BIOLOGY 280 Final: Review 10_done
16 Nov 2020
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Document Summary
Secondary endosymbiosis, in the history of life, is where a cell created by endosymbiosis will be a symbiote to another cell. Most of the results produce a stromenopile, which are diatoms, brown macroalgae and plant parasites. This definitely occurred because there is evidence of a phospholipid bilayer present in the mitochondria and chloroplasts, which would"ve originated from endosymbiosis. Multicellularity is a big advantage because they are bigger. Bigger things can eat smaller things, move faster, have more tissues to do more things, etc. It is believed that they evolved separately multiple times. To take a closer look at how this happened in the past, people will use living organisms that look/act like the hypothetical steps and use those to prove that those steps are plausible. In a living volvicine algae, some live as single-celled eukaryotes and others live in clumps. When comparing the differences, it seems that the bigger cells have different functions than the smaller cells.
