BIOL 1108 Midterm: Unit 2 Study Guide
Document Summary
A tree is roughly half liquid water and the other half is created almost entirely out of thin air. Photosynthesis: biochemical process for building carbohydrates by using energy from sunlight and carbon. Chapter 8: photosynthesis dioxide taken from the air. H2o + co2 + light = c6h12o6 + o2. Fossil fuels are the legacy of ancient photosynthesis: oil has its origin in the bodies of marine algae and organisms that graze on them, while coal represents the geologic remains of terrestrial plants. 60% of photosynthesis carried out by terrestrial organisms. 40% of photosynthesis takes place in the ocean. Half which are single-celled eukaryotes and the other half is photosynthetic bacteria. Photic zone: the surface layer of the ocean (100 m deep) where photosynthesis occurs. Highest rates of photosynthesis occur in : tropical rainforests, temperate grasslands, temperate forests. Electron donor: reducing agent which donates its electrons to another compound. In photosynthesis, they usually come from water (h2o)
