medical MCQs – Page 174

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 Review each marked answer and report any item that may be outdated or unclear.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

3461. Which one of the following enzymes provides a link between glycolysis and the citric acid cycle ?
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A. Citrate synthase

B. Pyruvate dehydrogenase

C. Pyruvate kinase

D. Lactate dehydrogenase

3462. The tissue with the highest glycogen content (mg/100gm)_____________?
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A. Kidneys

B. Muscle

C. Testes

D. Liver

3463. Keratohyaline granules are more evident in_______________?
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A. Non keratinized

B. Orthokeratinized

C. Keratinised

D. Parakeratinised

3464. A suitable fixative for a routine biopsy specimen is_____________?
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A. 40% formalin

B. 10% formalin

C. 10% alcohol

D. 20% formalin

3465. Extracted teeth should be preserved in_____________?
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A. Saline

B. Xylene

C. 10% Formalin

D. 10% alcohol

3466. The connective tissue of the gingiva is known as the______________?
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A. Fibroblasts

B. Lamina dura

C. Lamina propria

D. Dental cuticle

3467. Glucose can be synthesized from all except_____________?
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A. Acetoacetate

B. Amino acids

C. Glycerol

D. Lactic acid

3468. Michaelis-Menten hypothesis states that_____________?
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A. Km is the enzyme substrate complex association constant

B. Rate of non enzymatic reaction is proportional to substrate concentration

C. Rate of enzymatic reaction is independent of substrate concentration

D. Enzyme- substrate complex formation is essential in enzymatic reaction

3469. The deciduous teeth can be differentiated from permanent teeth by_____________?
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A. Dentinal tubule arrangement

B. Primary and secondary dentin

C. Mineral content

D. Enamel prismatic arrangement

3470. Krebs cycle occurs in _________ conditions?
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A. Aerobic and anaerobic

B. Microaerophilic

C. Aerobic

D. Anaerobic

3471. Maximum amount of phosphate is seen in_______________?
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A. Dentin

B. Gingiva

C. Bone

D. Enamel

3472. Which of the following is correct about enamel crystals ?
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A. Roughly texagonal in shape

B. Their diameter is about 5 microns in size

C. Contains organic portion in the center

D. Same as dentin crystals

3473. Protein making up the bulk of keratohyaline granules in stratum granulosum of keratinized epithelium is______________?
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A. Involucrin

B. Filaggrin

C. Vinculin

D. Nectin

3474. Epithelium of oral mucous membrane is_______________?
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A. Only para keratinized

B. Keratinized

C. Ortho, para and non keratinized

D. Non keratinized

3475. Which of the following is not a polymer of glucose?
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A. Cellulose

B. Amylase

C. Glycogen

D. Inulin

3476. One molecule of acetyl Co-A gives rise to ________ ATP molecules?
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A. 32

B. 8

C. 12

D. 2

3477. In prolonged starvation the main nergy source of brain is_____________?
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A. Fatty acids

B. Glucose

C. Fructose

D. Ketone bodies

3478. The enzyme that is specifically increased in obstructive jaundice is_____________?
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A. Acid phosphatase

B. Alkaline phosphaase

C. Glutamate oxaloacetate transaminase

D. Glutamate pyruvate transaminase

3479. Color of the normal gingiva is_____________?
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A. Pink

B. Coral pink

C. None of the above

D. Red

3480. Non keratinized epithelium is found over___________?
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A. Attached gingiva

B. Free gingiva

C. Interdental papilla

D. Gingival sulcus

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