1. Notes: Levels of Organization

2. 5 Levels of Organization:
Cell (bone cell)
Tissues (connective tissue)
Organs (rib)
Organ Systems (skeletal system)
Organism (human)

3. Cells
Basic unit of life
Make up all living things

4. Tissues
Group of similar cells working together to perform a particular function

5. Types of Human Tissue Connective – structure and support (bones)
Epithelial – skin and lining of major organs
Muscle – movement (biceps)
Nervous – carries messages to and from the brain (nerves)

6. Types of Plant Tissue Dermal – protection and reduce water loss
Vascular – transport water and nutrients
Ground – storage and support and where photosynthesis takes place

7. Organs
Group of tissues working together to perform a specific function
Ex. – heart, brain,
skin, leaf, stem, flower

8. Organ Systems
Group of organs working together to perform a specific function.
Allow organisms to grow, reproduce, and maintain life.

9. Human Organ Systems:
skeletal, muscular, respiratory, digestive, urinary, circulatory, immune, nervous, reproductive.

10. Plant Organ Systems: Shoot System – leaves, stems, and flowers
Root System – anchors plant and takes in water and nutrients

11. Organism
Entire living things that can carry out all basic life processes.
Made up of organ systems (some are single celled)

12. Unicellular Organisms:
Do all the things needed for their survival within one single cell
Prokaryotes – do not have a membrane bound nucleus
Eukaryotes – have a membrane bound nucleus
Examples – amoeba and algae

13. Multicellular Organisms:
Made of many eukaryotic cells working together to perform all of life’s processes
Examples – mushroom, sunflower, human