1. LESSON 1

2. COMMON CELL TRAITS
A cell is the smallest unit that is capable of performing life functions.

3. COMPARING CELLS
The size & shape of a cell relates to its function. (job it does)

4. Prokaryotic Cells (proh KAYR ee yah tihk)
cells without membrane-bound structures
EX: bacteria
pond scum

5. Eukaryotic Cells (yew KAYR ee yah tihk)
cells with membrane-bound structures
EX: animals, plants, fungi and protists

6. CELL WALL protects the cell gives shape is made of cellulose
A cell wall is found in plants, algae, fungi, & most bacteria.

7. CELL MEMBRANE Outer covering, protective layer around ALL cells
For cells with cell walls,the cell membrane is inside the cell wall
Allows food, oxygen, & water into the cell & waste products out of the cell.

8. CYTOPLASM gelatin-like inside cell membrane constantly flows
aka protoplasm

9. CYTOSKELETON scaffolding-like structure in cytoplasm
helps the cell maintain or change its shape
made of protein

10. NUCLEUS Directs all cell activities
Contains instructions for everything the cell does
These instructions are found on a hereditary material called DNA
Usually the largest organelle

11. NUCLEAR MEMBRANE separates nucleus from cytoplasm
controls movement of materials in & out of nucleus

12. NUCLEOLUS
Aka “little nucleus”
Found in the nucleus

13. CHROMATIN contains genetic code that controls cell
made of DNA & proteins