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…