What is produced by the action of lipase on fats?
- amino acids
- fatty acids
- glycerol
A) 1 and 3
B) 1 only
C) 2 and 3
D) 2 only
▶️ Answer/Explanation
Ans: C
Lipase is an enzyme that hydrolyzes fats (triglycerides) into fatty acids (2) and glycerol (3). Amino acids (1) are produced by protease enzymes breaking down proteins, not fats. Thus, the correct products are fatty acids and glycerol, making C (2 and 3) the right answer.
Options A, B, and D are incorrect because they either include amino acids or exclude one of the correct products.
The diagram shows the apparatus used in an experiment to demonstrate two processes that take place in the body.
After one hour, the water outside the dialysis tubing contained reducing sugars.
Which two processes are represented by this experiment?
A) absorption and digestion
B) absorption and egestion
C) digestion and egestion
D) digestion and ingestion
▶️ Answer/Explanation
Ans: A
The experiment shows digestion (starch broken down to sugars by saliva) and absorption (sugars moving through the membrane). Egestion (B/C) is waste removal, and ingestion (D) is food intake – neither are shown here.