CBSE Class 10 Science 2020 · Paper 31/3/1 · Question 19
(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.
Answer
Trypsin digests proteins and lipase breaks down emulsified fats; villi increase the surface area and absorb digested food.
(a) (i) Trypsin, an enzyme of the pancreatic juice, digests proteins in the small intestine, breaking them down into smaller peptides.
(ii) Lipase, also in the pancreatic juice, breaks down emulsified fats into fatty acids and glycerol.
(b) The finger-like projections (villi): (1) increase the surface area for absorption; (2) absorb the digested food, which their rich supply of blood vessels carries to every cell of the body.
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