medical MCQs – Page 199

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 Review each marked answer and report any item that may be outdated or unclear.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

3961. Which of the following are the sources of Vit C_________________?
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A. Apple

B. Fresh green vegetables

C. Citrus fruits

D. Both B and C

3962. The maxillary teeth which have single antagonist are__________?
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A. Permanent central incisors

B. Lateral incisors

C. Third molars

D. Permanent canines

3963. Synthesis of protein occurs on__________________?
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A. Poly ribosomes

B. Golgi bodies

C. Mitochondria

D. Nucleus

3964. Which of the portions of the intra articular disc is the thinnest ?
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A. Intermediate

B. retrodiscal

C. Posterior

D. Anterior

3965. If a permanent first molar is lost, the permanent second molar drifts to the______________?
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A. Lingual side

B. Mesial side

C. Distal side

D. Buccal side

3966. All are actions of CCK except_______________?
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A. Relax lower esophageal sphincter

B. Increased gastric secretion

C. Increased pancreatic secretion

D. Causes GB contraction

3967. Glycine is present in____________?
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A. Hemoglobin

B. All of the above

C. Purines

D. Creatine

E. Glutathione

3968. Quaternary structure of protein is_____________?
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A. Inter relation of amino acids in 2 polypeptide chains

B. The inter relation and arrangement of polypeptides in a protein with more than 2 polypeptide chains

C. The arrangement sequence of amino acids in the polypeptide chain

D. Inter relation between amino acids in a single polypeptide chain

3969. Amino acids excreted in the urine in cystinosis______________?
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A. All of the above

B. Lysine

C. Arginine

D. Cystine

E. Ornithine

3970. Which vitamin is related to a co-factor in glycine metabolism is______________?
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A. Thiamine

B. Vit E

C. Cobalamine

D. Folic acid

3971. Regarding myxedema the following are true except______________?
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A. B.M.R increased by 30 -45%

B. Swollen, oedematous look of the face

C. Impotency, amenorrhea

D. Dullness, loss of memory

3972. The most important function of hydrochloric acid in the stomach is_______________?
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A. Activation of pepsinogen

B. Stimulation of pancreatic secretion

C. Neutralization of chyme

D. Destruction of bacteria

3973. Steroid hormones are believed to enter target cells via_______________?
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A. Simple diffusion

B. Cholesterol lined pores in the plasma membrane

C. Facilitated diffusion

D. Carrier mediated endocytosis

3974. Avidin influences which of the following vitamins ?
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A. Phylloquinone

B. Biotin

C. Niacin

D. Thiamine

3975. Non essential amino acids are not_____________?
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A. Required in the diet

B. Absorbed in the intestines

C. Forming part of the proteins

D. Used by the body

3976. Pharyngeal phase of deglutition_____________?
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A. A and B

B. Vocal cords are closed

C. Is a reflex mechanism

D. Is a voluntary mechanism

3977. The following is false about tryptophan_____________?
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A. Involved in niacin synthesis

B. Involved in serotonin synthesis

C. Involved in melatonin in synthesis

D. Non-essential amino acid

3978. Following are the essential amino acid______________?
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A. Phenylalanine, Valine, Glycine

B. Phenylalanine, Tryptophan lysine

C. Histidine, Glutamine, Valine

D. Phenylalanine, Arginine Methinonine

3979. Absorption of vitamin K requires normal absorption of_________________?
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A. Amino acids

B. Glucose

C. Fat

D. Calcium

3980. Which vitamin is the most indispensable during mitosis______________?
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A. Ascorbic acid

B. Folic acid

C. Pantothenic acid

D. Aspartic acid

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