Question

If one gram of each of the following were eaten as food, identify which would yield the most energy within the cell.

Answer 1

If you are referring to carbohydrates, protein & fats, then fats will yield the most energy per gram within the cell.

Carbohydrates are the most readily available, but fats are like concentrated carbs.

Protein is not an efficient energy source because it yields unfavorable byproducts, like ammonia, which can be toxic in large amounts.

Hope this helps!

Answer 2

Answer & explanation:

When we refer to macronutrients, we talk about proteins, carbohydrates and lipids.

In a meal, carbohydrates are usually in greater quantity than proteins and fats, and are primarily used as fuel for metabolic processes.

Carbohydrates have on average 4 kcal per gram (or 17 kJ/g), proteins also have 4 kcal/g, but fats are approximately 9 kcal per gram (or 37 kJ/g).

Thus, fats have a higher energy charge compared to proteins and carbohydrates, although they are not primarily used as cellular fuel.