Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these:
help in regulating metabolism
are exclusively synthesized in the body of a living organism as at present
are conjugated proteins
enhance oxidative metabolism
Which of the following statements regarding enzyme inhibition is correct?
Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein.
Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme.
Non-competitive inhibition of an enzyme can be overcome by adding large amount of substrate.
Non-competitive inhibitors often bind to the enzyme irreversibly.
A competitive inhibitor of Succinic dehydorgenase is:
Malonate
Oxaloacetate
α-ketoglutarate
Malate
Enzyme which can act in the human body normally has optimum temperature of:
37-40 ◦C
45-65◦C
23-43◦C
34-35 ◦C
Which enzyme helps in the blood clot?
Pepsin
Fibrinogen
Thrombin
Amylase
What is common among amylase, rennin and trypsin?
These are all proteins.
These are oroteolytic enzymes.
These are produced in stomach.
These act at pH lower than 7.
Which enzyme helps in the digestion of fat in the alimentary canal of human body?
Protease
Lipase
Ligase
These are proteolytic enzymes.
Enzymes enhance the rate of reaction by:
forming a reactant-product complex
changing the equilibrium point of the reaction
combining with the product as soon as it is formed
lowering the activation energy of the reaction
Protease enzyme is present in:
Saliva
Liver
Alimentary canal
Kidneys
