AP BIOLOGY

ANIMAL PHYSIOLOGY

DIGESTION IN HUMANS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the product of digestion by amylase?
A
glucose
B
maltose
C
fructose
D
sucrose
Explanation: 

Detailed explanation-1: -Amylases digest starch into smaller molecules, ultimately yielding maltose, which in turn is cleaved into two glucose molecules by maltase.

Detailed explanation-2: -Final product: Two glucose molecules are the final product of maltose digestion.

Detailed explanation-3: -The products of amylase digestion are maltose and maltotriose (2-and 3--1, 4–linked molecules, respectively) and -dextrins containing 1, 6-glycosidic linkages, because 1, 6-glycosidic linkages in starch cannot be hydrolyzed by amylase.

Detailed explanation-4: -amylase, any member of a class of enzymes that catalyze the hydrolysis (splitting of a compound by addition of a water molecule) of starch into smaller carbohydrate molecules such as maltose (a molecule composed of two glucose molecules).

Detailed explanation-5: -During digestion, starch is partially transformed into maltose by the pancreatic or salivary enzymes called amylases; maltase secreted by the intestine then converts maltose into glucose. The glucose so produced is either utilized by the body or stored in the liver as glycogen (animal starch).

There is 1 question to complete.