Cell Organelles Eukaryotic Cells Cell Parts Cells the

Cell Organelles Eukaryotic Cells

Cell Parts • Cells – the basic unit of life • Organelles - small structures inside a cell with specific functions. Analogy – City of Rocklin

Cell Membrane/Plasma Membrane Cell membrane 1. Function: Regulates materials entering and exiting the cell. 2. Structure: Two layers of phospholipids, proteins Analogy – Rocklin city limits

Cytoplasm 1. Function: The fluid that all the organelles float in. 2. Structure: made up of fluid and organelles except for nucleus Analogy – All air, water, life that are in Rocklin, except City Hall

Nucleus 1. Function: “Control Center. ”Stores DNA 2. Structure: membrane bound Analogy – City Hall

Nuclear Envelope 1. Function: Regulates what enters or exits the nucleus. 2. Structure: Double Layer of Lipids Analogy – Walls & Doors of City Hall

Nucleolus 1. Function: Produces ribosomes 2. Structure: Inside Nucleus, separate from DNA Analogy – The Mayor

Endoplasmic Reticulum Rough ER Smooth ER 1. Function: Transports proteins a. Rough ER: has ribosomes b. Smooth ER: no ribosomes 2. Structure: tubes and channels Analogy – Roads & Sidewalks

Ribosomes Free Ribosomes 1. Function: Makes proteins. 2. Structure: small circular organelles Analogy – Restaurants, Factories, Builders.

Vacuoles & Vesicles 1. Function: Storage for water, nutrients or waste. 2. Structure: small membrane-bound organelle. Analogy – Grocery stores, water tanks.

Lysosomes 1. Function: packets of enzymes that break down materials in a cell. 2. Structure: Small membrane-bound organelles Analogy – Recycling center

Mitochondria 1. Function: Produce energy for the cell – site of cellular respiration. “The Powerhouse” 2. Structure: Double membrane-bound, kidney shaped. Analogy – PG&E

Golgi Apparatus 1. Function: Packages, labels and ships proteins out of the cell. 2. Structure: Pancake-shaped layered organelle Analogy – Post Office

Cytoskeleton Microfilaments Microtubules 1. Function: Provide support and structure for the cell. a. Microfilaments b. Microtubules 2. Structure: Tubules Analogy – Wood, cement, steel beams

Centrioles (Animals Only) Centrioles 1. Function: microtubules that help divide the cell during cell division. • Structure: Tubules Analogy – Rocklin High School vs. Whitney High School

Chromatin (DNA) The genetic material within the cell

Cilia & Flagella Cilia 1. Function: provides movement for the cell or objects moving by the cell. 2. Structure: a. Flagella – 1 long fiber b. Cilia – many short fibers Analogy – Cars or bicycles.

Chloroplasts (Plants only) Chloroplasts 1. Function: site of photosynthesis (converting sun and CO 2 into sugar). 2. Structure: Membrane bound organelles that contain chlorophyll Analogy – Solar Panels

Cell Wall (Plant cells only) Cell Wall 1. Function: Provides support for the cell and the plant. 2. Structure: Made of cellulose Analogy – ground, rock wall

Cell Parts Analogy • Create an analogy (besides the city analogy) for the cell and its parts • Possible ideas: – Stadium – School – Country – Restaurant – House – Mall – Waterpark

Stadium Example: • • Cell membrane: wall of stadium, gates Cytoplasm: everything inside the stadium. Nucleus: the control room for the stadium. Etc…