What is the primary function of enzymes secreted by the small intestine and the pancreas in the digestive system?
A
To break down carbohydrates, proteins, and fats into absorbable units.
B
To stimulate the production of bile in the liver.
C
To transport nutrients into the bloodstream.
D
To neutralize stomach acid and protect the intestinal lining.
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1
Understand the role of enzymes in the digestive system: Enzymes are biological catalysts that speed up chemical reactions, specifically the breakdown of food molecules into smaller, absorbable units.
Identify the enzymes secreted by the small intestine and pancreas: The pancreas secretes enzymes like amylase, lipase, and proteases, while the small intestine produces enzymes such as maltase, sucrase, and lactase.
Examine the function of these enzymes: Pancreatic enzymes break down carbohydrates (amylase), proteins (proteases), and fats (lipase) into smaller molecules. Intestinal enzymes further break down carbohydrates into simple sugars.
Consider the absorption process: Once food is broken down into absorbable units, these nutrients can be transported across the intestinal lining into the bloodstream.
Clarify the primary function: The main role of these enzymes is to facilitate the digestion of carbohydrates, proteins, and fats, making them ready for absorption, rather than stimulating bile production or neutralizing stomach acid.