Dona is interested in cutting back on her calorie intake. which nutrient offers the highest number of calories per gram?

1. fat 2. carbs 3. protein 4. vitamins

The correct answer will be option- Fats

Explanation:

The cellular respiration can produce energy from the three substrates:  Carbohydrates, proteins and Fat, the most favoured of which is Carbohydrates.

The Carbohydrates on oxidation produces 4 calories per gram, proteins also produce 4 calories per gram whereas Fats produces 9 calories per gram.

The Fats produces the highest amount of energy as fats require more oxidation to release water and carbon dioxide as compared to Carbohydrates.

Since fats provide the highest amount of energy, therefore, option- fat is the correct answer.

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lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation: