CAS GE 100 Lecture Notes - Lecture 7: Redfield Ratio, Plants And Animals, Molybdenum
21 Feb 2017
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Most autotrophs get nutrients from environment in an inorganic form. Nutrients are transported in water through transpiration. Growth of plant is limited by the nutrient which is least abundant or available relative to the needs of the plant. All human proteins made from 20 amino acids. Substances left over from metabolic processes that cannot be used by the organism and must be excreted. Residence time (flow relative to size of storage) Moves carbon between the atmosphere and ocean based on differences in co2 concentrations. Photosynthesis moves carbon into the biota and pumps it into the deep layers when a portion of this carbon sinks as dead organic material and organic wastes. Carbonate pump marine organisms make their shells from calcium carbonate (caco3) Chemical reactions caused by ocean acidification reduces the supply of carbonate ions, which are necessary for corals and phytoplankton to make their skeleton and shells.
