Test - Digestive System

Question 1

13. What is something which is not a a nutrient?

Answer 1

Enzymes

NB74

Question 2

32. What makes up half the different proteins in your body?

Answer 2

Amino acids

NB74

Question 3

35. Where does bacteria make vitamin K?

Answer 3

Large Intestines

NB72

Question 4

36. What type of digestion is it in the process of breakdown of complex food molecules into simpler ones?

Answer 4

Chemical

NB76

Question 5

41. What is the process when food is pushed through the esophagus to the stomach by the waves of the muscle contraction known as absorption?

Answer 5

Peristalsis

NB72

Question 6

43. What are Villi?

Answer 6

Nutrients molecules that pass into cells on the surface of a villus and from there into blood vessels. The villi provide a large surface area for absorption.
NB75

Question 7

46. Could the duodenum function without the pancreas?

Answer 7

No because with out the enzymes, chemical digestion could not be completed, so the duodenum (small intestines), would be unable to absorb small nutrient molecules into the blood stream.
NB72

Question 8

47. What is the name of the organ in which foo is absorbed?

Answer 8

Small intestines

NB72

Question 9

55. Explain how the mouth helps to digest food.

Answer 9

Mechanical digestion - Incisors cut and tear and Canines cut foo into smaller pieces. The molars crush and grind food. Chemical digestion - Saliva contains an enzyme salivary amylase that chemically breaks done starches into smaller molecules called maltose. The younger mixes and positions the food for swallowing.
NB72