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Class XI Biology
Enzymes
Biology Class 11 Chapter 2 MCQs – Enzymes Notes & Practice Questions
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1
The biocatalysts which increase the chemical reaction are called:
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Enzymes increase the chemical reactions by lowering the:
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Mostly enzymes are composed of:
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The term enzymes was proposed by:
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The molecules of nucleic acid act as:
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The site of enzymes where substrate is attached, called:
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Lock-key theory about action of enzyme is proposed by:
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The inactive site of enzyme is called:
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Induced fit model theory about the action of enzyme is proposed by:
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The enzymes which consist of only proteins are called:
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The enzymes which are composed of proteins and other groups are called:
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The protein part of enzyme is called:
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The non-protein part of enzyme is called:
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The complete enzyme with protein and non-protein parts is called:
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The enzymes which help in oxidation and reduction reactions are called:
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The enzymes which catalyze the transfer of a group from one substrate to another one is called:
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The enzymes which help in the breakdown of compound are called:
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The enzymes which are involved in conversion of compound into another compound having similar formula but different structures are called:
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The enzymes which catalyze the removal or addition of one group from or to a double bond are called:
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The enzymes which help in the combination of two molecules by the use of energy are called:
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When the prosthetic group is of inorganic type, it is called:
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NAD, NADP, FMN and ATP are considered as:
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The inorganic substances which increase the activity of enzymes are called:
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The substances which decrease the activity of enzymes are called:
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The inhibitors which resembles with the substrate and are attached to the active site of enzymes are called:
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The inhibitors which are attached to the allosteric site inactive of enzymes are called:
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The pH of Pepsin enzyme is:
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The pH of Trypsin enzymes is:
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When the product binds with enzymes active side the process is called:
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Radiations may affect the enzyme and takes part in: