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Multiple Choice
In human digestion, amylase is the enzyme primarily responsible for breaking down which type of carbohydrate?
A
Starch (amylose and amylopectin)
B
Cellulose
C
Triacylglycerols
D
Lactose
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Verified step by step guidance
1
Identify the role of amylase in human digestion, which is to catalyze the hydrolysis of specific carbohydrates.
Recall that amylase specifically targets polysaccharides composed of glucose units linked by alpha-glycosidic bonds.
Recognize that starch, which includes amylose and amylopectin, is a polysaccharide made of glucose units connected by alpha-1,4 and alpha-1,6 glycosidic bonds, making it a substrate for amylase.
Understand that cellulose is a polysaccharide with beta-1,4 glycosidic bonds, which human amylase cannot break down due to the different bond type.
Note that triacylglycerols are lipids, not carbohydrates, and lactose is a disaccharide broken down by lactase, not amylase.