Quiz on Enzymes | Enzymology Quiz | Biochemistry Quiz

1. The enzyme
Reduces the energy of activation
Increases total energy of substrate
Increases total energy of the product
Increases the equilibrium constant
2.All the following statements are true with regard to enzymes, except:
Enzymes lower activation energy
most of the enzymes are preotein in nature
They accerlerate the chemical reaction
They alter equilibrium of the reaction
3.An example of lyase is
Amylase
Fumarase
Glutamine synthetase
Cholinesterasel
4.All the following metalloenzymes contain copper, except
Tyrosinase
Superoxide dismutase
Cyctochrome oxidase
Glutathione peroxidase
5. The enzyme belonging to the class ligase is
Glutathione Synthetase
Glycogen Synthetase
Histidine decarboxylase
Tyrosinase
6. Co enzymes are
dialyzable,non protein molecules
colloidal protein molecules
structural analogs of enzymes
different forms of the same enzyme
7. Digestive enymes belong to the class of
Hyrolases
Ligases
Lyases
Oxidoreductases
8. The co enzyme:
accepts one of the products of the reactio
increases the affinity of apo enzyme to substrate
lowers the activation energy
Accepts one of the products to the reaction
9.Which one of the following enzymes is containing molybdenum?
Cytochrome oxidase
Xanthine oxidase
Carbobonic anhydrase
Phosphoglucomutase
10. All the following statements are true = with regard to the enzymes called synthases abd synthetases, except
Glycogen synthase belongs to the class transferases
Glutamine synthetase is belonging to the class of ligases
Synthetses are enzymes belonging to ligases
Synthetass and synthases are synonyms
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