Download Prokaryotic and Eukaryotic Cells

Prokaryotic Cells
Prokaryotic Cells
Prokaryotes – Two types
• Bacteria
• Found everywhere on earth
• Some bacteria can make you sick
▫ Streptococcus - Strep throat
• Some bacteria are used to make
food
▫ Lactobacillus - cheese, yogurt, and
sauerkraut
• Archaea
▫ First found living in extreme
environments
 Thermal vents, and volcanic hot
springs
▫ Have now been found to live in
many different environments
 In the ocean, soil, fresh water,
and others
Parts of a Prokaryotic Cell
• Cell Wall
• Plasma Membrane
• Cytoplasm
• Ribosomes
• Nucleoid
• Flagella
Cell Wall
• Tough but flexible outside layer of a
prokaryotic cell
• Helps give prokaryotes structure
Cell Wall
(yellow)
Plasma Membrane
• A flexible membrane that sits
below the cell wall
• Selectively permeable
• Important in “talking” with other
cells
Plasma
Membrane
(Green)
Cytoplasm
• The gel like fluid inside a cell
• Made up mostly of water
• Important for the movement of
molecules inside the cell
Cytoplasm
Ribosomes
• Make proteins.
• Proteins are responsible for many
different jobs inside of cells.
Ribosomes
Nucleoid
• The Nucleoid is the region of DNA in
a prokaryotic cell
• It is not surrounded by a membrane
• The DNA is free floating in the
cytoplasm
Nucleoid
Flagella
• Helps the prokaryote to move
• Also helps the prokaryote to sense
temperatures and chemicals in its
environment
Flagella