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

Feces

Bile

Mucus

Chyme

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

Absorbs nutrients

Produces bile

Stores undigested food

Produces digestive enzymes

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

Lubricates and protects the lining

Absorbs nutrients

Neutralizes acid

Breaks down food

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

Small intestine

Pancreas

Stomach

Liver

5. What is the role of the enzyme sucrase?

Emulsifies fat

Breaks down protein

Breaks down starch

Converts sucrose into glucose and fructose

6. What is the function of the enzyme lipase?

Digests fat

Absorbs calcium

Digests starch

Digests protein

7. Which structure absorbs water and forms feces?

Small intestine

Stomach

Large intestine

Pancreas

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

Liver

Pancreas

Stomach

Gallbladder

9. What is the function of bile in digestion?

Absorbs vitamins

Neutralizes stomach acid

Emulsifies fats

Breaks proteins

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

Rugae

Villi

Microvilli

Alveoli

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

Large intestine

Small intestine

Stomach

Liver

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

Mixes food mechanically

Produces digestive enzymes

Stores bile

Absorbs nutrients

13. Which vitamin is absorbed in the large intestine?

Vitamin D

Vitamin C

Vitamin K

Vitamin B12

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

Glucose

Fatty acids

Amino acids

Vitamins

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

Cecum

Jejunum

Ileum

Duodenum

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

Trypsin

Amylase

Pepsin

Maltase

17. What is the function of the enzyme maltase?

Converts proteins into peptides

Emulsifies fats

Breaks down lipids

Converts maltose into glucose

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

Tonsils

Uvula

Epiglottis

Larynx

19. What is the end product of carbohydrate digestion?

Amino acids

Glycerol

Glucose

Fatty acids

20. What is the function of the rectum?

Absorb nutrients

Mix food with enzymes

Produce bile

Store feces before elimination

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

Diffusion

Digestion

Absorption

Peristalsis

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

Cecum

Anus

Rectum

Sigmoid colon

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

Sodium bicarbonate

Insulin

Hydrochloric acid

Bile

24. Where does most protein digestion take place?

Large intestine

Stomach

Small intestine

Mouth

25. Which nutrient begins its digestion in the mouth?

Vitamins

Proteins

Carbohydrates

Fats

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

Amylase

Lipase

Pepsin

Trypsin

27. What type of digestion occurs in the mouth?

Only chemical

Absorptive

Mechanical and chemical

Only mechanical

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

Liver

Stomach

Pancreas

Kidney

29. What causes the acidic pH in the stomach?

Hydrochloric acid

Gastric mucus

Bile

Sodium bicarbonate

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

Proteins

Carbohydrates

None of the above

All of the above

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

Small intestine

Large intestine

Stomach

Esophagus

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

Amylase

Trypsin

Lipase

Pepsin

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

Store bile

Produce insulin

Break down food with acid and enzymes

Absorb water

34. Which organ produces insulin and digestive enzymes?

Gallbladder

Appendix

Liver

Pancreas

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

Endocrine gland only

Digestive organ only

Both endocrine and exocrine

Exocrine gland only

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

Small intestine

Esophagus

Stomach

Rectum

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

High blood sugar

Acid in the stomach

Presence of fats in the small intestine

Presence of starch

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

Colon

Small intestine

Liver

Esophagus

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

Absorbs water

Produces enzymes

Stores bile

No known essential function

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

Produces bile

Breaks down protein

Activates enzymes

Neutralizes stomach acid in the small intestine

41. What is the main role of the gallbladder?

Produce insulin

Store and concentrate bile

Digest carbohydrates

Absorb nutrients

42. Which structure connects the mouth to the esophagus?

Trachea

Pharynx

Larynx

Uvula

43. Which enzyme digests proteins in the stomach?

Amylase

Pepsin

Lipase

Maltase

44. Which hormone stimulates the release of gastric juice?

Glucagon

Insulin

Gastrin

Secretin

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

Trachea

Larynx

Esophagus

Pharynx

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

Absorb nutrients

Move food forward

Protect the walls

Produce enzymes

47. Which gland produces saliva?

Parotid

Adrenal

Pituitary

Thyroid

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

Vitamins

Fats

Water

Fiber

49. Where is the enzyme pepsin active?

Stomach

Large intestine

Mouth

Small intestine

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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

Uncategorized

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Mustansar Khan

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