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Cell Organelles Pages 20-21 Organelles Structures inside of cells that perform different cell activities! Also known as “little or tiny” organs Nucleus (Nuclei) Known as the “control center” of the cell Operates like our brain Contains DNA instructions (our genetic information). Give the instructions for protein synthesis NUCLEUS Mitochondria (Mitochondrion) Known as the “powerhouse” of the cell This is the place where energy(ATP) is made Contain folds called cristae If you increase the surface area (# of folds), MORE energy is made Vacuole Stores waste (mostly water) Larger in plant cells than animal cells Plants need to absorb excess water Larger vacuole = more water Smaller vacuole = less water Chloroplast ONLY Plant Cells have chloroplast This is the place where photosynthesis takes place – makes glucose! Remember photosynthesis is the reaction plants use to make their own food Ribosome Site of PROTEIN PRODUCTION RNA travels to ribosomes to make proteins They look like small dots Cilia & Flagella • Help the cell move • Cilia = short, hair-like structure • Flagella = long, whip-like structure Cytoplasm • Gel-like substance throughout the cell that holds the organelles in place Cell Wall ONLY Plant Cells have a cell wall Located on the outside of the plasma membrane Provides structure and support Plasma Membrane Can be called semi-permeable OR selective Allows certain material into and out of the cell Known as the “gate-keeper” of the cell Responsible for maintaining a stable, internal environment (HOMEOSTASIS) Plasma Membrane Also known as cell membrane & phospholipid bilayer Made of many phospholipids Heads: Hydrophilic (water loving) Tails: Hydrophobic (water fearing) Plasma Membrane • Proteins are found within the plasma membrane – Channel Proteins allow materials to pass through – Receptor Proteins allows the cell to communicate with other cells Plasma Membrane Cell-fies Instructions: Draw and Color illustrations on the front. On the back write the name of the organelle and provide the function of each Nucleus Plasma Membrane Ribosomes Vacuole Mitochondria Chloroplast Cell Phones Animals 1. Cell membrane 2. Cytoplasm Membrane 3. Vacuole Cytoplasm 4. Nucleus Nucleus 5. Ribosomes 6. Mitochondria 7. Lysosome(Recycle) 8. Rough ER Rough ER 9. Smooth ER Plant 1. Cell Wall 2. Cell 3. 4. 5. Mitochondria 6. Chloroplast 7. Vacuole 8. 9. Smooth ER Organelle Plasma Membrane Cell Wall Cytoplasm Nucleus Mitochondria Vacuole Chloroplast Ribosomes How can I remember it? Members only can come and go. I'm a brick wall. Sail through my plasma. I'm the control center. I am a "mighty" power house. I'll store anything,(Hint: Vacuum Bags) Make me something sweet to eat I make “some” nice protein