Two Types of CellsTwo Types of Cells

Prokaryotic EukaryoticProkaryotic Eukaryotic

What do all What do all cells have in cells have in common?common?

ALL cells have a ALL cells have a cell membrane, cell membrane, cytoplasm, DNA, cytoplasm, DNA, and ribosomesand ribosomes

Cell membraneCell membrane – – the flexible outer the flexible outer covering of a cell covering of a cell that controls what that controls what goes in and outgoes in and out

What do all cells have in What do all cells have in common?common?

CytoplasmCytoplasm – the – the liquid substance that liquid substance that fills up a cellfills up a cell

DNADNA – cell – cell instructionsinstructions

RibosomesRibosomes- a part - a part in a cell that makes in a cell that makes protein according to protein according to cell instructionscell instructions

What are the 2 main types of What are the 2 main types of cells?cells?

1.1. ProkaryoticProkaryotic Cells that lack Cells that lack

a a nucleusnucleus

2.2. EukaryoticEukaryotic Cells that have Cells that have

a a nucleusnucleus

What is a nucleus?What is a nucleus?

NucleusNucleus – Holds the genetic information – Holds the genetic information of the cell (DNA) and controls most cell of the cell (DNA) and controls most cell activitiesactivities

Prokaryotic CellsProkaryotic Cells

Small, simple cells Small, simple cells with a cell with a cell membrane, membrane, cytoplasm, DNA, & cytoplasm, DNA, & ribosomesribosomes

No nucleusNo nucleus Single-celled Single-celled

(unicellular) (unicellular) organismsorganisms

Example: bacteriaExample: bacteria

Example of Prokaryotic CellsExample of Prokaryotic Cells-Bacteria-Bacteria

Example of Prokaryotic CellsExample of Prokaryotic Cells--Nostoc Nostoc (Cyanobacteria)(Cyanobacteria)

Prokaryotic Cell DiagramProkaryotic Cell Diagram

Eukaryotic Eukaryotic CellsCells

Larger more complex Larger more complex cells with a cell cells with a cell membrane, cytoplasm, membrane, cytoplasm, DNA, & ribosomesDNA, & ribosomes

Have a nucleus and Have a nucleus and other organellesother organelles

Organelles Organelles - - specialized parts specialized parts inside a cell with a inside a cell with a particular functionparticular function

Either single-celled or Either single-celled or part of a multicellular part of a multicellular organismorganism

Example: plant, Example: plant, animal, fungus, animal, fungus, protistsprotists

Examples of Eukaryotic CellsExamples of Eukaryotic Cells-Plant and Animal-Plant and Animal

SpirogyraSpirogyra (Protist) (Protist)

Eukaryotic Cell DiagramEukaryotic Cell Diagram

http://www.cellsalive.com/http://www.cellsalive.com/howbig.htmhowbig.htm

Prokaryotic vs. EukaryoticProkaryotic vs. Eukaryotic