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DRAW ENDOSYMBIOTIC THEORY Watch this video Write a short paragraph in your BILL: EXPLAINING the ENDOSYMBIOTIC THEORY Now let’s draw it to see the evidence! Bacterial plasma membrane Add some bacterial ribosomes and DNA Remember host cell is a eukaryote. Add a nucleus and host DNA How is this different from bacterial DNA? Add some eukaryotic host ribosomes. How are these different from bacterial ribosomes? Evolved to become mitochondrion WHAT’s the EVIDENCE? Look at the colors in your picture. Which parts of mitochondria/chloroplasts have a prokaryotic bacterial origin? Which have a eukaryotic host origin? Make a list of the evidence for the ENDOSYMBIOTIC THEORY? Find these in your picture! WHAT’s the EVIDENCE? Find these in your picture! MITOCHONDRIA & CHLOROPLASTS : 1. Have single circular loop of DNA like bacteria 2. Have smaller ribosomes like bacteria 3. Only organelles besides nucleus with double membranes inner cristae/thylakoids have phospholipids like bacteria outer membrane has phospholipids like plasma membrane 4. Replicate independently of nucleus use binary fission like bacteria 5. Inner cristae/thylakoid membranes contain enzymes for respiration/photosynthesis like bacterial plasma membranes
