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What was earth like in its beginning? Hot Poisonous gases No oxygen lots of radiation only prokaryotes
What is endosymbiosis? theory about how eukaryotic cells evolved from prokaryotic cells 1 a bacterium engulfs another bacterium 2 bacterium lives inside the bacterium 3 have a beneficial relationship 4 the bacterium inside the bacterium also divides with the bacterium
What evidence supports endosymbiosis? 1 mitochondria has their own membrane like a prokaryotic cell 2 mitochondria has its own circular DNA 3 mitochondria reproduce by binary fission 4 mitochondrial ribosomes are similar to prokaryotic cells 5 chloroplasts=cyanobacterium
What is the hypothesis for multicellular eukaryotic cells? aggregates of single celled eukaryotes began to specialize as it specialized it led to multicellularity
Created by: Jtboner