History of the Carbon Cycle

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Presentation transcript:

History of the Carbon Cycle

Carbon Cycle A biogeochemical cycle by which carbon is exchanged among the biotic and abiotic factors of the Earth. 11/17/2018

Plant Cell Review 11/17/2018

Organelles Mitochondrion: breaks down organic molecules in the presence of oxygen to create energy for the cell (cellular respiration)

Chloroplast: Stores energy in the form of organic molecules from carbon dioxide and releases oxygen by using sunlight (photosynthesis) 11/17/2018

Endosymbiotic theory: a host cell engulfed prokaryotic cells capable of photosynthesis and cellular respiration 11/17/2018

Which organelle and their process came first?

Evidence of Oxygen in the Atmosphere Cyanobacteria: bacteria that get their energy through photosynthesis and are the only photosynthetic prokaryotes able to produce oxygen.

Stromatolites: originally formed by the growth of layer upon layer of cyanobacteria These growths primarily contributed to the formation of oxygen of earth's atmosphere https://ca.pbslearningmedia.org/resource/nvmn-sci-stromatolites/wgbh-nova- making-north-america-stromatolites-worlds-oldest-living-fossil/#.Wdv1O2hSzcs

The oxygen produced from the cyanobacteria was used to make rust (iron + oxygen) Rust in rock layers begins to form about 2.7 billion years ago (bya) This is after the first stromatolite fossil appears in our fossil record (3.7 bya)