Quiz on the Digestive System

What is the process of breaking down food into smaller molecules called?

• Ingestion

• Digestion

• Assimilation

• Absorption

Which organ is primarily responsible for the absorption of nutrients?

• Large intestine

• Stomach

• Esophagus

• Small intestine

What is the function of saliva in the digestive process?

• Moistens food

• Breaks down proteins

• Eliminates waste

• Absorbs nutrients

What type of digestion occurs in the mouth?

• Neither mechanical nor chemical

• Chemical only

• Both mechanical and chemical

• Mechanical only

Which of the following is NOT an accessory organ of digestion?

• Liver

• Pancreas

• Gallbladder

• Stomach

What is the main function of the stomach?

• Secretion of enzymes

• Absorption of nutrients

• Storage of food

• Production of bile

What is peristalsis?

• The breakdown of food

• Wave-like muscle contractions

• The secretion of enzymes

• The absorption of nutrients

Which enzyme begins the digestion of carbohydrates in the mouth?

• Pepsin

• Trypsin

• Lipase

• Amylase

What is the role of the pancreas in digestion?

• Absorbs nutrients

• Secretes bile

• Produces saliva

• Secretes digestive enzymes

What is the final product of protein digestion?

• Glucose

• Fatty acids

• Disaccharides

• Amino acids