Chapter 5,part C Microbial Metabolism
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings B.E Pruitt & Jane J. Stein Chapter 5, part C Microbial Metabolism
Chemotrophs Use energy from chemicals. 。Chemoheterotroph X Glucose ·NAD ETC Pyruvic acid ADP+P)ATP Energy is used in anabolism
Chemotrophs • Use energy from chemicals. • Chemoheterotroph • Energy is used in anabolism. Glucose Pyruvic acid NAD+ NADH ETC ADP + P ATP
Chemotrophs Use energy from chemicals. Chemoautotroph,Thiobacillus ferroxidans 2Fe2+ NAD ETC 2Fe3++ 2 Energy used in the Calvin-Benson cycle to fix CO2
Chemotrophs • Use energy from chemicals. • Chemoautotroph, Thiobacillus ferroxidans • Energy used in the Calvin-Benson cycle to fix CO2 . 2Fe2+ 2Fe3+ NAD+ NADH ETC ADP + P ATP 2 H+
Phototrophs ·Use light energy. Chlorophyll oxidized Photoautotrophs use energy in the Calvin-Benson cycle to fix CO2. Photoheterotrophs use energy
Phototrophs • Use light energy. • Photoautotrophs use energy in the Calvin-Benson cycle to fix CO2 . • Photoheterotrophs use energy. Chlorophyll Chlorophyll oxidized ETC ADP + P ATP
Metabolic Diversity Among Organisms Nutritional type Energy source Carbon source Example Photoautotroph Light C02 Oxygenic: Cyanobacteria plants. Anoxygenic:Green, purple bacteria. Photoheterotroph Light Organic Green,purple compounds nonsulfur bacteria. Chemoautotroph Chemical co Iron-oxidizing bacteria. Chemoheterotroph Chemical Organic Fermentative bacteria. compounds Animals,protozoa, fungi,bacteria
Metabolic Diversity Among Organisms Nutritional type Energy source Carbon source Example Photoautotroph Light CO2 Oxygenic: Cyanobacteria plants. Anoxygenic: Green, purple bacteria. Photoheterotroph Light Organic compounds Green, purple nonsulfur bacteria. Chemoautotroph Chemical CO Iron-oxidizing bacteria. Chemoheterotroph Chemical Organic compounds Fermentative bacteria. Animals, protozoa, fungi, bacteria