1. Cells
Chapter 2

2. What are cells?
Cells are the smallest unit of living things that can carry out the basic processes of life.
Unicellular (one-celled) an organism made out of one cell that carries out all its life processes.
Multicellular (many-celled) an organism that is made of more than one cell.
Each cell carries out its own functions but they also work together.

3. ANIMAL CELLS

4. Parts of the Animal Cell:
Cell Membrane
A layer around the outside of the cell
Cytoplasm
Gel-like liquid that fills the region between the nucleus and cell membrane
Nucleus
The cell’s control center
Mitochondria
Break down food and supply energy for the cell
Vacuoles
Store water, food, and wastes

6. PLANT CELLS

7. Parts of the Plant Cell:
Cell Wall
An additional outer covering around the outside of the cell
Vacuole
Plant cells usually have one large central vacuole to store extra water and provide support
Chloroplasts
Plants make their own food in these structures where the energy from sunlight is used to produce food
They are green because of chlorophyll which is able to use the energy from sunlight
The cell wall provide extra support and the stiff structure of plants. Vacuoles keep plants from drying out.

9. How Are Cells Organized?
Cell- specialize
Tissue- similar cells working together
Organ- heart, lung, skin, etc.
Organ system- circulatory, heart, vessels, blood, etc.

10. Do you remember what we learned? 1. What