medical MCQs – Page 385

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 Review each marked answer and report any item that may be outdated or unclear.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

7681. The normal value of serum potassium level is____________?
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A. 3.8-5 meq/L

B. 6-7.2 meq/L

C. 2.8-3.8 meq/L

D. 5-5.8 meq/L

7682. The main pathway for De Novo synthesis of fatty acids occurs in_______________?
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A. Nucleus

B. Mitochondria

C. None of the above

D. Cytosol

7683. All are components of basement membrane except________________?
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A. Laminin

B. nidogen

C. Eutactin

D. Rhodopsin

7684. Who is known for his work on scurvy ?
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A. Fracastorius

B. Edward Jenner

C. James lind

D. John snow

7685. NADPH is required for________________?
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A. Fatty acid synthesis

B. Glycolysis

C. Gluconeogenesis

D. Glycogenolysis

7686. True about G protein couple receptors is _________________ ?
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A. G proteins bind to hormones on the cell surface

B. G Proteins act as inhibitory and excitatory because of difference in alpha subunit

C. All the three subunits alpha, beta and gamma should bind each other for G protein to act

D. G protein is bound to GTP in resting state

7687. HMG-CoA is formed during metabolism of all except______________?
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A. Ketone bodies

B. Leucine

C. Bile acids

D. Cholesterol

7688. Quaternary structure of protein is_____________?
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A. The inter relation and arrangement of polypeptides in a protein with more than 2 polypeptide chains

B. Inter relation of amino acids in 2 polypeptide chains

C. Inter relation between amino acids in a single polypeptide chain

D. The arrangement sequence of amino acids in the polypeptide chain

7689. Which of the following process in involved in conversion of DNA to RNA___________?
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A. Translocation

B. Conjugation

C. Transcription

D. Transduction

7690. A mutation that converts an amino acid codon to a stop codon is a_____________?
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A. Silent mutation

B. Transversion

C. Nonsense mutation

D. Frame shift mutation

7691. Ketone bodies are normally synthesized from______________?
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A. Glucose

B. Acetyl-CoA

C. Acetone

D. Glycerol

7692. All of the following are true about manifestations of vitamin E deficiency except_____________?
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A. Posterior column abnormalities

B. Cerebellar ataxia

C. Hemolytic anemia

D. Autonomic dysfunctions

7693. Hydroxylation of proline require the following except____________?
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A. O2

B. Fe+2

C. Ascorbic acid

D. Succinate

7694. Rate limiting step in cholesterol synthesis is_______________?
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A. HMG CoA lyase

B. HMG CoA reductase

C. Mevalonate synthetase

D. HMG CoA synthetase

7695. The transmembrane adhesive molecules present in hemi desmosomes which specifically binds to basal lamina glycoprotein laminin are______________?
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A. a and B catenin

B. The catenins desmoplakin

C. Integrin a6-B4

D. cadherins desmoglein

7696. Which of the following is a precursor of protoporphyrin_______________?
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A. Glycine

B. Leucine

C. Alanine

D. Histidine

7697. The vitamin K dependent proteins C and S are characterized by their ability to inactivate factor_____________?
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A. VIII a

B. VIII a and V a

C. None of the above

D. V a

7698. A fatty acid that is not synthesized in man is_____________?
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A. Palmitic acid

B. Oleic acid

C. Stearic acid

D. Linoleic acid

7699. Argentaffinoma is characterized by excess excretion of_____________?
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A. 5- Hydroxy indole acetate

B. 3- Hydroxy phenyl pyruvate

C. Phenyl acetate

D. Phenyl lactate

7700. The portion of DNA in Which RNA polymerase binds and starts transcription is called______________?
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A. Operator

B. Terminator

C. Anti terminator

D. Promoter region

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