Sample Questions and Answers
- Which of the following is the main function of the digestive system?
- A) To produce hormones
- B) To break down food into nutrients
- C) To circulate oxygen throughout the body
- D) To regulate body temperature
- Answer: B) To break down food into nutrients
- Where does digestion begin?
- A) Stomach
- B) Small intestine
- C) Mouth
- D) Large intestine
- Answer: C) Mouth
- Which enzyme is responsible for breaking down starches in the mouth?
- A) Pepsin
- B) Amylase
- C) Lipase
- D) Trypsin
- Answer: B) Amylase
- What is the primary role of the stomach in digestion?
- A) To absorb nutrients
- B) To produce digestive enzymes
- C) To mechanically and chemically break down food
- D) To store food
- Answer: C) To mechanically and chemically break down food
- Which part of the digestive system absorbs most nutrients?
- A) Esophagus
- B) Stomach
- C) Large intestine
- D) Small intestine
- Answer: D) Small intestine
- The process of moving food through the digestive system is called:
- A) Peristalsis
- B) Absorption
- C) Secretion
- D) Mastication
- Answer: A) Peristalsis
- What is the function of bile in digestion?
- A) Breaks down carbohydrates
- B) Neutralizes stomach acid
- C) Emulsifies fats
- D) Absorbs vitamins
- Answer: C) Emulsifies fats
- The pancreas produces enzymes that help in the digestion of:
- A) Proteins and fats only
- B) Carbohydrates and fats only
- C) Proteins, carbohydrates, and fats
- D) Vitamins and minerals
- Answer: C) Proteins, carbohydrates, and fats
- The villi in the small intestine are responsible for:
- A) Secreting digestive enzymes
- B) Absorbing nutrients into the bloodstream
- C) Producing bile
- D) Breaking down proteins
- Answer: B) Absorbing nutrients into the bloodstream
- Which structure prevents food from entering the trachea during swallowing?
- A) Epiglottis
- B) Uvula
- C) Pyloric sphincter
- D) Gallbladder
- Answer: A) Epiglottis
- What is the main function of the large intestine?
- A) To digest proteins
- B) To absorb nutrients and water
- C) To store bile
- D) To store feces
- Answer: B) To absorb nutrients and water
- The enzyme pepsin is most active in which part of the digestive system?
- A) Small intestine
- B) Stomach
- C) Mouth
- D) Pancreas
- Answer: B) Stomach
- Which of the following structures stores bile produced by the liver?
- A) Gallbladder
- B) Duodenum
- C) Pancreas
- D) Colon
- Answer: A) Gallbladder
- What is the function of the salivary glands?
- A) To absorb nutrients
- B) To produce digestive enzymes and saliva
- C) To neutralize stomach acid
- D) To produce bile
- Answer: B) To produce digestive enzymes and saliva
- Which of the following is a part of the large intestine?
- A) Duodenum
- B) Ileum
- C) Cecum
- D) Jejunum
- Answer: C) Cecum
- Which of the following is a function of the liver in digestion?
- A) To store glucose as glycogen
- B) To secrete enzymes that digest proteins
- C) To absorb nutrients from food
- D) To break down lipids in the stomach
- Answer: A) To store glucose as glycogen
- Which of the following is absorbed in the stomach?
- A) Proteins
- B) Alcohol
- C) Vitamins
- D) Carbohydrates
- Answer: B) Alcohol
- Which type of muscle tissue is responsible for peristalsis in the digestive tract?
- A) Skeletal muscle
- B) Smooth muscle
- C) Cardiac muscle
- D) Epithelial tissue
- Answer: B) Smooth muscle
- Which of the following is the primary carbohydrate absorbed in the small intestine?
- A) Fructose
- B) Glucose
- C) Sucrose
- D) Lactose
- Answer: B) Glucose
- What is the role of the gastric acid in the stomach?
- A) To digest fats
- B) To neutralize bile
- C) To activate pepsin and break down proteins
- D) To absorb nutrients
- Answer: C) To activate pepsin and break down proteins
- Which of the following is responsible for the production of insulin?
- A) Stomach
- B) Pancreas
- C) Liver
- D) Gallbladder
- Answer: B) Pancreas
- Which of the following is the longest part of the digestive tract?
- A) Large intestine
- B) Small intestine
- C) Stomach
- D) Esophagus
- Answer: B) Small intestine
- The process of breaking down food into smaller components is called:
- A) Digestion
- B) Ingestion
- C) Absorption
- D) Excretion
- Answer: A) Digestion
- Which enzyme is responsible for the breakdown of proteins in the stomach?
- A) Amylase
- B) Lipase
- C) Pepsin
- D) Lactase
- Answer: C) Pepsin
- The pyloric sphincter controls the movement of food from the:
- A) Stomach to the small intestine
- B) Small intestine to the large intestine
- C) Esophagus to the stomach
- D) Rectum to the anus
- Answer: A) Stomach to the small intestine
- Which of the following is absorbed in the small intestine?
- A) Alcohol
- B) Water
- C) Amino acids, fatty acids, and sugars
- D) Bile
- Answer: C) Amino acids, fatty acids, and sugars
- The process by which nutrients are absorbed into the bloodstream is called:
- A) Digestion
- B) Peristalsis
- C) Absorption
- D) Secretion
- Answer: C) Absorption
- The appendix is a vestigial structure located in which part of the digestive system?
- A) Small intestine
- B) Stomach
- C) Large intestine
- D) Pancreas
- Answer: C) Large intestine
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