CAS BI 107 Study Guide - Midterm Guide: Calmodulin, Chromosome, Globin
23 Aug 2016
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Textbook reading: chapters 19. 3, 19. 4, 20, 22, 25, 31. 1. Acts on taxonomic groups larger than species. Influenced by the history of the earth. Macroevolution is not just the accumulation of microevolutionary forces! Anaerobic - no oxygen involved - photosynthesis took hydrogen from hydrogen sulfide (h2s) Aerobic - began taking oxygen from water (h20) instead. Aerobic respiration is 16 times more efficient!! Anaerobic respiration - glycolysis 2 atp. Aerobic respiration - glycolysis krebs cycle oxidative phosphorylation 32. Cyanobacteria - first aerobic bacteria - released oxygen into atmosphere. Oxygen poisonous to many anaerobic organisms: cambrian explosion. All forms of life today can be traced back to this. Preserved fossils from this time period - hugely diverse: mass extinctions. Loss of more than 60% of life. Typically result from environmental change caused by external factors. Dictate earth"s position relative to the sun - influence temperature. All mass extinctions occurred during a drop in sea level.
