Practice Test Geeks(IIN) Institute for Integrative Nutrition Certification Practice Test
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Nutrition Science Flashcards

7 cards from real IIN practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Nutrition Science flashcards as text

  1. Which antioxidant vitamin is primarily found in citrus fruits and is water-soluble?

    Answer: Vitamin C

    Vitamin C (ascorbic acid) is a water-soluble antioxidant abundant in citrus fruits, essential for collagen synthesis and immune function.

  2. The concept of 'leaky gut' (intestinal permeability) refers to:

    Answer: Breakdown of tight junctions allowing undigested particles into the bloodstream

    Increased intestinal permeability occurs when tight junction proteins between enterocytes degrade, allowing toxins and antigens to enter systemic circulation.

  3. In the context of IIN coaching, 'primary food' refers to:

    Answer: Life areas like relationships, career, and spirituality that nourish us beyond food

    IIN defines primary food as the non-dietary aspects of life — relationships, career, physical activity, and spirituality — that profoundly affect overall health.

  4. Which B vitamin is critical for DNA synthesis and is especially important during pregnancy to prevent neural tube defects?

    Answer: Folate (B9)

    Folate is essential for nucleotide synthesis and cell division; adequate intake before and during early pregnancy prevents neural tube defects like spina bifida.

  5. What does 'nutrient density' mean when evaluating foods?

    Answer: The amount of beneficial nutrients a food provides relative to its calorie content

    Nutrient-dense foods provide substantial vitamins, minerals, and other beneficial compounds relative to the calories they contain.

  6. Which organ is primarily responsible for detoxifying harmful substances and metabolizing nutrients absorbed from the gut?

    Answer: Liver

    The liver is the primary site of detoxification, nutrient metabolism, bile production, and processing of substances absorbed from the portal circulation.

  7. Magnesium is involved in over 300 enzymatic reactions; which function is among the most well-known?

    Answer: Supporting muscle relaxation and nerve function

    Magnesium is essential for muscle relaxation, nerve signal transmission, and ATP energy production, making it critical for neuromuscular function.