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 Lack a NUCLEUS! 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 Parts Eukaryotic cells contain specialized structures called “organelles” or little organs.

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

8. 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.

9. CYTOPLASM gelatin-like inside cell membrane constantly flows Helps to keep organelles in place

10. CYTOSKELETON scaffolding-like structure in cytoplasm helps the cell maintain or change its shape made of protein Made of microtubules & microfilaments

11. 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

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

13. NUCLEOLUS Aka “little nucleus” Found in the nucleus Ribosomes are made here!!

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