An allosteric inhibitor of the enzyme acts by binding to the
substrate
product
catalytic site of the enzyme
non-catalytic site of the enzyme
D.
non-catalytic site of the enzyme
The activity of certain enzymes, i.e. allosteric enzymes is regulated by compounds, which are not their substrates and which bind to the enzyme at specific sites away from the catalytic site.
They modify erizyme activity by producing a reversible change in the structure of the enzymes catalytic site. Allosteric inhibitors slow down the reaction rate by binding to the non-catalytic site of the enzyme.
Which one of the following enzymes is responsible for the conversion of norepinephrine to epinephrine?
Catecholamine-O-methyltransferase
Phenylalanine-N-methyltransferase
DOPA decarboxylase
Monoamine oxidase
Which one of the following matching pairs is incorrect?
Mollusca - Pseudocoel
Cnidaria - Nematocyst
Annelida - Chloragogen cells
Echinodermata - Water vascular system
Which one of the following matching pairs is incorrect?
Shell fish - Pisces
Silver fish - Arthropoda
Cuttle fish - Mollusca
Star fish - Echinodermata
Nitrogenase enzyme is a
magnesium-iron protein
molybdenum-iron protein
iron-copper protein
nickel-iron protein
Necrosis (die-back) ofthe tip of young leaves is caused due to the deficiency of
iron
manganese
zinc
copper
Guttation is a process of loss of water in
liquid form containing dissolved minerals
liquid form without dissolved minerals
vapour form with minerals
vapour form without minerals
