Introduction to Photosynthesis. define the terms autotroph and heterotroph ; state that light energy is used during photosynthesis to produce complex organic molecules; explain how respiration in plants and animals depends upon the products of photosynthesis;
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Autotroph: organisms that use light energy or chemical energy and inorganic molecules (carbon dioxide and water) to synthesis complex organic molecules
Chemoautotrophs are early prokaryotes that used exergonic (reactions that release heat) to make complex organic molecules
Photoautotrophs use sunlight and inorganic molecules (carbon dioxide and water)
Heterotrophs: organisms that ingest and digest complex organic molecules releasing the chemical potential energy stored in them e.g. humans
6CO2 + 6H20 C6H12O6 + 602