I believe it is both because they do not provide energy themselves but they help by turning protein and carbohydrates into fuel so that the human body can use it! Usually food that have a high amount of vitamins and minerals in it can make you full of energy!! Hope that helps!
The complete DNA instruction book, or genome, for a human contains about 3 billion bases and about 20,000 genes on 23 pairs of chromosomes
Because carbon atoms can form stable bonds with four other atoms, they are uniquely suited for the construction of complex molecules. These complex molecules are typically made up of chains and rings that contain hydrogen, oxygen, and nitrogen atoms, as well as carbon atoms.
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
The gene is the basic physical and functional unit of heredity. It consists of a specific sequence of nucleotides at a given position on a given chromosome that codes for a specific protein (or, in some cases, an RNA molecule).
Starving yourself will make you lose weight but will also cause bad health. The best diet to lose weight is to drink lots of water and eat fruit. +exercise