The primary function of the mouth in the digestive system is …

• Absorb nutrients

• Mechanically break down food

• Regulate digestive enzymes

• Store food before digestion

The enzyme amylase found in saliva functions to …

• Break down proteins into amino acids

• Break down fats into fatty acids and glycerol

• Break down carbohydrates into simple sugars

• Break down vitamins into simple compounds

Digestion that occurs in the stomach involves the enzymes …

• Amylase and lipase

• Pepsin and rennin

• Trypsin and maltase

• Lipase and lactase

The final product of carbohydrate digestion in the human body is …

• Amino acids

• Glucose

• Glycerol

• Fatty acids

The organ that absorbs nutrients from digested food is …

• Stomach

• Large intestine

• Small intestine

• Pancreas

Bile produced by the liver functions to …

• Break down proteins

• Emulsify fats

• Neutralize stomach acid

• Convert starch into glucose

The process of putrefaction of food residues occurs in the …

• Stomach

• Small intestine

• Large intestine

• Anus

The enzyme lipase functions to break down …

• Carbohydrates into glucose

• Proteins into peptides

• Fats into fatty acids and glycerol

• Vitamins into simple compounds

The nutrient that is first chemically digested in the mouth is …

• Protein

• Fat

• Carbohydrate

• Vitamin

The absorption of water and the putrefaction of food residues are carried out by the …

• Small intestine

• Large intestine

• Stomach

• Pancreas