The Function of Organelles Occupations of Organized Organelles

Cell Wall Found only in plant cells Found only in plant cells Gives support to the cell Gives support to the cell Made of cellulose fibers Made of cellulose fibers

Cell Membrane ALL cells have one Separates what’s inside from environment Made of phospholipids

Nucleus Found only in eukaryotes Found only in eukaryotes Contains DNA Contains DNA  The info needed to make a cell Is covered by 2 membranes Is covered by 2 membranes Nucleolus in middle Nucleolus in middle  Makes ribosomes

Ribosomes Found in ALL cells Make proteins More ribosomes in a cell than any other organelle

Endoplasmic Reticulum Delivery system Delivery system  Delivers proteins made by ribosomes throughout cell Two Parts Two Parts  Rough  Has ribosomes  Smooth  No ribosomes

Mitochondria Powerhouse of the cell  Sugar is broken down for energy Energy released by mitochondria is stored in ATP  Most of cell’s ATP made here Animal cells can’t make own food so we need these to break down sugar for energy

Chloroplasts Found only in plant cells Found only in plant cells Contain chlorophyll Contain chlorophyll Photosynthesis happens in these Photosynthesis happens in these Traps sunlight and  sugar Traps sunlight and  sugar  The sugar is then broken down by mitochondria

Golgi Complex Packages and distributes proteins Proteins are sent here from the ER  Then a piece of Golgi membrane encloses the protein, pinches off, and is sent to another part of the cell or out of it

Vesicles A bubble that surrounds some material in the cell in order to move it A bubble that surrounds some material in the cell in order to move it Lysosomes Lysosomes  Destroy, get rid of waste, or protect Vacuole Vacuole  Digests  Stores water  Plants have a large central vacuole

Recommended Viewing htm htm htm htm Organelle Function Table, p. 62 Organelle Function Table, p. 62