Think you know Nutrition?

Sample Nutrition questions

These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.

1. 1 Easy

   How do industrial trans fats harm human cardiovascular health?

   Answer: They raise LDL and lower HDL

   Why: Trans fats were originally created via hydrogenation to give vegetable oils a longer shelf life and solid texture at room temperature.

2. 2 Medium

   Which common vegetable typically contains a higher concentration of beta-carotene than a carrot?

   Answer: Sweet potato

   Why: USDA figures give raw sweet potato 8,509 micrograms of beta-carotene per 100 grams, just past the raw carrot's 8,285.

3. 3 Hard

   Which organ is only 2% of body weight but uses 20% of resting energy?

   Answer: brain

   Why: Gram for gram the heart and kidneys run hotter still, at about 440 kilocalories per kilogram a day against the brain’s 240.

4. 4 Easy

   What goal led ancient cultures to ferment dairy and vegetables?

   Answer: To preserve food from spoiling

   Why: Lactic acid produced by beneficial bacteria creates an acidic environment that prevents dangerous spoilage microbes from growing.

5. 5 Medium

   How many calories of energy are provided by one single gram of dietary fat?

   Answer: Nine

   Why: Both carbohydrates and proteins yield only four calories per gram, making fat by far the most energy-dense macronutrient.

6. 6 Hard

   Which bread product typically has more sodium than an ounce of salted pretzels?

   Answer: Plain bagel

   Why: USDA figures put a plain bagel near 418 mg of sodium and an ounce of hard salted pretzels near 352 mg, since bread dough needs salt to build gluten.