Levels of Organization

Atom• Smallest unit of

Matter

• Made of Protons, Neutrons, and Electrons

• Examples:– Carbon Atom

– Oxygen Atom

– Nitrogen Atom

• NONLIVING

Molecule• Smallest unit of a

substance that retains its original properties

• Made of multiple atoms of the same element or different elements

• Examples: – Carbon Dioxide

– Caffeine

– Carbohydrates

• NONLIVING

Video

• Atoms, Elements, & Compounds

– https://www.youtube.com/watch?v=VOQzWLeZoEc

Organelle

• A cell structure with a specific job

• Made of compounds such as Carbohydrates, Lipids, Proteins, and Nucleic Acids

• Examples: – Ribosome– Chloroplast– Mitochondria

• NONLIVING

Cell• The SMALLEST thing that

meets ALL of the Characteristics of Life; performs all functions of life

• Made of Organelles and Molecules

• Examples:– Plant Cell

– Animal Cell

– Bacterial Cell

• LIVING

Video

• Introduction to Cells

– https://www.youtube.com/watch?v=gFuEo2ccTPA

Tissue• A group of cells that

work together to perform a common function

• Made of cells and cell products (proteins, etc.)

• Examples:

– Connective Tissue

– Muscle Tissue

– Nervous Tissue

• LIVING

Organ• A group of tissues

working together to perform a common function

• Made of 1 or more types of tissue

• Examples:– Heart

– Liver

– Skin

• LIVING

Organ System• A group of Organs

working together to perform a common function

• Made of Organs &Tissues

• Examples

– Digestive System

– Cardiovascular System

– Skeletal System

• LIVING

Multicellular Organism• A living thing made of many cells

which are specialized to perform different functions necessary for the organism to live

• Made of Cells, Tissues, Organs, & Organ Systems

• Examples:

– Grasshopper

– Human

– Starfish

• LIVING!!!

PLANTS HAVE THESE TOO!

Video

• Cells, Tissues, Organs, & Organ Systems

– https://www.youtube.com/watch?v=ZRFykdf4kDc

Exit Slip

• Is water considered living? Why or why not?

• Expect a quiz next class! Content and vocabulary