medical MCQs – Page 175

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 Review each marked answer and report any item that may be outdated or unclear.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

3481. Which of the following is correct_______________?
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A. In ortho keratinisation the superficial cells lose their nuclei, but stratum granulosum is present

B. Non-keratinized epithelium is characterized by absence of stratum granulosum and stratum corneum, The surface cells are nucleated

C. Parakeratinished epithelium is characterized by superficial cells with pyknotic nuclei and absence of stratum granulosum

D. All of the above

3482. A example of a preventive antioxidant is_______________?
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A. Urate

B. Superoxide dismutase

C. Catalase

D. Tocopherol

3483. Enzymes concerned with the citric acid cycle are found in the____________?
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A. Nonparticulate cytoplasm

B. Ribosomes

C. Nucleus

D. Mitochondria

3484. Dehydrogenase used as coenzymes all of the following, except________________?
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A. FMN

B. NADP+

C. Ferro protoporphyrin

D. FAD

3485. Which of the following statement is false______________?
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A. None of the above

B. Resorption of roots of deciduous incisors and canines begins on their lingual surfaces

C. Shedding of deciduous teeth is delayed in the absence of their successor teeth

D. Resorption of roots of deciduous molars begins on their inner surfaces

3486. Krebs cycle does not occur in______________?
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A. RBC

B. Muscle

C. Heart

D. All of the above

3487. Which of them is multienzyme complex_____________?
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A. Pyruvate dehydrogenase

B. Alpha ketoglutarate dehydrogenase

C. Succinate dehydrogenase

D. Enolase

E. Both A & B

3488. Ameloblasts is______________?
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A. Pertaining to dentin

B. A tissue from which tooth erupts

C. A tumour of the jaw

D. A cell from which tooth enamel is formed:

3489. Which of the following statement is correct_________________?
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A. The bodies of rods are near occlusal and incisal surfaces, where as the tails point cervically

B. In cross sections enamel rods appear hexagonal and resembles fish scales

C. All of the above

D. The apatite crystals are parallel to bodies and deviate 65 from the tails

3490. Dietary fibre is rich in_____________?
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A. Starch

B. Cellulose

C. Collagen

D. Inulin

3491. The maximum rate of eruption, as the tooth cusps reach the surface epithelium is around ________ ?m/day?
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A. 25

B. 75

C. 100

D. 50

3492. In mycocarrdial infarction the first enzyme to rise____________?
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A. CPK

B. Amylase

C. SGOT

D. LDH

3493. The main pathways of metabolism in brain are______________?
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A. Glycogenolysis and Gluconeogenesis

B. Glycogenolysis and Citric and cycle

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

D. Glycolysis and citric acid cycle

3494. Which of the following is NOT a characteristic feature of allosteric enzymes ?
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A. They are multienzyme complex

B. Presence of Modulator site

C. Follow Michaelis-Menton Kinetics

D. Give sigmoid shaped curve

3495. Non acidic, nonionic protein which helps in enamel mineralization _______________?
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A. Amelogenin

B. Tuftelin

C. Enamelin

D. Sheathlin

3496. Insulin increase the following pathways in liver EXCEPT____________?
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A. Glycogen synthesis

B. Glucose synthesis

C. Protein syntehsis

D. Fatty acid synthesis

3497. In TCA, substrate level phospherylation takes place in______________?
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A. Alpha ketoglutrate to succinyl CoA

B. Oxalocetate to citrate

C. Succinate to fumarate

D. Succinyl CoA to Succinate

3498. narled enamel is seen in_____________?
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A. All of the above

B. Cusp tips of tooth

C. Proximal surface of tooth

D. Cervical region of tooth

3499. The deficiency of thiamine can be identified by measuring the red cell______________?
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A. Pyruvate dehydrogenase

B. Alpha ketoglutarate dehydrogenase

C. Transaldolase

D. Transketaolase

3500. In TCA cycle or tricarboxylic acid cycle, which is first formed________________?
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A. Succinate

B. Isocitrate

C. Citrate

D. Fumarate

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