Biology-124

Biology-124 - 2 Biology: Chapter 6 Photosynthesis and Cell...

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Jan. 24 Biology: Chapter 6 Photosynthesis and Cell Respiration (Only names of molecules and reactions mentioned in class) Photosynthesis: Not a cycle of energy because energy can’t cycle Carbon does Cycle Carbon ending up as glucose (higher energy molecule than CO2) Glucose storing some of the energy that the plant received, by converting the light energy into chemical energy In addition to glucose Oxygen comes from water Glucose gets used by cells and some of the energy from it participates in reactions in the mitochondria In Mitochondria, the energy is transferred from glucose to ATP and carbons, hydrogen, and oxygen is let off as CO2 and H20 At every transfer of energy, some is going to be let off as heat Plant produces CO2 and produces O2 but doesn’t produce enough O2 to support its metabolism How do plants grow? Ancients though plants ate soil Van Helmont in 1600s: No loss in soil weight By 1700s: Plants needed something from atmosphere Most of the mass of the plant comes from CO2 – from the air (not water like most think) Plants need WHAT? o
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This note was uploaded on 04/01/2008 for the course BIOL 101 taught by Professor Hogan during the Spring '08 term at UNC.

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Biology-124 - 2 Biology: Chapter 6 Photosynthesis and Cell...

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