BIO 2 Lecture Notes - Lecture 4: Oxidative Phosphorylation, Monosaccharide, Lightning
Document Summary
Plants are the primary mediators between the physical world and biological world. Earth was formed ~4. 5 billion years ago: covered with n2, co2, water vapor and h2s, when hit with energy from uv light, volcanic forces, and lightning formed simple amino acids, nucleic acids, lipids, and sugars. Energy + n2, co2, water vapor and h2s 1 billion years- lipids, amino acids, nucleic acid, simple sugar. First prokaryotic life: heterotrophs and anaerobic due to lack of oxygen, confined to aqueous regions because of uv radiation, slow growing. 200-400 million years later, photosynthetic prokaryotes appeared in fossil records: c02 + h2o light (ch2o) + o2. 1. 5- 2 billion years later, oxygen accumulated in high enough levels: evolution of respiration which allowed for life to progress at a faster rate, net 2 atp/ glucose in anaerobic, net 32~36 atp/ glucose in aerobic. Oxidative phosphorylation: grow faster, reproduce faster, evolve faster.
