Biology MCQs

Page No. 110

The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds this stable form is called__________?


aAn organ


bA molecule


cTissue


dBoth a and c


View Answer A molecule

Percentage of water in brain cells is_______?


a20%


b65%


c85%


d89%


View Answer 85%

The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by________?


aMolecular biologists


bMicrobiologists


cFreshwater biologists


dSocial biologist


View Answer Molecular biologists

A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called__________?


aSubstrate


bCo-factor


cInhibitor


dPromotor


View Answer Inhibitor

The study of fossils is called__________?


aEnvironmental Biology


bHistorical biology


cPalaeontology


dSocial biology


View Answer Palaeontology

Which character differentiates living things from non-living organisms___________?


aThey live in the same ecosystem.


bThey are acted upon by the same environment


cThey are highly organized and complex made of one or more cells and contain genetic material


dBoth a and b



Ribosomes were discovered by_______?


aGolgi


bDe Duve


cPalade


dR.Brown


View Answer Palade

The innate tendency of offspring to resemble their parents is called________?


aheridity


bheridisk


cvaraition


dnone


View Answer heridity

PCR stand for _________?


aPolymerase chain reaction


bPoly carbomyl reaction


cPeptide chain reaction


dPentapeptide chain reaction



The tumours which are of small size and localized are___________?


abenign


bmalignant


cgentle


dnasty


View Answer benign

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