Transcript 1 Hierarchy Notes
How are living things organized? There are various levels of organization: Let’s start small and get bigger. 1) Atoms Atoms are the smallest unit of matter that have the chemical properties of a particular element. Examples: Carbon, Hydrogen, Oxygen… 2) Molecules Molecules that are the small building blocks from which larger molecules are made. Examples: Glucose Amino Acid Water 3) Macromolecules Large molecules consisting of many subunits. Examples: Protein Cellulose 4) Organelles Specialized structures inside of a cell. Examples: Mitochondria Cell Membrane 5) Cells The smallest unit of biological organization that biologists consider alive. Example: 6) Tissue A group of distinct and similar cells that carry out a specific set of functions. Examples: Muscle Skin 7) Organ Groups of tissues organized together to carry out a particular set of functions. Examples: Brain Stomach 8) Organ System Groups of organs that function together to carry out broad sets of functions. Example: 9) Organism (or individual) Individual that has its own distinct existence as a complex, reproducing unit. Examples: 10) Population Group of freely interacting and breeding individuals of the same species. Examples: School of fish Herd of Zebra 11) Community Populations of different species living and interacting together in a distinct area. Example: Marine community 12) Ecosystem Distinguishable groups of species and the abiotic (non-living) components of the environment with which the living creatures interact. Examples: 13.) Biome Geographically defined area based on climate and environmental conditions. 14.) Biosphere I’m sure you can figure this one out!