cell organelles microscopic “organ – like” structures that help the cell to function
TRANSCRIPT
Cell Organellesmicroscopic “organ – like”
structures that help the cell to function
First point:
Two types of cells
• Prokaryotic: cells without a nucleus; such as Bacteria
•Eurkaryotic: cells with a nucleus; such as animal cells and plant cells
Cell Membrane
• found in all cells• The outer “skin” • Made of fats and proteins• is semi-permeable (has holes
in it )
FUNCTIONS:Allows for passage of materials in
and out of the cellUsed for cell communication and
identification
Cell Wall• a tough outer coat• found in ONLY plant cells &
some bacteria cells
FUNCTIONS :
Adds extra protection and support to plant cells
Cytoplasm
• Found in all cells• The watery medium
inside• the cell• Made of mostly water
FUNCTIONS :Holds up / supports the
organelles
Stores energy
Nucleus• found in all EUKARYOTIC
cells (plants, animals, fungi and protists)
• Largest organelle
FUNCTIONS :Has DNA inside Is the “control” center of the
cell
Bacteria cells do not have one = PROKARYOTES
Nucleolous• found inside the nucleus
FUNCTIONS :
Has RNA inside
Gives instructions for the making of protein
Nuclear Membrane• the porous “skin” around the
nucleus
FUNCTIONS :
Allows things to enter and leave the nucleus
Vacuoles• small storage units in all
cells
• large water vacuole in plant cells
FUNCTIONS :
Stores material for the cell
Lysosomes
• nicknamed “suicide packets”
• has digestive acids inside
• has a double lined membrane
FUNCTIONS :
helps the cell to digest food***can burst and kill itself ***
Ribosomes
• smallest cell organelle
• found in ALL cells
• small round “specks”
FUNCTIONS :where proteins aremanufactured
Endoplasmic Reticulum (ER)
• curvy roadways in the cell
FUNCTIONS :
transports things around in the cell cytoplasm
Endoplasmic Reticulum (ER)
• curvy roadways in the cell
FUNCTIONS :
transports things around in the cell cytoplasm
Centrioles
• Only found in animal cells
• “bundles of sticks”
FUNCTIONS :
helps the cell with reproduction
Mitochondria
• large “peanut” shaped organelle
• has folded membranes inside
• nicknamed the “powerhouse” of the cell
FUNCTIONS :
a factory where ENERGY is made
Golgi Bodies
• looks like a stack of pancakes (with syrup)
FUNCTIONS :
to make vacuoles
“packages” things for the cell
Chloroplasts
• found ONLY in plant and some protists cells
• green football-shaped organelles
FUNCTIONS :to make food for plant cellsthrough the process of
photosynthesis