Levels of Organization
The cell is the basic unit of structure and function of a living thing.
Cells are specialized by size and shape for the job they do
Single Celled Organisms (Amoeba)
Cells of Multi Cellular Organisms (Red Blood Cells)
T I S S U E S
Tissues are made of a group of similar cells that work together to do a specific job in the body.
Examples: 4 different types of animal tissues are epithelial, muscle, nervous, and connective.
Organs are made up of two or more tissues that work together to do a specific job.
Example: a heart is an organ made of all four tissues.
An organ system is a group of organs working together to perform particular jobs.
Example: Human organ systems include circulatory, reproductive, digestive, nervous, respiratory.Plant organ system-roots, stems,leaves= transport system.
A group of the same type of organisms all living together in the same place.
Populations living together in one area.
All the ecosystems around the world make up the biosphere.