CNC Digestive Health & Gut Nutrition 1

Question 1

What is the primary site of nutrient absorption in the human digestive system?

Accepted Answer

Small intestine

Answer

The small intestine is the primary site of nutrient absorption, facilitated by villi and microvilli that greatly increase its surface area.

Question 2

Which organ is responsible for producing bile, which aids in the digestion of dietary fats?

Accepted Answer

Liver

Answer

The liver produces bile, which is then stored in the gallbladder and released into the small intestine to emulsify dietary fats for digestion.

Question 3

What term describes live microorganisms that, when consumed in adequate amounts, confer a health benefit to the host?

Accepted Answer

Probiotics

Answer

Probiotics are defined as live microorganisms that provide health benefits to the host when consumed in sufficient quantities, as established by the WHO/FAO.

Question 4

Which type of dietary fiber selectively stimulates the growth and activity of beneficial bacteria in the colon?

Accepted Answer

Prebiotic fiber

Answer

Prebiotic fiber (e.g., inulin, FOS) selectively feeds beneficial gut bacteria such as Bifidobacteria and Lactobacilli, supporting a healthy microbiome.

Question 5

Which enzyme, secreted by the stomach, begins the chemical digestion of proteins?

Accepted Answer

Pepsin

Answer

Pepsin is a protease secreted as pepsinogen by gastric chief cells; it is activated by stomach acid and initiates protein digestion.

(CNC) Certified Nutrition Coach Practice Test

(CNC) Certified Nutrition Coach Practice Test

CNC Digestive Health & Gut Nutrition 1