Practice Test GeeksACBN - Nutritionist Exam Practice Test
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  1. Which lipoprotein is primarily responsible for transporting cholesterol from the liver to peripheral tissues?

    Answer: LDL

    LDL (low-density lipoprotein) transports cholesterol from the liver to peripheral tissues and is the primary carrier of cholesterol in circulation.

  2. A patient with chronic kidney disease stage 4 should typically restrict which nutrient to slow disease progression?

    Answer: Protein

    Protein restriction in CKD stage 4 reduces the nitrogen load on failing kidneys and can slow the rate of GFR decline.

  3. The body mass index (BMI) threshold for obesity classification in adults according to standard clinical guidelines is:

    Answer: BMI ≥ 30 kg/m²

    A BMI of 30 kg/m² or greater is classified as obesity (Class I), while 25-29.9 is overweight, according to WHO and CDC guidelines.

  4. Which vitamin functions as a coenzyme in over 100 enzymatic reactions and is crucial for amino acid metabolism and neurotransmitter synthesis?

    Answer: Vitamin B6 (Pyridoxine)

    Vitamin B6 (pyridoxine), as pyridoxal phosphate (PLP), is a coenzyme in over 100 enzymatic reactions, particularly transamination and decarboxylation in amino acid metabolism.

  5. The Mifflin-St Jeor equation is primarily used to estimate which component of energy expenditure?

    Answer: Resting metabolic rate (RMR)

    The Mifflin-St Jeor equation estimates resting metabolic rate using body weight, height, age, and sex, and is considered one of the most accurate predictive equations for RMR.

  6. In the context of enteral nutrition, a gastric residual volume (GRV) above what threshold typically prompts clinical reassessment for aspiration risk?

    Answer: 200-250 mL

    A gastric residual volume above 200-250 mL is generally the clinical threshold that prompts reassessment of enteral feeding tolerance and aspiration risk.

  7. Which sugar alcohol is most commonly associated with a significant laxative effect due to its incomplete absorption in the small intestine?

    Answer: Sorbitol

    Sorbitol is poorly absorbed in the small intestine and is fermented by colonic bacteria, causing osmotic diarrhea and bloating at moderate to high intakes.