medical MCQs – Page 197

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 Review each marked answer and report any item that may be outdated or unclear.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

3921. Deficiency of nicotinic acid results in____________?
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A. Pernicious anemia

B. Night blindness

C. Beri-beri

D. Pellagra

3922. Hypercalcemia associated with malignancy is most often mediated by _____________?
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A. Parathyroid hormone related protein (PTHrP)

B. Interleukin 6 ( IL- 6)

C. Parathyroid hormone ( PTH)

D. Calcitonin

3923. In occlusion the teeth have_______________?
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A. Edge to edge contact

B. Surface to surface contact

C. Marginal contact

D. Cusp to cusp contact

3924. Biological activity of tocopherols has been attributed, in part to their actions as_____________?
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A. Antioxidant

B. Provitamin

C. Antidotes for selenium poisoning

D. Anticoagulants

3925. The nitrogen content in 50 gm of a typical dietary protein is most likely to be_____________?
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A. 10 gm

B. 8 gm

C. 16 gm

D. 5 gm

3926. Vitamin K antagonizes_____________?
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A. Production of clotting factors by liver

B. Thrombin formation

C. Corticosteroids

D. Bishydroxy coumarin

3927. Which one of the following amino acids is purely ketogenic ?
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A. Phenylalanine

B. Leucine

C. Proline

D. Isoleucine

3928. The side towards which mandible moves is called the_____________?
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A. Working side

B. Tooth contact side

C. Balancing side

D. Non- working side

3929. Thiamine deficiency can be diagnosed by measuring________________?
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A. Alkaline phosphatase levels in blood

B. Transketolase activity in RBC

C. Plasma pyruvate and lactic acid levels

D. Thiamine levels in blood

3930. Cephalic phase of gastric secretion is mediated by ______________?
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A. Hormones

B. Gastric

C. Neuro hormones

D. Vagus

3931. Vitamin also acting as hormones________________?
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A. Vitamin A

B. Vitamin D

C. Vitamin C

D. Vitamin B1

3932. Epinephrine is most closely related in structure to ____________________?
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A. Niacin

B. Tyrosine

C. Glycerol

D. Methionine

3933. Stomach accommodates the meal by______________?
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A. Deceptive relaxation

B. None of the above

C. Reactive relaxation

D. Receptive relaxation

3934. Small intestinal peristalsis is controlled by _______________?
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A. Meissners plexus

B. Vagus nerve

C. Parasympathetic

D. Myentric plexus

3935. Heme in haemoglobin is____________?
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A. Bonded to E7 histidine

B. Between Helix C and D

C. Surrounded by non polar environment

D. Protoporophyrin IX

3936. Peripheral neuropathy due to deficiency of vitamin is seen with_______________?
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A. Vit A

B. Vit E

C. Pantothenic acid

D. Pyridoxine

3937. Which of the following is correct about breakdown of hemoglobin (Hb)_____________?
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A. Hb?Heme?bilirubin?Urobilinogen?Biliverdin

B. Hb?Heme?bilirubin?Urobilinogen

C. Hb?Heme?Bilverdin?Uro bilinogen

D. Heme?Hb?Biliverdin?Urobilinogen

3938. All of the following are globular proteins except_______________?
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A. Myosin

B. Albumin

C. Globulin

D. Prolamines

3939. Key enzyme in urea synthesis is____________?
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A. Urease

B. Arginase

C. Ornithine

D. Carbamyl synthetase

3940. Which of the following amino acid is involved in gluconeogenesis______________?
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A. Glycine

B. Valine

C. Cysteline

D. All of the above

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