Question: 144: Choose the incorrect enzymatic reaction:
(1) Maltose \xrightarrow{\text { Maltase }} Glucose + Galactose
(2) Sucrose \xrightarrow{\text { Sucrase }} Glucose + Fructose
(3) Lactose \xrightarrow{\text { Lactase }} Glucose + Galactose
(4) Dipeptides \xrightarrow{\text { Dipeptidases }} Amino acids
Answer: Option (1)
Explanation:
Maltose is a disaccharide composed of two glucose molecules.
Maltase enzyme hydrolyses maltose into glucose and glucose, not glucose and galactose.
Sucrose is made up of glucose and fructose, and sucrase correctly breaks it into glucose and fructose.
Lactose consists of glucose and galactose, and lactase correctly hydrolyses it into glucose and galactose.
Dipeptidases act on dipeptides and split them into their constituent amino acids.
Therefore, the reaction given in option (1) is incorrect.