Q. The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given.
A) A-Amylase, B-Maltase, C- Lactase, D-Invertase
B) A-Amylase, B- Maltase, C-Invertase, D-Latcase
C) A-Amylase, B-Invertase, C-Maltase, D-Lactase
D) A-Amylase, B-Lactase , C- Maltase , D- Invertase
Explanation
$Starch\ \overset{\ \ \ \ \ Amylase\ \ \ \ \ \ }{\rightarrow}\ Maltose + \ Isomaltose + \ limit\ dextrins$ Lactose
$Milk\ sugar\underset{\beta - galactosidase}{\overset{\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Lactase\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}}\ Glucose + Galactose$ $Maltose\ \ \underset{\ a - glucosidase\ \ }{\ \overset{\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Maltase\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ }{\rightarrow}}Glucose + \ Glucose$ Sucrose $Cane\ sugar\underset{\ \ \beta - fructosidase}{\ \overset{\ \ \ \ \ Sucrase/invertase\ \ \ \ \ \ }{\rightarrow}}\ Glucose + Fructose$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.