medical MCQs – Page 379

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 Review each marked answer and report any item that may be outdated or unclear.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

7561. Cytochromes are_____________?
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A. Metal containing flavoproteins

B. Iron-porphyrin proteins

C. Pyridine nucleotides

D. Riboflavin containing nucleotides

7562. One of the following is nonessential amino acid______________?
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A. Cystine

B. Valine

C. Methionine

D. Tyrosine

7563. Which of these is not included in parenteral therapy ?
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A. Carbohydrates

B. Fibres

C. Fats

D. Micronutrients

7564. Biotin is required for the activity of_______________?
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A. Lactate dehydrogenase

B. Phosphohexose isomerase

C. Pyruvate carboxylase

D. Succinate thiokinase

7565. The lipid, which acumulates in fatty liver, is_______________?
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A. Lipoprotein

B. FFA

C. Triglycerides

D. Cholesterol

7566. Glycine is present in____________?
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A. Purines

B. Creatine

C. All of the above

D. Glutathione

E. Hemoglobin

7567. Non essential amino acids are not_____________?
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A. Required in the diet

B. Used by the body

C. Absorbed in the intestines

D. Forming part of the proteins

7568. The total blood concentration of ketone bodies in well fed individual is__________?
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A. 20 mg%

B. 5 mg%

C. 12 mg%

D. 1 mg%

7569. Within the RBC hypoxia stimulates glycolysis by which of the following regulating pathways ?
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A. Hypoxia inhibits hexokinase

B. Hypoxia stimulates release of all glycolytic enzymes from Band 3 on RBC membrane

C. Activation of the regulatory enzymes by high PH

D. Hypoxia stimulates pyruvate dehydrogenase by increased, 2, 3DPG

7570. Enzyme regulating the conversion of ethanol to acetaldehyde________________?
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A. Acetaldehyde dehydrogenase

B. Catalase

C. Alcohol dehydrogenase

D. Enolase

7571. True about denaturation of protein is all except______________?
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A. Disruption of secondary structure occurs

B. Biological activity is retained

C. Unfolding occurs

D. Sequence of amino acids remain the same

7572. Angular cheilosis is frequently associated with deficiency of______________?
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A. Riboflavin

B. Folic acid

C. Niacin

D. Thiamine

7573. The initiation codon for protein synthesis is_____________?
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A. AUG

B. UUU

C. UAA

D. UAG

7574. End product of purine metabolism is______________?
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A. Creatinine

B. Xanthine

C. Phosphates

D. Uric acid

7575. Transcription is the synthesis of____________?
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A. Double stranded complimentary copy of DNA

B. Complimentary copy of RNA

C. Single stranded complimentary copy of DNA

D. COmplimentary copy of rRNA

7576. The following is not a carrier protein________________?
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A. Haptoglobulin

B. Cerruloplasmin

C. Transferrin

D. Transcobalamine

7577. HMG CoA reductase is inhibited by_____________?
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A. Clofibrate

B. cholestyramine

C. Gemfibrosil

D. Lovastatin

7578. Which of the following is a derived a derived protein_____________?
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A. Lactalbumin

B. Peptones

C. Prolamines

D. Protamines

7579. In the body, metabolism of 10 g of protein would produce approximately____________?
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A. 410 Kcal

B. 41 Kcal

C. 4100 Kcal

D. 1 Kcal

7580. Albinism is a genetic disease that results in incomplete metabolism of______________?
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A. Cystine

B. Tyrosine

C. Histidine

D. Alanine

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