Bell Ringer 1. The favorite activity is? 2. Least favorite? 3. How many students like to play sports after school? 4. Based on these data, would you say.

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Presentation transcript:

Bell Ringer 1. The favorite activity is? 2. Least favorite? 3. How many students like to play sports after school? 4. Based on these data, would you say more students like to be around people or be alone? Number of Students

Cells 11/12/2012

Cell Theory (Schleiden and Schwann) 1. All living things are made up of one or more cells 2. Cells are the basic units of structure and function in organisms 3. All cells come from pre-existing cells

2 main types of cells Prokaryotes (p. 57) Eukaryotes (p58-59)

Prokaryotes No Nucleus No Organelle Single Celled Organisms (bacteria)

Eukaryotes Eu – True Karyo – Nucleus Nucleus Membrane Bound Structures (organelle) Multicellular Organisms

Types of Eukaryotic Cells Plant Cells Cell Walls Chloroplasts Central Vacuole Animal Cells More Mitochondria Centrioles (used for cell division)

Eukaryotic Cells PlantAnimal

Eukaryotic Organelle Nucleus Function – Control Center Structure – membrane bound structure that houses DNA Nucleolus is where Ribosomes are made

Ribosomes and the ER Endoplasmic Reticulum – like a system of conveyor belts that move materials around throughout the cell Ribosomes – make proteins can be free or attached to the ER

Vacuoles Storage Larger and more numerous in plant cells

Mitochondria Power House Supplies the cell energy needs Have their own DNA and Ribosomes Why do animal cells have more mitochondria than plant cells?

Power House

Chloroplasts Found in Plant Cells Chloro – green Make Sugars

Golgi Apparatus Packing and Shipping

Cell Membrane Boundary Functions to maintain homeostasis All Cells have a cell membrane More on the cell membrane later…

Lysosomes Garbage Disposals Get rid of unwanted things in the cell Pac – Man

Cell Wall Plants and Prokaryotes Give cells their strength and shape

Cytoplasm Found in all cells Gel-like liquid that fills the empty space in the cell Holds organelles in place

The end… Except for one more cartoon…

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