Biology MCQs

Page No. 98

If more substrate to already occurring enzymatic reaction is added more enzyme activity is seen because_____________?


aThere is probably more substrate present than there is enzyme.


bThere is probably more enzayme available than there is substrate.


cThere is probably more product present than there is either substrate or enzyme.


dThe enzyme substrate complex is probably failing to form during the reaction



Cellular organelles related with H2O2 are___________?


aGlyoxisomes


bLysosomes


cPeroxisomes


dRibosomes


View Answer Peroxisomes

A three dimensional dcavity bearing a specific charge by which the enzyme reacts with its substrate is called_________________?


aActive site


bBinding site


cCatalytic site


dAllosteric site


View Answer Active site

Which statement about enzyme is incorrect_________________?


aSome of them consist solely of protein with no non protein part.


bThey catalyze a chemical reaction without being utilized.


cAll enzymes are fibrous Proteins.


dThey without their cofactor are called apoenzyme.



Centrioles are composed of ________ triplets of microtubules.


a3


b9


c10


d15


View Answer 9

An activated enzyme consisting of polypeptide chain and a cofactor is called_______________?


aApoenzyme


bHoloenzyme


cActivated enzyme


dBoth b and c


View Answer Both b and c

A cofactor made of inorganic ion which is detachable is called__________________?


aProsthetic group


bCoenzyme


cActivator


dCofactor


View Answer Activator

In golgi apparatus the maturing face is____________?


aBiconcave


bConvex


cSpherical


dConcave


View Answer Concave

In which of the following location enzymes controlling cellular respiration are present____________?


aNucleus


bChlorophast


cMilochondria


dRibosome


View Answer Milochondria

Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called_____________________?


aCofactor


bCoenzymes


cActivator


dEnzymes


View Answer Enzymes

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