CCS Nutrition & Health 3

Question 1

According to US dietary guidelines, which macronutrient should provide the largest percentage of total daily calories?

Accepted Answer

Carbohydrates

Answer

The 2020–2025 Dietary Guidelines for Americans recommend that carbohydrates provide 45–65% of total daily caloric intake, making them the primary energy source.

Question 2

Which cooking method best preserves water-soluble vitamins such as vitamin C and B vitamins?

Accepted Answer

Steaming

Answer

Steaming minimizes vitamin leaching into cooking water and uses lower contact time, better preserving water-soluble vitamins compared to boiling.

Question 3

Phytosterols are recognized as functional food ingredients primarily because they help lower which health risk marker?

Accepted Answer

LDL cholesterol

Answer

Phytosterols compete with dietary cholesterol for intestinal absorption, effectively lowering LDL cholesterol levels by 5–15%.

Question 4

Which statement best describes the glycemic index (GI) of a food?

Accepted Answer

The rate at which a food raises blood glucose relative to a reference food

Answer

GI measures how quickly a carbohydrate-containing food raises blood glucose levels compared to a reference food (glucose or white bread = 100).

Question 5

In the context of protein nutrition, what does 'biological value' (BV) measure?

Accepted Answer

The proportion of absorbed protein nitrogen retained for body protein synthesis

Answer

Biological value (BV) reflects the efficiency with which absorbed protein is utilized for body protein synthesis, with eggs traditionally assigned a BV of 100.

(CCS) Certified Culinary Scientist Practice Test

(CCS) Certified Culinary Scientist Practice Test

CCS Nutrition & Health 3