medical MCQs – Page 377

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 Review each marked answer and report any item that may be outdated or unclear.

7521. In Hartnups disease _______ is excreted in the urine?
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A. Phenylalanine

B. Tryptophan

C. Ornithine

D. Glutamine

7522. The amino acid from which niacin synthesized is_______________?
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A. Threonine

B. Tryptophan

C. Tyrosine

D. Histidine

7523. The precursor of cholesterol synthesis is________________?
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A. Pyruvate

B. Acetyl CoA

C. Oxalo acetic acid

D. Acetic acid

7524. Ascorbic acid_____________?
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A. Is requirement for lysyl oxidase

B. Is harmless in high doses

C. Is a reducing agent

D. Decrease iron absorption

7525. Proteins are absorbed from GIT as_____________?
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A. Amino acids

B. All of the above

C. Peptides

D. Peptones

7526. Key enzyme in urea synthesis is____________?
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A. Arginase

B. Ornithine

C. Carbamyl synthetase

D. Urease

7527. Pernicious anaemia occurs in___________?
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A. Vit C deficiency

B. Vit D deficiency

C. Vit B1 deficiency

D. Vit B12 deficiency
7528. Which of the following is not a ketone body______________?
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A. Acetocetate

B. Acetone

C. Acetic acid

D. Beta hydroxybutyric acid

7529. Xerophthalmia is caused by_______________?
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A. Vitamin K deficiency

B. Vitamin D deficiency

C. Vitamin A deficiency

D. Vitamin C deficiency

7532. All are derived of cholesterol except________________?
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A. Glycocholic acid

B. Cholecystokinin

C. Chenodeoxy cholic acid

D. Testosterone

7533. Lipid is required in the average diet because it________________?
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A. is necessary for storage of carbohydrates

B. Provides essential fatty acid

C. aids in absorption of carbohydrates

D. has a high caloric value

7534. B-oxidation of odd-chain fatty aids produce_______________?
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A. Propionyl CoA

B. Acetyl CoA

C. Succinyl CoA

D. Malonyl CoA

7535. Aniacinosis results in______________?
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A. Beri beri

B. Perleche

C. Nyctalopia

D. Pellagra
7536. The precursor of steroid is_______________?
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A. Cholesterol

B. None of the above

C. Amino acids

D. Fatty acids

7537. All are genetic amino acid deficiency disease except___________?
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A. 6alactosemia

B. Alkaptonuria

C. Homocystinuria

D. Phenyl ketonuria

7538. Which of the following fatty acids are not syntehsised in human body_____________?
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A. Linoleic, arachidonic and stearic acid

B. Oleic, linoleic and linolenic acid

C. Arachidonic, linolenic and linoleic acid

D. Palmitic Oleic and arachidonic

7540. Histidine is converted to histamine by_____________?
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A. Transamination

B. Hydroxylation

C. Reduction

D. Decarboxylation