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MDCAT Biology Digestion Online Test

Mustansar KhanLast Updated: June 14, 2025

MDCAT Biology Digestion Test

MDCAT Biology Digestion Chaper 14 Online Test

Total Questions:	50
Time Allowed:	25 Minutes
Total Marks:	50
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	MDCAT Entry Test Biology Online Test Interview Questions about Biology All Universities Entrance Test Recruitments Tests

MDCAT Biology Digestion MCQS Online Test

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1. Which structure absorbs water and forms feces?

Stomach

Small intestine

Pancreas

Large intestine

2. What is the name of the semi-liquid mixture of food and digestive juices in the stomach?

Feces

Bile

Mucus

Chyme

3. What type of gland is the pancreas in terms of digestion?

Endocrine gland only

Exocrine gland only

Both endocrine and exocrine

Digestive organ only

4. What is the function of the enzyme lipase?

Absorbs calcium

Digests starch

Digests protein

Digests fat

5. Which part of the digestive system is responsible for mixing food with gastric juice?

Stomach

Small intestine

Rectum

Esophagus

6. Which part of the digestive tract connects the mouth to the stomach?

Trachea

Pharynx

Esophagus

Larynx

7. Which enzyme begins the digestion of starch in the mouth?

Lipase

Pepsin

Trypsin

Amylase

8. Which hormone stimulates the release of gastric juice?

Gastrin

Secretin

Glucagon

Insulin

9. What is the term for the rhythmic contractions that move food through the digestive tract?

Peristalsis

Diffusion

Digestion

Absorption

10. Which of the following nutrients is digested mainly by enzymes from the pancreas?

Water

Fats

Vitamins

Fiber

11. Which enzyme is responsible for protein digestion in the small intestine?

Pepsin

Amylase

Trypsin

Lipase

12. Which structure connects the mouth to the esophagus?

Larynx

Trachea

Pharynx

Uvula

13. Which enzyme digests proteins in the stomach?

Lipase

Pepsin

Amylase

Maltase

14. What is the role of mucus in the digestive tract?

Lubricates and protects the lining

Absorbs nutrients

Neutralizes acid

Breaks down food

15. What substance in the stomach helps kill bacteria and activate enzymes?

Hydrochloric acid

Bile

Sodium bicarbonate

Insulin

16. What is the end product of carbohydrate digestion?

Fatty acids

Glycerol

Glucose

Amino acids

17. What is the function of the villi in the small intestine?

Produce enzymes

Move food forward

Protect the walls

Absorb nutrients

18. What is the role of the enzyme sucrase?

Breaks down starch

Breaks down protein

Converts sucrose into glucose and fructose

Emulsifies fat

19. Where is the enzyme pepsin active?

Small intestine

Large intestine

Mouth

Stomach

20. Where does most protein digestion take place?

Small intestine

Mouth

Stomach

Large intestine

21. Which part of the digestive system absorbs most of the water?

Large intestine

Stomach

Small intestine

Liver

22. Which part of the small intestine receives bile and pancreatic juice?

Ileum

Cecum

Duodenum

Jejunum

23. What is the role of the pancreas in digestion?

Mixes food mechanically

Stores bile

Absorbs nutrients

Produces digestive enzymes

24. Which of these organs detoxifies harmful substances in the body?

Liver

Pancreas

Kidney

Stomach

25. What is the function of the enzyme maltase?

Converts proteins into peptides

Breaks down lipids

Converts maltose into glucose

Emulsifies fats

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26. What type of digestion occurs in the mouth?

Mechanical and chemical

Only mechanical

Absorptive

Only chemical

27. What is the function of the rectum?

Mix food with enzymes

Produce bile

Absorb nutrients

Store feces before elimination

28. What triggers the release of bile from the gallbladder?

Presence of fats in the small intestine

Presence of starch

Acid in the stomach

High blood sugar

29. What is the main function of the stomach in digestion?

Store bile

Break down food with acid and enzymes

Produce insulin

Absorb water

30. What causes the acidic pH in the stomach?

Hydrochloric acid

Sodium bicarbonate

Gastric mucus

Bile

31. Which of the following is an accessory digestive organ?

Liver

Esophagus

Colon

Small intestine

32. Which gland produces saliva?

Parotid

Thyroid

Pituitary

Adrenal

33. Which part of the digestive system produces hydrochloric acid?

Stomach

Liver

Pancreas

Small intestine

34. What is the function of the appendix in digestion?

Absorbs water

Stores bile

Produces enzymes

No known essential function

35. Which of the following nutrients does NOT begin digestion in the mouth?

None of the above

All of the above

Proteins

Carbohydrates

36. Which vitamin is absorbed in the large intestine?

Vitamin B12

Vitamin K

Vitamin C

Vitamin D

37. Which of the following is the main site for digestion and absorption of nutrients?

Small intestine

Large intestine

Stomach

Esophagus

38. Which part of the large intestine connects to the small intestine?

Anus

Rectum

Cecum

Sigmoid colon

39. Which enzyme is secreted by the pancreas to digest proteins?

Amylase

Maltase

Trypsin

Pepsin

40. What is the role of sodium bicarbonate in digestion?

Activates enzymes

Breaks down protein

Produces bile

Neutralizes stomach acid in the small intestine

41. Which nutrient is absorbed into lacteals in the villi?

Glucose

Fatty acids

Amino acids

Vitamins

42. Which of the following structures prevents food from entering the windpipe?

Uvula

Tonsils

Larynx

Epiglottis

43. Where is bile stored before being released into the small intestine?

Pancreas

Gallbladder

Stomach

Liver

44. What is the main role of the gallbladder?

Produce insulin

Digest carbohydrates

Store and concentrate bile

Absorb nutrients

45. Which of these best describes the liver’s function in digestion?

Stores undigested food

Absorbs nutrients

Produces bile

Produces digestive enzymes

46. What is the function of bile in digestion?

Breaks proteins

Emulsifies fats

Neutralizes stomach acid

Absorbs vitamins

47. What are the finger-like projections in the small intestine called?

Rugae

Villi

Microvilli

Alveoli

48. Which organ produces insulin and digestive enzymes?

Liver

Gallbladder

Appendix

Pancreas

49. Which nutrient begins its digestion in the mouth?

Carbohydrates

Vitamins

Fats

Proteins

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Mustansar KhanLast Updated: June 14, 2025

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MDCAT Biology Digestion Online Test

MDCAT Biology Digestion Test

MDCAT Biology Digestion Chaper 14 Online Test

MDCAT Biology Digestion MCQS Online Test

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Mustansar Khan

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MDCAT Biology Digestion Test

MDCAT Biology Digestion Chaper 14 Online Test

MDCAT Biology Digestion MCQS Online Test

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Mustansar Khan

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