BIO1130 Proterozoic Eon - Proterozoic Eon Geological time...

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Page 1 Proterozoic Eon BIO1130 Organismal Biology Université d’Ottawa / University of Ottawa 2:25 PM BIO1130 Organismal Biology 1 Proterozoic Université d’Ottawa / University of Ottawa 2:25 PM BIO1130 Organismal Biology 2 Geological time scale and building height (1floor – 60Ma, 72 floors, 12 feet/floor) Major Eons (Ma) Phanerozoic (550 Ma to present time, top 9 floors’) Proterozoic (2,500 – 550 Ma, 33 rd -63 rd ) Archaean (3,800 – 2,500 Ma, 12 th –33 rd) Hadean (4,500 – 3,800 Ma, 0-12 th ) Domains of life Figure 21.15 2:25 PM 3 Archaea, Eubacteria & Eukarya (Table 21.1) Archaea Eubacteria Eukarya Cell Wall No peptidoglycan Peptidoglycan Cellulose, chitin or none Plasma membrane Branched chain fatty acids Unbranched chain fatty acids Unbranched chain fatty acids Flagella Yes; spins Yes spins Yes, doesn’t spin Translation Complex RNA polymerase Simple RNA polymerase Complex RNA polymerase Nuclear envelope No No Yes Circular Chromosome Yes Yes No DNA/histones Yes No Yes 2:25 PM 4 Université d’Ottawa / University of Ottawa 2:25 PM BIO1130 Organismal Biology 5 Origin of the ________ envelope Figure 2.19 Cytoplasm Nuclear region (Nucleoid) Endoplasmic reticulum Nuclear envelope Université d’Ottawa / University of Ottawa 2:25 PM BIO1130 Organismal Biology 6 Endosymbiosis Figure 2.21 Nuclear material (Nucleoid) Aerobic bacteria Developing endomembranes Mitochondria Nuclear envelope Photosythetic bacteria Endoplasmic retic. Chloroplast
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Page 2 Proterozoic Eon BIO1130 Organismal Biology Secondary endosymbiosis Red algae chorophyll a Green algae chlorophyll a & b Land plants Plastid Plastid Plastid Animals Fungi Some protists Green algae Red algae Multiple membrane plastid Multiple membrane plastid Figure 23-31 Non-photosynthtic eukaryote cell Heterokonts Ciliates Apicomplexans Dinoflagellates Euglenoids Chlorarachniophytes 2:25 PM 7 Green plants Eukaryote taxa Figure 23.2 2:25 PM 8 Protists as primary Producers
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BIO1130 Proterozoic Eon - Proterozoic Eon Geological time...

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