BIOL 1010 Lecture Notes - Hydrogen Sulfide, Endergonic Reaction, Electronegativity

• School: UofL
• Department: Biology
• Course: BIOL 1010
• Professor: Igor Kovalchuk

Document Summary

Photosynthesis transforms solar light energy trapped by chloroplasts into chemical bond energy stored in sugar and other organic molecules. This process: synthsizes energy-rich organic molecules from the energy-poor molecules, co2 and h2o, directly or indirectly supplies energy to most living organisms. Plants and other autotrophs are the producers of the biosphere. Organisms aquire organic molecules used for energy and carbon skeleton by one of two nutritional modes: autotrophic nutrition, heterotrophic nutrition. The energy source may be from light (photoautotrophic) or the oxidation or inorganic substances (chemoautotrophic) Photoautotrophs autotrophic organisms that use light as an energy source to synthesize organic molecules. Examples are photosynthetic organisms such as plants, algae and some prokaryotes. Chemoautotroph- autotrophic organisms that use the oxidation of inorganic substances, such as sulfur or ammonia, as an energy source to synthesize organic molecules. Unique to some bacteria, this is a rarer form of autotrophic nutrition. Heterotrophic nutrition- nutritional mode of acquiring organic molecules from compounds produced by other organisms.