1.The process of breaking down food into simpler substances is called:
A) Respiration
B) Digestion
C) Circulation
D) Excretion
Answer: B) Digestion
2. The digestion of starch begins in the:
A) Stomach
B) Small intestine
C) Mouth
D) Large intestine
Answer: C) Mouth
3. The enzyme present in saliva is:
A) Pepsin
B) Trypsin
C) Amylase
D) Lipase
Answer: C) Amylase
4. The organ that stores bile is:
A) Liver
B) Pancreas
C) Gallbladder
D) Kidney
Answer: C) Gallbladder
5. The largest gland in the human body is the:
A) Pancreas
B) Liver
C) Salivary gland
D) Thyroid
Answer: B) Liver
6. Protein digestion begins in the:
A) Mouth
B) Stomach
C) Small intestine
D) Large intestine
Answer: B) Stomach
7. The enzyme that digests proteins in the stomach is:
A) Amylase
B) Pepsin
C) Lipase
D) Maltase
Answer: B) Pepsin
8. The small intestine is mainly responsible for:
A) Absorption of nutrients
B) Storage of food
C) Chewing
D) Excretion
Answer: A) Absorption of nutrients
9. The finger-like projections in the small intestine are called:
A) Alveoli
B) Nephrons
C) Villi
D) Capillaries
Answer: C) Villi
10. Bile helps in the digestion of:
A) Proteins
B) Carbohydrates
C) Fats
D) Vitamins
Answer: C) Fats
11. The tube connecting mouth to stomach is called:
A) Trachea
B) Esophagus
C) Urethra
D) Bronchus
Answer: B) Esophagus
12. The wave-like movement that pushes food forward is called:
A) Diffusion
B) Osmosis
C) Peristalsis
D) Respiration
Answer: C) Peristalsis
13. The acidic substance present in the stomach is:
A) Nitric acid
B) Sulfuric acid
C) Hydrochloric acid
D) Carbonic acid
Answer: C) Hydrochloric acid
14. The end product of protein digestion is:
A) Fatty acids
B) Amino acids
C) Glucose
D) Glycerol
Answer: B) Amino acids
15. The end product of carbohydrate digestion is:
A) Glucose
B) Amino acids
C) Fatty acids
D) Peptides
Answer: A) Glucose
16. The pancreas produces:
A) Bile
B) Insulin only
C) Digestive enzymes
D) Saliva
Answer: C) Digestive enzymes
17. The large intestine mainly absorbs:
A) Proteins
B) Fats
C) Water
D) Glucose
Answer: C) Water
18. The first part of the small intestine is called:
A) Ileum
B) Colon
C) Duodenum
D) Rectum
Answer: C) Duodenum
19. The chewing of food is known as:
A) Deglutition
B) Mastication
C) Ingestion
D) Egestion
Answer: B) Mastication
20. The removal of undigested waste from the body is called:
A) Ingestion
B) Digestion
C) Absorption
D) Egestion
Answer: D) Egestion
21. The enzyme that digests fats is:
A) Amylase
B) Lipase
C) Pepsin
D) Trypsin
Answer: B) Lipase
22. The semi-liquid food formed in the stomach is called:
A) Bolus
B) Chyme
C) Plasma
D) Serum
Answer: B) Chyme
23. The flap that prevents food from entering the windpipe is:
A) Diaphragm
B) Epiglottis
C) Larynx
D) Pharynx
Answer: B) Epiglottis
24. The colon is part of the:
A) Small intestine
B) Stomach
C) Large intestine
D) Liver
Answer: C) Large intestine
25. Which vitamin is produced by bacteria in the large intestine?
A) Vitamin A
B) Vitamin C
C) Vitamin K
D) Vitamin D
Answer: C) Vitamin K
26. The function of teeth is mainly:
A) Absorption
B) Grinding food
C) Secretion
D) Filtration
Answer: B) Grinding food
27. The appendix is attached to the:
A) Ileum
B) Colon
C) Cecum
D) Rectum
Answer: C) Cecum
28. Gastric juice is secreted by glands in the:
A) Mouth
B) Liver
C) Stomach
D) Pancreas
Answer: C) Stomach
29. The process of taking food into the body is called:
A) Ingestion
B) Egestion
C) Absorption
D) Assimilation
Answer: A) Ingestion
30. The final opening of the digestive tract is the:
A) Rectum
B) Anus
C) Colon
D) Duodenum
Answer: B) Anus