Nutrition and Dietetics: Why Overweight Can Mean Malnourished
From calories and vitamins to tube feeding and food poisoning, the science of how food keeps the body running.
Nutrition and Dietetics · 50 questions
Try 3 questions
1. Carbohydrate and protein supply about 4 kilocalories per gram. Roughly how many does a gram of fat supply?
- About 4
- About 6
- About 9
Show the answer
Answer: About 9
Fat is the most energy-dense nutrient, more than twice carbohydrate or protein, which is why the body stores energy as fat.
2. Which of these supplies about 7 kilocalories per gram, more than sugar does?
- Dietary fiber
- Alcohol
- Plain water
Show the answer
Answer: Alcohol
Ethanol yields about 7 kcal per gram with no other nutrients, so drinks can add a surprising amount of energy.
3. Which macronutrient costs the body the most energy to digest, absorb and process?
- Protein
- Fat
- Carbohydrate
Show the answer
Answer: Protein
Protein's thermic effect is roughly 20 to 30 percent of its calories, far higher than for fat or carbohydrate, partly because of the work of handling amino acids.
The whole quiz comes before your apps
BrainTok asks a few questions like these before the apps you choose open, so your screen time turns into learning. For iPhone.
Join the beta