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WorksheetsEnzymes
Total questions: 10
Worksheet time: 5mins
Ribozyme is
RNA
DNA
Both of These
None of These
Enzymes which catalyze transfer of chemical group from one to another compound is
Hydrolase
Transferase
Isomerase
Lyase
The co-factor tightly bound to an enzyme at all times is
Prosthetic groups
Coenzyme
Metal activators
Inorganic ions
Induced fit model was given by
Kuhne
Fischer
Koshland
Pasteur
Inactive precursor of enzymes is called
Holoenzyme
Allosteric enzyme
Zymogen
Apoenzyme
Which of the following is an example of competitive inhibition?
Inhibition of cytochrome oxidase by cyanide
Inhibition of bacterial cell wall synthesis enzyme by penicillin
Di-isopropylphosphofluoridate (DIPF) inhibits nerve impulse transmission
Inhibition of succinate dehydrogenase in presence of malonate
Irreversible inhibitors often form covalent bond with
Ser or Cys residues at or near the active site
Positively charged residues at or near the active site
Any amino acid residues at or near the active site
Tryptophan and phenylalanine residues at or near the active site
What is the general mechanism of an enzyme?
It acts by increasing the activation energy
It acts by reducing the activation energy
It acts by decreasing the pH
It acts by increasing the pH
The enzymes involved in the feedback inhibition are known as
Apoenzymes
Holoenzymes
Coenzymes
Allosteric enzymes
The number of substrate molecules converted into products by an enzyme molecule in a unit time is called
Turnover Number
Saponification value
Catalytic efficiency
All of these
