Question 1: Which of the following is NOT a function of the stomach?

Answer: Production of bile

Question 2: True or False: The small intestine is primarily responsible for the absorption of nutrients.

Answer: True

Question 3: What is the main role of the enzyme amylase?

Answer: Breaks down starch into sugars

Question 4: True or False: The large intestine is where the majority of digestion occurs.

Answer: False

Question 5: Describe the role of the liver in digestion.

Answer: The liver produces bile which aids in the digestion and absorption of fats.

Question 6: Explain how the structure of the villi in the small intestine is related to their function.

Answer: Villi increase the surface area of the small intestine, allowing for more efficient absorption of nutrients.

Question 7: Calculate the energy content of a meal containing 20g of carbohydrates, 10g of proteins, and 5g of fats. Use the formula: Carbohydrates = 4 kcal/g, Proteins = 4 kcal/g, Fats = 9 kcal/g.

Answer: 205 kcal

Question 8: Match the following digestive organs to their functions:

Answer: See full answer key

Question 9: Place the following steps of digestion in the correct order:

Answer: See full answer key

Question 10: The enzyme responsible for breaking down proteins is called ______.

Answer: pepsin

Question 11: Discuss the process of chemical digestion in the human digestive system. Include the roles of key enzymes.

Answer: Chemical digestion involves breaking down food into simpler nutrients by enzymes. In the mouth, amylase in saliva breaks down starches. In the stomach, pepsin breaks down proteins. The pancreas produces enzymes like trypsin for proteins and lipase for fats, which act in the small intestine. The small intestine also produces enzymes to complete carbohydrate digestion.