metabolism
We get most of our "quick" energy from carbohydrates but also energy from proteins and fats.
Protein, fat, and carbohydrates provide energy for the body. Carbohydrates provide bodily energy the quickest. Fats/Lipids are stored as body fat for later/emergency usage. Proteins usually are used to create bones, tissue, and muscle - they don't really provide energy.
Carbohydrates, proteins and fats.
Carbohydrates
fats > proteins = carbohydrates
vitamins
There are three main nutrients that provide energy which are carbohydrates, proteins and fats. They are also called macronutrients and are needed for metabolism, growth and other body functions.
proteins, fats, carbohydrates, and water
The collective name for fats, proteins, and carbohydrates is obesity.
The three sources are carbohydrates, proteins and lipids. There are more like vitamins, minerals, and water.
The main energy sources for the body are Carbohydrates, proteins and fats. The body uses Carbohydrates more than the other two sources. The body will get energy from fats, and lastly, proteins. This is why a low carb diet will cause you to lose weight. Energy itself, is caused by the body converting carbs, fats and proteins into Glucose.
The primary function of carbohydrates is providing energy for the body. Fats and proteins also provide energy, but carbohydrates are the main source.