2. Cell Theory Cilia

3. Cell Theory 1. All organisms are made of one or more cells. 2. A cell is the smallest unit of life, that carries out all 6 life processes. 3. All cells come from other cells. Cilia Wacky History of Cell Theory VideoWacky History of Cell Theory Video - Link

4. Cell Structures and Function Cells contain specialized structures that carry out the 6 life processes. Cells contain specialized structures that carry out the 6 life processes. These structures are called organelles. These structures are called organelles. Most cells have the same basic organelles: Most cells have the same basic organelles: cell membrane cytoplasmnucleus nuclear envelope (membrane) Two general types of cells:animal cell Two general types of cells:animal cell plant cell plant cell

5. How are cells like an egg? Analogy:shell = egg white = yolk = yolk sac = cell membrane cytoplasm nucleus nuclear envelope

6. Animal Cell

7. Plant Cell

8. Organelles – Parts of the Cell Organelle/SketchPlantAnimalFunction (Job) Plasma membrane ✔✔ controls what enters and leaves the cell; protection; shape Cytoplasm - clear fluid ✔✔ jelly-like fluid that fills the cell and supports the organelles; shape

9. Organelles – Parts of the Cell Organelle/SketchPlantAnimalFunction (Job) Nucleus ✔✔ controls the cell like a brain; contains chromosomes (DNA) Nuclear envelope (membrane) ✔✔ controls what enters and leaves the nucleus

10. Organelles – Parts of the Cell Organelle/SketchPlantAnimalFunction (Job) Mitochondria ✔✔ changes chemicals into energy; “powerhouse” of the cell Ribosomes ✔✔ makes proteins for the cell

11. Organelles – Parts of the Cell Organelle/SketchPlantAnimalFunction (Job) Endoplasmic reticulum ✔✔ tube-like transport system; “subway” of the cell; smooth and rough Golgi apparatus ✔✔ packages and sends out proteins; “UPS” of the cell

12. Organelles – Parts of the Cell Organelle/SketchPlantAnimalFunction (Job) Vacuole ✔✔ stores water, food, and waste for the cell; much larger in plant cells Cell wall ✔ No surrounds the cell membrane of the plant cell; provides support and shape

13. Organelles – Parts of the Cell Organelle/SketchPlantAnimalFunction (Job) Chloroplast ✔ No turns light energy into chemical energy during the process of photosynthesis Lysosome ✔✔ stores digestive enzymes for the cell to break down food

14. Organelles – Parts of the Cell Organelle/SketchPlantAnimalFunction (Job) Centrioles No ✔ aides in cell division in animal cells (mitosis) Now you can Cell-A-Brate!