Biochemistry MCQs

Page No. 18

Iron absorption is decreased in presence of all except____________?


aPhytates

✖


bAscorbic acid

✓


cTannins

✖


dPhosphates

✖


View Answer Ascorbic acid

The sigma subunit of prokaryotic RNA polymerase_______________?


aBinds the antibiotic Rifampicin

✖


bIs inhibited by a-amanitin

✖


cSpecifically recognizes the promoter site

✓


dIs part of the core enzyme

✖



The patient suffered from hypogondism, failure to thrive, lose of taste and unable to maintain stability. This shows the deficiency of_____________?


a Zinc

✓


bChromium

✖


cCopper

✖


dPotassium

✖


View Answer Zinc

Ammonia produced by brain is trapped as_____________?


aUrea

✖


bUric Acid

✖


cCreatinine

✖


dGlutamine

✓


View Answer Glutamine

Serum creatine kinase-3 (CK-3) is elevated in_______________?


aMuscular dystrophy

✓


bMyocardial infarction

✖


cAlcoholic cirrhosis

✖


dBrain tumours

✖


View Answer Muscular dystrophy

Transcription is the synthesis of____________?


aSingle stranded complimentary copy of DNA

✓


bDouble stranded complimentary copy of DNA

✖


cComplimentary copy of RNA

✖


dCOmplimentary copy of rRNA

✖



Which of the following is used in recombinant DNA technology ?


aRestriction endonucleases

✓


bPCR

✖


cReverse transcriptase FISH

✖


dNone of these

✖



Denaturation of double stranded DNA involves_______________?


aIt gets broken down to nucleotides

✖


bIt becomes single stranded reversibly

✖


c It becomes single stranded irreversibly

✓


d It becomes double stranded irreversibly

✖



On complete hydrolysis of DNA we will get all the following except______________?


aDeoxy pentose sugar

✖


bPhosphoric acid

✖


cAdenosine

✓


dPurine bases

✖


View Answer Adenosine

R-RNA is mainly produced mainly in___________?


aNucleus

✖


bNucleolus

✓


cRibosome

✖


dEndoplasmic reticulum

✖


View Answer Nucleolus

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