1. LEVELS OF ORGANIZATION
What is a cell?
Basic unit of structure and function in organisms.
unicellular (made of one cell): bacteria and protists
multicellular (made of many cells): fungi, plants, animals
Multicellular organisms exhibit cell specialization and take on specific jobs and look different from each other
The cells exhibit division of labor and split up the work of the organism.
What are tissues?
Groups of similar cells that work together to perform a specific function.
4 major tissue types in animals
Epithelial tissue
Connective tissue
Muscle tissue
Nervous tissue

2. Draw in your notes

4. What are organs?
structures made of different types of tissues that work together to perform a specific function.
Examples:
Heart
Lungs
Small intestine
Plant Roots
Plant Stems
Plant Leaves
What is an
organ system?
Groups of organs that work together to perform a specific function.
Examples:
Digestive system
Vascular system in plants
A complete, individual living thing.
Examples:
A single person
A single plant
A single bacteria
What is an organism?