No, nitrogen is not present in fats and carbohydrates.
Fats, also known as lipids, are primarily composed of carbon, hydrogen, and oxygen. They consist of fatty acids and glycerol, and their chemical structures do not include nitrogen. The primary element distinguishing fats from carbohydrates is their higher proportion of hydrogen and carbon relative to oxygen.
Similarly, carbohydrates are made up of carbon, hydrogen, and oxygen, typically in a ratio of 1:2:1 (for example, glucose has the formula C6H12O6). Like fats, carbohydrates do not contain nitrogen in their chemical makeup. They serve as a primary energy source for the body and include sugars, starches, and fiber.
The presence of nitrogen is more characteristic of proteins, which are made up of amino acids that contain nitrogen in addition to carbon, hydrogen, and oxygen. Thus, while nitrogen is essential for various biological functions, it is not a component of fats and carbohydrates.