Example of enzyme specificity:
Ans. D. All of theseEnzymes are highly specific in their action as compared with chemical catalysts. Three types of enzyme specificities are well-recognized.(a) Stereospecificity: The enzymes act only on one isomer and therefore exhibit stereoisomerism. e.g., L-amino acid oxidase on L-amino acids; hexokinase on D-hexose (Note: isomerases do not exhibit stereospecificity).(b) Reaction specificity The same substrate can undergo different types of reactions, each catalyzed by a separate enzyme e.g., amino acids undergoing transamination, decarboxylation etc.(c) Substrate specifity This may be absolute, relative or broad e.g., urease, ligase, hexokinase.
Stereo specificity
Reaction specificity
Substrate specificity
All of these
Enzymes