medical MCQs – Page 172

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 Review each marked answer and report any item that may be outdated or unclear.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

3421. The position of mucogingival line____________________?
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A. Shifts apically with age

B. Constant throughout the life

C. Shifts coronally with age

D. None of the above

3422. Dehydration of specimen is carried out by____________?
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A. By using 5% nitric acid

B. By using increasing percentages of alcohol

C. By using 10% formalin

D. By using liquid or solid Co2

3423. Interwining of the enamel rods at the cusp timps and the incisal edges of a tooth is called______________?
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A. Incremental lines of retzius

B. Gnarled enamel

C. Incremental lies of woven

D. Enamel spindles

3424. Synthesis of protein occurs on_____________?
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A. Nucleus

B. Golgi bodies

C. Poly ribosomes

D. Mitochondria

3425. The monsaccharide glucose is best described by which one of the following statements ?
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A. It is a ketose

B. It formspart of the disaccharide sucrose

C. It possessesan anomeric C-2 carbon atom

D. It usually exists in the furanose form

3426. In TCA cycle substrate level phosphorylation occurs at____________?
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A. None of the above

B. Succinate dehydrogenase

C. Malonate reduction

D. Thiokinase

3427. The red zones of lips have_____________?
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A. 30% Sebaceous glands

B. very small number of sebaceous glands, if any

C. Absolutely no sebaceous glands

D. 75% sebaceous glands

3428. Supporting cells of taste buds are called as_____________?
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A. Von ebner cells

B. Acini

C. Taste cells

D. Sustenticular cells

3429. During conversion of glycerol to pyruvic acid, the first glycolytic intermediate to form is_______________?
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A. 2- phospho glyceric acid

B. 3- phospho glyceric acid

C. 3- phospho glyceralehyde

D. Dihydroxy acetone phosphate

3430. Biomechanism that unites the epithelium to the tooth surface is_____________?
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A. Epithelial attachment

B. Internal basal lamina

C. Reduced enamel epithelium

D. Junctional epithelium

3431. All of the following is lined by stratified squamous epithelium, except ?
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A. Tongue

B. Roof of the soft palate

C. Lips

D. Oropharynx

3432. The citric acid cycle is the final pathway for oxidation of______________?
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A. Vitamins

B. None of the above

C. Minerals

D. Enzymes

3433. Which one of the following is the correct sequential order in which the given enzymes of krebs cycle are formed after a molecule of acetyl CoA______________?
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A. Citrate, Oxalocetate, Ketoglutarate

B. Oxalocetate, Ketoglutarate, Citrate

C. Ketoglutarate, Oxalocetate, Citrate

D. Citrate, Ketoglutarate, Oxalocetate

3434. A material that speeds up a chemical reaction without chemically becoming involved is called_____________?
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A. A base

B. Thermoplastic

C. A catalyst

D. A solvent

3435. Inactive precursors of enzymes are known as_______________?
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A. Proenzymes

B. Holoenzymes

C. Coenzymes

D. Apoenzymes

3436. 1 molelcule of glucose forms _______ molecules of pyruvate?
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A. 3

B. 2

C. 4

D. 1

3437. Hertwigs root sheath is formed from______________?
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A. Stellate reticulum

B. Cervical loop

C. Stratum inter medium

D. Outer enamel epithelium

3438. HMP shunt is of great importance in cellular metabolism because its produces_____________?
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A. Acetyl CoA

B. ADP

C. NADPH

D. ATP

3439. Which of the following is abnormal constituent of urine_____________?
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A. Urea

B. glucose

C. None of the above

D. Creatine

3440. Hunter Schreger band are____________?
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A. Dark and light bands of dentin seen in horizontal

B. Dark and light bands of enamel seen in horizontal ground section

C. Dark and light brands of dentin seen in longitudinal section

D. Dark and light bands of enamel seen in longitudinal ground section

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