Gram for gram, which nutrient supplies the most energy?

FatsCorrect answerYour answerCarbohydratesCorrect answerYour answerProteinsCorrect answerYour answerVitaminsCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

Fats give about 9 kcal per gram; carbohydrates and proteins about 4 kcal per gram each.
Vitamins give no energy; they help the body use the energy-giving nutrients.

Worth noting

Carbohydrates are the body's main everyday source of energy, but fats give more energy per gram.

Ten questions from Biology, Human Body and Health, at your own pace.

Ten questions from Biology, Human Body and Health, at your own pace.

Explanation