Science Multiple Choice Questions on Digestion

Which organ is primarily responsible for absorbing nutrients from food?

• Stomach

• Small intestine

• Large intestine

• Liver

What enzyme is responsible for breaking down carbohydrates in the mouth?

• Protease

• Lipase

• Amylase

• Pepsin

Which part of the digestive system produces bile?

• Pancreas

• Liver

• Gallbladder

• Small intestine

What is the function of bile in digestion?

• To break down proteins

• To neutralize stomach acid

• To emulsify fats

• To absorb water

Where does most of the water absorption in the digestive system occur?

• Stomach

• Small intestine

• Large intestine

• Esophagus

What is the purpose of the villi in the small intestine?

• To release enzymes

• To increase surface area for absorption

• To protect against harmful bacteria

• To produce bile

Which of the following is NOT a part of the digestive system?

• Esophagus

• Trachea

• Pancreas

• Stomach

What is the main function of the stomach?

• Absorbing nutrients

• Storing bile

• Mechanically and chemically digesting food

• Transporting food to the small intestine

Which nutrient is primarily broken down by the enzyme lipase?

• Proteins

• Carbohydrates

• Fats

• Vitamins

What is the name of the muscular contractions that move food through the digestive system?

• Absorption

• Peristalsis

• Segmentation

• Digestion