CNC Fundamentals of Nutrition Science 2

Question 1

Which enzyme in the small intestine is primarily responsible for breaking down sucrose into glucose and fructose?

Accepted Answer

Sucrase

Answer

Sucrase, a brush-border enzyme of the small intestine, cleaves sucrose into its monosaccharide components glucose and fructose.

Question 2

A client consumes 2,500 kcal/day with 300g carbohydrates, 80g fat, and 150g protein. What percentage of calories comes from protein?

Accepted Answer

24%

Answer

150g protein × 4 kcal/g = 600 kcal; 600 ÷ 2,500 = 24% of total calories.

Question 3

Which lipoprotein is responsible for transporting dietary fats from the intestinal mucosa to peripheral tissues via the lymphatic system?

Accepted Answer

Chylomicron

Answer

Chylomicrons are assembled in intestinal epithelial cells and enter the lymphatic system (lacteals) to transport dietary triglycerides to peripheral tissues.

Question 4

The Estimated Average Requirement (EAR) is defined as the nutrient intake that meets the needs of what percentage of healthy individuals?

Accepted Answer

50%

Answer

The EAR is the median requirement estimated to meet the needs of 50% of healthy individuals in a specific life stage and gender group.

Question 5

Which fatty acid classification describes a fat with one double bond in its carbon chain?

Accepted Answer

Monounsaturated

Answer

Monounsaturated fatty acids (MUFAs) contain exactly one carbon–carbon double bond, as seen in oleic acid found in olive oil.

(CNC) Certified Nutrition Coach Practice Test

(CNC) Certified Nutrition Coach Practice Test

CNC Fundamentals of Nutrition Science 2