organelles

eukaryotes

• nucleus

  • membrane bound in center of cell

  • controls cell activites

• endoplasmic reticulum

  • layers of membranes

  • directs materials throughout cells

    • smooth er - no ribosomes

    • rough er - ribosomes

• golgi apparatus

  • layers of membranes closest to plasma membrane

  • packages and distributes materials to outside cell

• chloroplast

  • stacks of membranes inside a fluid-filled organelle

  • site of photosynthesis

• mitochondria

  • folded inner membrane inside outer membrane

  • break down food and release energy

• vaculoes

  • storage (mainly water)

prokaryotes

• plasma membrane

  • lipid bilayer

  • maintain homeostasis by controlling what enters or exits the cell

• cell wall

  • rigid layer on outside of plant cell

  • gives support to cell

• cytoplasm

  • fluid inside cell

  • provides structure

• cytoskeleton

  • protein fibers

  • gives support inside the cell

• ribosomes

  • tiny round structures

  • site of photosynthesis

• chromatin

  • long fibers of genetic material / DNA

special organelles of protists5