medical MCQs – Page 383

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 Review each marked answer and report any item that may be outdated or unclear.

7642. Which of the following is used in recombinant DNA technology ?
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A. PCR

B. None of these

C. Reverse transcriptase FISH

D. Restriction endonucleases
7644. 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
7645. ALbumin is synthesized by_____________?
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A. Muscle

B. Liver

C. Kidney

D. Spleen

7646. Both Vitamin K and C are involved in______________?
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A. The microsomal hydroxylation reactions

B. The synthesis of clotting factors

C. Post translational modifications

D. Antioxidant mechanisms

7648. Which of the following is not a post transcriptional modification of RNA ?
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A. Glycosylation

B. Splicing

C. 3? polyadenylation

D. 5? capping

7649. The main function of mitochondria is______________?
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A. Protein synthesis

B. Electron transfer

C. Oxidation

D. Fat synthesis

7651. Tocopherol is associated with____________?
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A. Vitamin K

B. Vitamin D

C. Vitamin A

D. Vitamin E
7652. The main function of HDL is____________?
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A. Transport cholesterol from liver to peripheral tissues

B. Esterification with PUFA

C. Both of the above

D. None of the above
7653. Which one of the following amino acids is purely ketogenic ?
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A. Proline

B. Isoleucine

C. Leucine

D. Phenylalanine

7654. Most of vitamin B12 in the body is stored as_____________?
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A. Hydroxy B12

B. Methyl B12

C. None of the above

D. Cyano cobalamine

7656. The following is not a phospholipid______________?
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A. Cephalin

B. Cerebroside

C. Lecithin

D. Sphingomyelin

7657. Avidin influences which of the following vitamins ?
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A. Phylloquinone

B. Biotin

C. Thiamine

D. Niacin

7658. Vitamin B12 is_______________?
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A. Extrinsic factor of castle

B. Intrinsic factor of castle

C. A fat soluble vitamin

D. Cyano cobalamine

7659. Digestion of proteins is initiated by________________?
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A. Amylase

B. Pepsin

C. Sucrase

D. Chymotrypsin

7660. The lipoprotein particles that have the highest percentage concentration of cholesterol is_______________?
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A. LDL (Low density lipoprotein)

B. HDL (High density lipoprotein)

C. VLDL (Very low density lipoprotein)

D. Chylomicron