The energy yielding nutrients are

Question

BlackTom AI · Accepted Answer

Proteins, fats and carbohydrates are the macronutrients that supply usable chemical energy to the body.

1. Relevant knowledge points and concepts
- Energy-yielding nutrients (macronutrients) are those that provide calories when metabolized: carbohydrates, proteins, and fats. Typical energy values: carbohydrates ≈ 4 kcal/g, proteins ≈ 4 kcal/g, fats ≈ 9 kcal/g (alcohol yields ≈ 7 kcal/g but is not a nutrient listed in the options). Water, vitamins and minerals do not supply calories.

2. Step-by-step reasoning
- Examine each option and ask: does each component provide metabolic energy (calories)?
  - Option A: "protein, fat and water" — protein and fat yield energy, but water yields zero calories, so the group is not exclusively energy-yielding.
  - Option B: "protein, fat and carbohydrates" — all three are established macronutrients that yield energy when metabolized.
  - Option C: "water, vitamins and minerals" — none of these provide calories (water 0 kcal/g; vitamins and minerals are micronutrients and catalysts, not fuel).
  - Option D: "vitamins, minerals and fats" — only fats yield calories; vitamins and minerals do not.

3. Intermediate/calculation steps (energy values)
- Carbohydrate: ~4 kcal per gram
- Protein: ~4 kcal per gram
- Fat: ~9 kcal per gram
These numeric values confirm that proteins, fats and carbohydrates are energy sources, while water, vitamins and minerals contribute no calories.

4. Why the correct answer is correct
- Option B lists the three primary macronutrients metabolized for energy in the body. Each is digested and oxidized to release ATP and produce calories; together they constitute the energy-yielding nutrients in human nutrition.

5. Why other options are incorrect
- A: includes water, which provides no energy.
- C: contains only non-caloric components (water, vitamins, minerals).
- D: includes vitamins and minerals (non-caloric), so only one of three items yields energy.

6. Conclusion
- Therefore the correct answer is "protein, fat and carbohydrates," which matches the given answer.

The energy yielding nutrients are单项选择题

类似问题

Which of the following is a class of energy-containing nutrient found in food?

The Nutrition Facts Panel on the food label lists the following information for a 1 cup serving of macaroni and cheese: 400 calories; 10 g total protein. What percentage of the calories is provided by protein?

Comprehension-Level Multiple-Choice Items Which statement is FALSE?

位置5的问题 Which of the following is NOT an energy-producing nutrient?a. Fat b. Water c. Carbohydratesd. Protein

Consumption of which macronutrient causes a reduction in cortisol levels?

Which of the following would not result in stored energy in the body if consumed in excess?

All of the following are important sources of food energy or calories: starches, proteins, fats, vitamins.

Proteins are the most important source of food energy.

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单