Multiple Choice QuestionsSelect the type of enzyme involved in the following reaction
S - G + S' S + S' - G
Lyase
Transferase
Hydrolase
Dehydrogenase
Usually the activity of the enzymes is optimum at normal body temperature. At about 0C the activity of the enzyme is
minimum
maximum
Both (a) and (b)
None of these
Non-reducing sugars have
free CHO group and bound CO group
free CO group and bound CHO group
both CO and CHO free groups
neither free CO nor free CHO groups
Which enzyme converts glucose into alcohol ?
Zymase
Diastase
Invertase
Lipase
A.
Zymase
Glucose and fructose are both converted to ethanol and carbon dioxide in presence of zymase enzyme.
C6H12O6 2C2H5OH + 2CO2
Glucose/ Fructose Ethanol
Invertase enzyme converts sugar into glucose and fructose.
C12H22O11 + H2O C6H12O6 + C6H12O6
Sugar Glucose Fructose
Gastric juice consists of weak gastric lipase which converts some fats into monoglycerides and fatty acids. Bile salts of the bile break down fat droplets into many small ones by reducing the surface tension offat droplets. This procress is called emulsification. This increases lipase action on fat. Lipase is present in the pancreatic juice and intestinal juice. Pancreatic lipase is the principal enzyme for the digestion of fat.
Fat Emulsified fat
Emulsified Fatty acid + Diglyceride
Diglyceride Fatty acid + Monoglyceride
Monoglyceride Fatty acid + Glycerol
The enzyme, which combines with non-protein part to form a functional enzyme known as :
co-enzyme
holoenzyme
apoenzyme
prosthetic group
Major role of minor elements inside living organisms is to act as :
binder of cell structure
constituent of hormone
building blocks of important amino acids
cofactor of enzymes
Defect in amino acid metabolism may results in :
albinism
porphyria
Wilson's disease
phenylketonuria
Switch
