Lipase is the enzyme that catalyses the breakdown of triacylglycerol into:

Correct Answer: C

Rationale: Lipase breaks down triacylglycerols into fatty acids and glycerol, aiding in the digestion and absorption of fats.

Correct Answer: B

Rationale: Peyer's patches in the small intestine produce lymphocytes, which are part of the immune system.

Correct Answer: B

Rationale: Ptyalin (salivary amylase) is secreted by salivary glands and works in a slightly acidic to neutral pH.

Correct Answer: B

Rationale: Bilirubin and biliverdin are bile pigments formed in the liver from hemoglobin breakdown.

Correct Answer: A

Rationale: Pepsin functions optimally in the highly acidic pH of the stomach (around 1.8-2).