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 below:

A = a m y l a s e, B = m a l t a s e, C = l a c t a s e, D = i n v e r t a s e

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A = a m y l a s e, B = m a l t a s e, C = i n v e r t a s e, D = l a c t a s e

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A = a m y l a s e, B = i n v e r t a s e, C = m a l t a s e, D = l a c t a s e

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A = a m y l a s e, B = l a c t a s e, C = m a l t a s e, D = i n v e r t a s e

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Solution

The correct option is D $A = a m y l a s e, B = l a c t a s e, C = m a l t a s e, D = i n v e r t a s e$
Amylase is an enzyme that catalyzes the hydrolysis of starch into sugars.
Lactase enzyme is found in the small intestine of mammals that catalyzes the breakdown of lactose (milk sugar) into the simple sugars glucose and galactose.
Maltase, an enzyme that catalyzes the hydrolysis of the disaccharide maltose to the simple sugar glucose.
For foods that include sucrose, invertase splits the sugar into its parts of glucose and fructose.
So, the correct answer is 'A=amylase, B=lactase, C=maltase, D=invertase".

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$\begin{matrix} D i g e s t i v e j u i c e s a n d e n z y m e s & S u b s t a n c e d i g e s t e d & P r o d u c t F o r m e d S a l i v a A m y l a s e G a s t r i c j u i c e P r o t e a s e (p e p s i n) a n d h y d r o c h l o r i c a c i d P a n c r e a t i c j u i c e P r o t e a s e s (t r y p s i n) L i p a s e s A m y l a s e I n t e s t i n a l e n z y m e s P e p t i d a s e s S u c r a s e L a c t a s e M a l t a s e B i l e f r o m t h e l i v e r B i l e s a l t s \end{matrix}$

Q. How many carbohydrate digesting enzymes in the list given are found in intestinal juice? Enterokinase, Chymotrypsin, Aminopeptidase, Pepsin, Lactase, Rennin, Carboxypeptidase, Nuclease, Nucleosidase, Maltase, Sucrase.

Q. The given flowchart shows the fate of carbohydrate during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D.

How many enzymes in the list given below are found in intestinal juice?

Trypsin, Pepsin, Sucrase, Lactase, Rennin, Carboxypeptidase, Nuclease, Dipeptidase, Maltase, Enterokinase

Q. Enzymatic reactions are given in Column I and enzymes in Column II.

Column I	Column II
$(A)$ Maltose $\to$ Glucose	$(i)$ Zymase
$(B)$ Sucrose $\to$ Glucose $+$ Fructose	$(i i)$ Pepsin
$(C)$ Glucose $\to$ Ethyl alcohol $+ C O_{2}$	$(i i i)$ Maltase
$(D)$ Starch $\to$ Maltose	$(i v)$ Invertase
$(E)$ Proteins $\to$ Amino acids	$(v)$ Diastase

Choose the correct matching of enzymatic reaction and enzyme that catalyses the correct reaction from the codes given below.

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