ACF Nutrition Principles 4

Question 1

Which vitamin acts as an antioxidant and is critical for collagen synthesis?

Accepted Answer

Vitamin C

Answer

Vitamin C (ascorbic acid) donates electrons to neutralize free radicals and is a required cofactor for prolyl and lysyl hydroxylases in collagen synthesis.

Question 2

In the context of protein quality, which scoring method accounts for digestibility corrections?

Accepted Answer

PDCAAS

Answer

The Protein Digestibility Corrected Amino Acid Score (PDCAAS) multiplies the amino acid score by true fecal digestibility to assess protein quality.

Question 3

Which type of dietary fat is formed during partial hydrogenation of vegetable oils and is considered most harmful to cardiovascular health?

Accepted Answer

Industrially produced trans fat

Answer

Industrially produced trans fats raise LDL and lower HDL cholesterol simultaneously, making them uniquely harmful to heart health.

Question 4

What is the recommended daily intake of sodium for the general adult US population according to the Dietary Guidelines for Americans?

Accepted Answer

Less than 2,300 mg/day

Answer

The Dietary Guidelines for Americans recommend limiting sodium to less than 2,300 mg per day, roughly equivalent to 1 teaspoon of table salt.

Question 5

Which hormone signals satiety to the brain by reducing appetite after a meal?

Accepted Answer

Leptin and GLP-1

Answer

Leptin (from adipose tissue) and GLP-1 (from intestinal L-cells) are key satiety signals that reduce hunger and food intake after eating.

(ACF) American Culinary Federation Certification Practice Test

(ACF) American Culinary Federation Certification Practice Test

ACF Nutrition Principles 4