iGCSE Biology 2e: Enzymes and digestion

The enzyme trypsin is produced in the:

• Stomach

• Pancreas

• Salivary glands

• Liver

Proteins are broken down into:

• Amino acids

• Glucose

• Fatty acids

• Glycerol

The type of enzyme responsible for the digestion of carbohydrates is:

• Carbohydrases

• Lipases

• Proteases

• Peptidases

Where fatty acids and glycerol get absorbed after the digestion of lipids is:

• Blood capillaries in the villi

• Lacteal in the villi

• Stomach

• Liver

The enzyme pepsin is produced in the:

• Small intestine

• Large intestine

• Stomach

• Pancreas

The main region for the digestion of starch is:

• Mouth

• Stomach

• Large intestine

• Small intestine

The end product of the digestion of starch is:

• Glycerol

• Glucose

• Fatty acids

• Amino acids

The purpose of the two-stage process of protein digestion is:

• To break down large protein molecules into smaller polypeptides and then into amino acids

• To activate the protease enzymes

• To neutralize the acidic chyme

• To emulsify the lipids

The enzyme responsible for the initial breakdown of proteins in the stomach is:

• Trypsin

• Pepsin

• Amylase

• Lipase

The enzyme responsible for the initial breakdown of starch in the mouth is:

• Amylase

• Maltase

• Lipase

• Pepsin