http://www.cartage.org.lb/en/themes/Sciences/Zoology/AnimalPhysiology/Anatomy/Anatomy/animalcell.jpg Cork Cells http://www.ihcworld.com/histowiki/fetch.php?w=200&h=&cache=cache&media=epithelial-cells.jpg Prokaryotic Cells • • • • Bacteria Simplest organisms VERY small No membrane-bound organelles • No organized nucleus (Do have DNA) Parts of the Eukaryotic Cell Animal Cell Plant Cell The basics… Cytoplasm (Cytosol): The “juice” of the cell. Nucleus: Contains DNA in the form of chromosomes or chromatin. NUCLEOLUS Yup. You should draw this. Nucleolus: Dark spot in the nucleus; where ribosomes are made. Cell Membrane: Flexible outer membrane that controls what substances pass in and out of the cell. Cell (Plasma) Membrane: •“Selectively permeable” (lets only some things in and out of the cell). •Made of phospholipids and proteins. •Two layers: lipid bilayer Phospholipids: heads point out toward the water; tails point in to the middle of the membrane Peripheral Proteins: located on either surface of the membrane. Integral Proteins: extend from one side of the membrane to the other. Fluid Mosaic Model Proteins “float” around the membrane like icebergs moving through the water. Plant cells only… Cell Membrane Cell Wall Mmm-hmm… this, too Nucleus Nucleolus Chloroplast Vacuole Cell Wall: Rigid covering that lies outside the cell membrane; supports and protects the cell. Vacuole: Fluid-filled storage chamber. Very large in plant cells; smaller in animal cells. Chloroplast (Plastid): Site of photosynthesis. Using sunlight, removes CO2 from the atmosphere and creates sugar (glucose) and oxygen. Plant or Animal Cells? Can you tell me….. • What do plant and animal cells have in common? • What are their differences?