Enzymes - Mock Test 11

Question 101

Out of the total enzymes present in a cell, a mitochondrion alone has?

A) 4% B) 70% C) 95% D) 50%

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Question 102

The energy required to start an enzymatic reaction is called?

A) Chemical energy B) Metabolic energy C) Activation energy D) Potential energy

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Question 103

A metabolic pathways is a?

A) Route taken by chemicals B) Sequence of enzyme facilitated chemical reactions C) Route taken by an enzyme from one reaction to another D) Sequence of origin of organic molecules

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Question 104

Name the enzyme that acts both as carboxylase at one time and oxygenase at another time?

A) PEP carboxylase B) RuBP carboxylase C) Carbonic anyhdrase D) None of these

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Question 105

Which mineral element controls the activity of Nitrate reductase ?

A) Fe B) Mo C) Zn D) Ca

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Question 106

The fruit when kept is open, tastes bitter after 2 hours because of?

A) Loss of water from juice B) Decreased concentration of fructose in juice C) Fermentation by yeast D) Contamination by bacterial enzymes

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Question 107

Site of enzyme synthesis in a cell is?

A) Ribosomes B) RER C) Golgi bodies D) All of these

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Question 108

Who got Nobel Prize in 1978 for working on enzymes?

A) Koshland B) Arber and Nathans C) Nass and Nass D) H.G. Khorana

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Question 109

Part of enzyme which combines with nonprotein part to form functional enzyme is?

A) Apoenzyme B) Coenzyme C) Prosthetic group D) None of these

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Question 110

The ratio of enzyme to substrate molecules can be as low as?

A) 1 : 100,000 B) 1 : 500,000 C) 1 : 10,000 D) 1 : 1,000

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