medical MCQs – Page 153

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 Review each marked answer and report any item that may be outdated or unclear.

7601. Which of the following factors delay wound healing____________?
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A. B & C option

B. Ascorbic acid deficiency

C. Vitamin B12 deficiency

D. Infection

7602. The product of oxidation of odd chainfatty acids is______________?
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A. Propionyl CoA

B. Fumaryl CoA

C. Aceto acetyl CoA

D. Malonyl CoA

7603. R-RNA is mainly produced mainly in___________?
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A. Ribosome

B. Nucleolus

C. Endoplasmic reticulum

D. Nucleus

7604. Precursor of melanin is________________?
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A. Tyrosine

B. Phenylalanine

C. Tryptophan

D. Methionine

7605. Alkaptonuria, an inherited metabolic disorder of L0tyrosine metabolism is due to lack of_____________?
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A. Tyrosine transaminase

B. Tyrosine oxidase

C. Homogentisate oxidase

D. Parahydroxy phenyl pyruvate Hydroxylase

7606. Peripheral neuropathy due to deficiency of vitamin is seen with_______________?
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A. Pantothenic acid

B. Vit E

C. Vit A

D. Pyridoxine
7607. Fat provides ______% of bodys calories?
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A. 50%

B. 40%

C. 75%

D. 30%
7608. Which is the by product of the urea cycle_______________?
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A. Aspartate

B. Succinate

C. Fumarate

D. Ornithine

7609. Cell membrane consists of_________________?
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A. Lipids only

B. None of the above

C. Lipids and proteins

D. Protein only

7610. Creatine is formed metabolically from______________?
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A. Phenylalanine

B. Histidine

C. Arginine

D. Tryptophan

7611. Aromatic ring is present in_____________?
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A. Glycine

B. Phenylalanine, Glycine

C. Arginine

D. Phenylalanine
7612. The primary role of chaperones is to help in______________?
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A. Protein folding

B. Protein synthesis

C. Protein degradation

D. Protein denaturation

7613. Ligant for peroxisome proliferation activating receptor (PPAR) receptors, a group of nuclear hormone receptors that are involved in the regulation of genes related to glucose and lipid metabolism is_____________?
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A. Rosiglitgazone

B. Voglibose

C. Repaglinide

D. Exanatide

7614. Insulin caused lipogenesis by all except____________?
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A. Decreases intracellular cAMP level

B. Increases the transport of glucose in to the cells

C. Inhibits Pyruvate dehydrogenase

D. Increasing acetyl-CoA corboxylase activity

7615. Serum creatine kinase-3 (CK-3) is elevated in_______________?
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A. Brain tumours

B. Muscular dystrophy

C. Myocardial infarction

D. Alcoholic cirrhosis

7616. Which of the organelles contain DNA_________________?
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A. Ribsomes

B. Nucleus

C. Nucleolus

D. Golgi apparatus

7617. Which of the following is a phospholipid________________?
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A. Oleic acid

B. Glycogen

C. Sphingomyelin

D. Prostaglandin

7618. One of the following is not an amino acid______________?
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A. Glutamic acid

B. Hydroxy proline

C. Choline

D. Glycine

7619. The antibacterial substance present in tears which acts by splitting cell wall components is____________?
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A. Lysozyme

B. Betalysine

C. Lactoperoxidase

D. Penicillin

7620. The following vitamin is important in non-oxidative decarboxylation, transamination and transsulfuration reactions_____________?
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A. Thiamine

B. Pantothenic acid

C. Riboflavin

D. Pyridoxine
7621. Collagen is rich in_____________?
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A. Glutamate and proline

B. Proline and glycine

C. Alanine and glycine

D. Glutamate and glycine

7622. Which is the poorest source of calcium among the following______________?
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A. Egg yolk

B. Rice

C. Human milk

D. Cows milk

7623. Unsaturated fatty acids are converted to______________?
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A. Cholesterol

B. Saturated fatty acid

C. Prostaglandins

D. Cell membrane lipid

7624. The most important role of cholesterol is_____________?
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A. It is a component of cell membrane

B. It stores up energy

C. None of the above

D. It is a precursor of polyunsaturated fatty acids

7625. Following is non-essential amino acid_______________?
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A. Proline

B. Phenylalanine

C. Tryptophan

D. Threonine

7626. The substance essential for transfter of fatty acids across mitochondrial membrance_____________?
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A. Carnitine

B. Creatine

C. Creatinine

D. Coenzyme A

7627. Generation of free radicals occurs by all of the following mechanism EXCEPT_____________?
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A. Normal metabolism

B. All of the above

C. Oxygen toxicity

D. Reperfusion after ischemic injury
7628. FIGLU excretion test is to estimate deficiency of_______________?
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A. Vitamin folic acid

B. Vitamin B6

C. Niacin

D. Vitamin K

7629. Normal level of serum phosphorous is_____________?
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A. 1-2 mgm%

B. 7-9 mgm%

C. 40-50 mgm%

D. 2.5 4.5 mgm%
7630. Genes are_____________?
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A. Ribonucleic acid

B. Lipoproteins

C. Chromo proteins

D. Deoxy ribonucleic acid
7631. Niacin & riboflavin help in_____________?
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A. Methyl group transfer

B. Amine group transfer

C. Transamination reaction

D. Redox reactions
7632. False statement about haemoglobin structure________________?
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A. Hb structurally similar to myoglobin

B. Iron is present in ferrous state

C. Ferrous ions are in porphyrin rings

D. Hb has 2 polypeptide chains
7633. The daily requirement of protein for the adults is_________________?
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A. 60 gms

B. 120 gms

C. 6 gms

D. 250 gms

7634. Iron is complexed in haemoglobin to_______________?
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A. Valine

B. Leucine

C. Isoleucine

D. Histidine
7635. Cereals are deficient in_____________?
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A. Vitamin C

B. Vitamin B complex

C. Iron

D. Calcium

7636. Which of the following amino acid is involved in gluconeogenesis______________?
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A. Valine

B. Glycine

C. Cysteline

D. All of the above
7637. Saponification means hydrolysis of fats by________________?
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A. Alkali

B. Enzymes

C. Water

D. Acid

7638. Which vitamin is related to a co-factor in glycine metabolism is______________?
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A. Folic acid

B. Vit E

C. Cobalamine

D. Thiamine

7639. All of the following are globular proteins except_______________?
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A. Myosin

B. Albumin

C. Prolamines

D. Globulin

7640. The process of transfer of information from the RNA to the proteins is called______________?
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A. Mutation

B. Conjugation

C. Translation

D. Transcription

7641. Tryptophan load test helps in the evaluation of deficiency of the vitamin______________?
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A. Niacinamide

B. Folic acid

C. Cyano cobolamine

D. Pyridoxine
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
7643. Ferritin an inactive form of iron is stored in_____________?
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A. All of the above

B. Gut

C. Liver

D. Spleen

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

7647. If bile acid recycling time is short, then bile salt reservoir pool will be______________?
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A. Has no effect

B. Uchanged

C. Decreased

D. Increased

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

7650. Heme is converted to bilirubin mainly in_____________?
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A. Spleen

B. Liver

C. Kidney

D. Bone marrow