Copyright Notice! This PowerPoint slide set is copyrighted by Ross Koning and is thereby preserved for all to use from plantphys.info for as long as that website is available. Images lacking photo credits are mine and, as long as you are engaged in non-profit educational missions, you have my permission to use my images and slides in your teaching. However, please notice that some of the images in these slides have an associated URL photo credit to provide you with the location of their original source within internet cyberspace. Those images may have separate copyright protection. If you are seeking permission for use of those images, you need to consult the original sources for such permission; they are NOT mine to give you permission.
Cell Structure Prokaryotic beforenucleus Eukaryotic truenucleus
Comparing Cell Sizes Mycoplasma µm E. coli 1x2 µm Cyanobacteria 10 µm diam Plant Cell 30x75 µm Obviously eukaryotic Nucleus present Mitochondrion Bacterium Chloroplast Cyanobacterium Endosymbiosis: Eukaryotes are Chimeras!
Theodor Schwann Prussian Zoologist Matthias Schleiden German Botanist All living organisms consist of one or more cells. 2. Some organisms are unicellular, so cells are the fundamental unit of life. 3. New cells come from pre-existing cells by cell division. We can now add: 4. Cells must show all the properties of life. 5. All cells are basically similar in chemical and structural composition. Cell Theory 1839
Vacuole- toxic waste processing Eukaryotic Cell Structure Middle Lamella-pectin glue Cell Membrane-phospholipid -transport proteins Cytosol- enzymes for -fermentation -glycolysis Nucleus-DNA linear histone bound -transcription -replication Endoplasmic Reticulum -internal transport 80S Ribosomes -protein synthesis -translation Golgi Apparatus -sorting -packaging Vesicles -import/export package Mitochondria -respiration 70S ribosomes naked, circular DNA Cell Wall-cellulose+protein Chloroplast -photosynthesis 70S ribosomes naked, circular DNA Other eukaryotic organelles have been omitted here!