Digestion in the Stomach Quiz

Which class of food is primarily digested in the stomach?

• Carbohydrates

• Proteins

• Vitamins

• Fats

What is the name of the enzyme that digests proteins in the stomach?

• Amylase

• Lipase

• Lactase

• Protease

Where does the second step of protein digestion occur?

• Small intestine

• Large intestine

• Esophagus

• Stomach

Which organ produces protease for the small intestine?

• Liver

• Stomach

• Pancreas

• Gallbladder

What is the final product of protein digestion?

• Polypeptides

• Amino acids

• Fatty acids

• Glucose

What is the main function of hydrochloric acid in the stomach?

• Neutralize stomach contents

• Provide an acidic environment for enzymes

• Digest carbohydrates

• Absorb nutrients

Which statement about gastric juice is true?

• It contains bile

• It is produced in the pancreas

• It contains hydrochloric acid and protease

• It digests carbohydrates

What is the pH level at which protease works best in the stomach?

• Neutral

• Basic

• Acidic, around pH 2

• Alkaline

What is the role of stomach muscles during digestion?

• To neutralize acids

• To absorb nutrients

• To contract and relax, mixing food with gastric juices

• To produce enzymes

How does breaking food into smaller pieces aid digestion?

• Decreases surface area

• Reduces enzyme activity

• Increases surface area to volume ratio

• Slows down digestion