18. (a) State the role played by the following in the process of digestion.
(i) Enzyme trypsin
(ii) Enzyme lipase
(b) List two functions of finger like projections present in the small
intestine.
Answers
Explanation:
trypsin:- Trypsin is an enzyme that helps us digest protein. In the small intestine, trypsin breaks down proteins, continuing the process of digestion that began in the stomach. It may also be referred to as a proteolytic enzyme, or proteinase. Trypsin is produced by the pancreas in an inactive form called trypsinogen.
lipase:- Lipase is an enzyme the body uses to break down fats in food so they can be absorbed in the intestines. Lipase is produced in the pancreas, mouth, and stomach.
b)The finger projections present in the small intestine are called villi. Villi are small finger-like projections located in the walls of the small intestine. Their function is to increase the surface area in order to maximise the absorption of digested food. ... Microvilli are microscopic cells that project from the villus which further increases surface area for faster absorption.
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Answer:
ans (a):(i) enzyme trypsin is released by pancreas and it help in protein
digestion that is converting proteos and peptones into amino acids.
(ii) enzyme lipase is also released by pancreas. it converts lipids into
soluble fats.
ans(b): these small projections are known as villi ..
1. increase the surface area for absorption
2. lacteals are present in villi which help in absorption of fats