarboxylic acid cycle, which is first formed________________?
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A. Citrate

B. Succinate

C. Fumarate

D. Isocitrate

7490. The monsaccharide glucose is best described by which one of the following statements ?
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A. It is a ketose

B. It possessesan anomeric C-2 carbon atom

C. It usually exists in the furanose form

D. It formspart of the disaccharide sucrose

7491. Insulin increase the following pathways in liver EXCEPT____________?
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A. Protein syntehsis

B. Fatty acid synthesis

C. Glucose synthesis

D. Glycogen synthesis

7492. LDH has following number oflsoenzymes________________?
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A. 3

B. 11

C. 2

D. 5

7493. In Cytochrome p450, P stands for____________?
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A. Substrate protiens

B. Pigment

C. Structural proteins

D. Polymer

7494. Blood glucose level cannot be augmented by mobilization of muscle glycogen due to lack of_____________?
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A. G-6-P dehydrogenase

B. Glucokinase

C. G-6-P phydrogenase

D. Aldolase

7495. What high energy phosphate compound is formed in the citric acid cycle through substrate level phosphorylation______________?
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A. TTP

B. ATP

C. GTP

D. ITP

7496. Elevated levels of serum glutamic oxaloacetic transaminase in indicative of______________?
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A. Deficiency of glutamic acid

B. Liver disease

C. Deficiency of oxaloacetic acid

D. All of the above

7497. Bilirubin is produced from________________?
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A. Haemoglobin

B. Gall bladder

C. Myoglobin

D. A & B

7498. Which of the following is inclusion of cytoplasm ?
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A. Endoplasmic reticulum

B. Golgi body

C. Ribosome

D. Glycogen

7499. The most abundant protein present in body is_____________?
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A. Albumin

B. Collagen

C. Globulin

D. Hemoglobin

7500. Which of the following combination is correct ?
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A. Thiamine Acyl CoA

B. All of the above

C. Biotin-CO2

D. ATP-Hydrogen

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