Bell Ringer Name: 2/25/2009 What’s your favorite song and artist? Response.
Bell Ringer 1. The favorite activity is? 2. Least favorite? 3. How many students like to play sports...
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Transcript of Bell Ringer 1. The favorite activity is? 2. Least favorite? 3. How many students like to play sports...
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
Cells11/12/2012
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 CellsCell Walls
Chloroplasts
Central Vacuole
Animal CellsMore Mitochondria
Centrioles (used for cell division)
Eukaryotic Cells
Plant Animal
Eukaryotic OrganelleNucleusFunction – Control
CenterStructure – 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…