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Biology
106)A specific low molecular weight substance such as the product of another enzyme in the chain reaction which binds with a specific site of the enzyme different from its substrate binding site is called as
	Irreversible inhibitor		Competitive inhibitor
	Allosteric modulator		Non-competitive inhibitor
Answer :
107)Sulpha drugs control bacterial pathogens by
	They are competitive inhibitors of folic acid synthesis in bacteria		They control the bacterial pathogens by feedback inhibition
	Non-competitive inhibition		Allosteric modulation
Answer :
108)Cyanide kills an animal by
	Competitive inhibitor of enzyme cytochrome oxidise		Killing brain cells
	Killing the cells of cardiac muscles		Inhibiting cytochrome oxidise, a mitochondrial enzyme essential for cellilar respiration by non-competitive inhibition
Answer :
109)Which of the following is not an example of feed back inhibition?
	Inhibition of hexokinase by glucose-6-phosphate		Inhibition of succinic dehydrogenase by malonate
	Inhibition of threonine deaminase by isoleucine in bacteria		Inhibition of phosphofructokinase by ATP
Answer :
110)Which one of the following is not a non competitive inhibitor
	Cyanide		H2S
	Malonic acid		HCO3-
Answer :
111)In non competitive inhibition
	The enzyme gets activated		The tertiary structure of enzyme is destroyed
	The inhibitor gets absorbed on the active site of the enzyme		The enzyme gets hydrolysed completely
Answer :
112)In enzyme pepsin
	Two third of amino acids are working actively as enzyme		The whole surface of enzyme is active
	Only one amino acid tyrosine of this enzyme is active and rest amino acids are inactive		Three fourth of the amino acids are working actively as enzyme
Answer :
113)The feed back effect in enzymatic action refers to
	The effect of enzyme concentration on its rate of action		The effect of substrate on the rate of enzyme action
	The effect of an external compound on the rate of enzymatic action		The effect of end products on the rate of enzymatic action
Answer :
114)The lock and key hypothesis was propounded by
	Koshland		Kuhne
	Emil Fischer		Buchner
Answer :
115)The best evidence for template theory of enzyme action is
	Compounds dissimilar in structure to the substrate inhibit the reaction		Enzymes determine the direction of reaction
	Enzymes speed up reactions by definite amount		Compounds similar in structure to the substrate inhibit the reaction
Answer :
116)The number of isoenzyme forms of alcohol dehydrogenose in maize are
	4		8
	16		100
Answer :
117)According to IUB system of nomenclature the enzymes are divided into
	4 classes		6 classes
	8 classes		12 classes
Answer :
118)The required pH for action of trypsin is
	2		4.5
	7		8
Answer :
119)Enzyme bromelain is found in
	Guava		Papaya
	Pineapple		Cucurbita
Answer :
120)In which of the following extra cellular enzymes are not found?
	Insectivorous plant		Green algae
	Bacteria		Fungi
Answer :

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