LEVELS OF ORGANIZATION

1. atom

2. molecule

3. organelle

4. cell

5. tissues

6. organ system

7. organism

8. population

9. coummunity

10. ecosystem

11. biosphere

levels of organization

atoms

building blocks of all matter

molecules

building blocks of all life

organelles

Specialized, membrane-bound or non-membrane-bound subunits within a biological cell.

cells

contain the genetic material, convert nutrients into energy, and replicate independently.

tissue

organized group of similar cells that work together to perform a specific function.

Organs System

group of anatomical organs that work together to perform a specific bodily function and ensure the survival of an organism.

Organism

any individual living thing that functions as a single system.

1. organized structure

2. metabolism

3. growth

4. adaptation

5. response to stimuli

6. ability to reproduce

fundamental characteristics of life:

Population

group of individuals of the same species living in the same area at the same time.

Community

consists of all the different populations living and interacting within a particular area.

1. competition

2. mutualism

3. parasitism

relationships found in community

Ecosystem

formed when a community of living organisms interacts with the nonliving components of its environment.

Biosphere

encompasses all living organisms and all ecosystems on Earth.