Organization of Life

Look at these charts.

Day 3 Organization of hierarchy


Biosphere The portion of the Earth and atmosphere where life exists The air, water, and terrestrial areas where life can exist; biomes plus atmosphere
Ecosystem The living things in an area, along with their environment The seashore including all the animals, plants, algae as well as the wind, minerals/rocks, water and weather
Community All of the populations that live in a defined area All the animals, plants, fungi and bacteria that live together in a forest
Population A group of individuals in the same species within a defined area Squirrels in your neighborhood, algae growing in a test tube
Organism A living thing (may be unicellular- see cell) Blue Whale, Mushroom, Pine Tree
Organ System A group of organs that work together to perform a function Circulatory System, Nervous System
Organ A group of different tissues that work together to perform a function Heart, Brain, Kidney, Skin
Tissue A group of cells that perform a similar function Muscle tissue, Blood
Cells The basic unit of structure and function in living things Muscle cell, E.coli bacterium
Organelle One of many cell structures that have a specialized function Nucleus, ribosome, mitochondria, chloroplasts
Macromolecule A large, complex molecule; essential molecule for life’s processes/structures Carbohydrates, Proteins
Molecule Different atoms that are chemically bonded together Water, Carbon Dioxide
Atom Basic unit of matter; building blocks of molecules Carbon, Hydrogen, or Oxygen atoms are common in living things


(charts source)