ACBN Nutritionist MCQ 4

Question 1

Which hormone primarily regulates long-term energy balance by signaling satiety to the hypothalamus?

Accepted Answer

Leptin

Answer

Leptin, secreted by adipose tissue, signals the hypothalamus to suppress appetite and increase energy expenditure.

Question 2

What is the primary site of vitamin B12 absorption in the gastrointestinal tract?

Accepted Answer

Terminal ileum

Answer

Vitamin B12 bound to intrinsic factor is absorbed via specific receptors in the terminal ileum.

Question 3

According to the Dietary Guidelines for Americans, added sugars should be limited to less than what percentage of total daily calories?

Accepted Answer

10%

Answer

The Dietary Guidelines for Americans recommend limiting added sugars to less than 10% of total daily caloric intake.

Question 4

A client's 24-hour dietary recall reveals very low riboflavin intake. Which symptom would you expect to observe?

Accepted Answer

Angular stomatitis and glossitis

Answer

Riboflavin (B2) deficiency presents as ariboflavinosis, characterized by angular stomatitis, cheilosis, and a magenta-colored glossitis.

Question 5

Which protein quality assessment method accounts for digestibility AND amino acid score, and is used for evaluating protein in foods for humans?

Accepted Answer

PDCAAS (Protein Digestibility-Corrected Amino Acid Score)

Answer

PDCAAS is the FAO/WHO-recommended method that corrects the amino acid score by the true fecal digestibility of the protein.

ACBN - Nutritionist Exam Practice Test