Endosymbiosis Examine these diagrams showing how an ancestor to eukaryotic cells may have engulfed smaller heterotrophic prokaryotic cells that began producing ATP for it Endosymbiosis heterotrophic eukaryote An ancestor to green algae and plants may have engulfed smaller autotrophic prokaryotic cells that produce sugar using light energy The outer membrane of plastids may have come from the host cell membrane

Explain the Endosymbiosis Theory NAME PERIOD Explain how chloroplasts and mitochondria are thought to have originated as prokaryotic cells that were engulfed by larger primitive eukaryotic cells by presenting similarities among plastids and prokaryotic cells Describe the process of engulfment that normally makes vesicles and may have led to mitochondria Explain what the host cell provides to mitochondria and what the mitochondria gives back Describe the further process of engulfment that may have led to choloroplasts Explain what the host cell with mitochondria provides to the chloroplast, and what the chloroplast gives back Explain each piece of evidence that plastids originated as separate prokaryotic cells ________________________________________________________________________________________