Question 1: What is the primary function of the stomach in the digestive system?

Answer: To break down food using acid and enzymes

Question 2: True or False: The pancreas produces bile.

Answer: False

Question 3: True or False: The large intestine is primarily involved in water absorption.

Answer: True

Question 4: Describe the role of the small intestine in digestion.

Answer: The small intestine is responsible for the majority of nutrient absorption.

Question 5: Explain how enzymes facilitate digestion in the human body.

Answer: Enzymes break down complex molecules like proteins, carbohydrates, and fats into simpler molecules that can be absorbed.

Question 6: Match the following terms to their definitions:

Answer: See full answer key

Question 7: Order the steps of the digestive process from ingestion to excretion:

Answer: See full answer key

Question 8: Fill in the blank: ________ is the enzyme responsible for breaking down proteins in the stomach.

Answer: Pepsin

Question 9: Calculate the energy content (in kilojoules) of a food item containing 10g of protein, 5g of carbohydrate, and 2g of fat. Use the formula: Energy = (Protein x 17) + (Carbohydrates x 17) + (Fat x 37).

Answer: 374 kJ

Question 10: Discuss how the structure of the villi in the small intestine aids in the process of nutrient absorption.

Answer: Villi are small, finger-like projections that increase the surface area of the small intestine. This large surface area enhances nutrient absorption. Each villus contains blood vessels that help transport absorbed nutrients into the bloodstream.

Question 11: What is the role of hydrochloric acid in the stomach?

Answer: Hydrochloric acid helps to break down food and kill bacteria.

Question 12: Multiple choice question text...

Answer: Correct Answer

Question 13: Multiple choice question text...

Answer: Correct Answer