Nutrition and Dietetics: Macronutrients and energy balance — Carbohydrates, Proteins and Fats
How carbohydrates, proteins and fats are built, digested, stored and turned into energy by the body.
Nutrition and Dietetics · 27 questions
Try 3 questions
1. Roughly how much energy does one gram of dietary fat provide?
- About 7 kcal
- About 4 kcal
- About 9 kcal
Show the answer
Answer: About 9 kcal
Fat yields about 9 kcal per gram, more than twice the roughly 4 kcal of carbohydrate or protein; about 7 kcal is the figure for alcohol.
2. A drink contains 14 g of pure alcohol. About how many kilocalories does the alcohol alone supply?
- About 126 kcal
- About 100 kcal
- About 56 kcal
Show the answer
Answer: About 100 kcal
Alcohol provides about 7 kcal per gram, so 14 g gives roughly 98 kcal before counting any sugar in the drink.
3. Under normal eating conditions, what is the brain's main fuel?
- Amino acids from protein
- Glucose from carbohydrate
- Fatty acids from stored fat
Show the answer
Answer: Glucose from carbohydrate
The brain relies almost entirely on glucose when food is available, because fatty acids barely cross the blood-brain barrier.
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