Answer:
The atom is the smallest and most fundamental unit of matter. The bonding of at least two atoms or more form molecules.
The simplest level of organization for living things is a single organelle, which is composed of aggregates of macromolecules.
The highest level of organization for living things is the biosphere; it encompasses all other levels.
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
Key Terms
molecule: The smallest particle of a specific compound that retains the chemical properties of that compound; two or more atoms held together by chemical bonds.
macromolecule: a very large molecule, especially used in reference to large biological polymers (e.g. nucleic acids and proteins)
polymerization: The chemical process, normally with the aid of a catalyst, to form a polymer by bonding together multiple identical units (monomers).
