There are six biological levels. The order of the biological levels from the largest to the smallest includes atom, molecule, organelles, cell, tissue, organ, organ system, organism, species, population, community, ecosystem, to biosphere.
There are 13 layers in the biological organization. From smallest to largest, they are the atom, molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem, biome, and biosphere.
First of all what is a biological molecule? Its a group of substances that make up and helps with proper functioning of a living organism. There are several different types of biological molecules: - Carbohydrates - Proteins - Salts - Lipids -etc.
The biological significance of a DNA molecule is that it: 1) Controls the synthesis of proteins (as well as enzymes because they are also proteins). 2) Is responsible for carrying hereditary characteristics.