Carbohydrates are an excellent source of energy for the body. if a candy bar and a pear contain an equal number of calories from carbohydrates, which is a healthier food and why?

The pear is healthy because it contains more vitamins, minerals and fiber. Carbohydrates are the main source of energy in human diet. All the body cells depend on glucose which makes it the preferred source of energy. The brain and the nervous system for example run directly off glucose. The body can convert protein to glucose during the low supply of glucose in the body.

Hmmm i'm not sure about this one

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask