Chapter 5,part A Microbial Metabolism
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings B.E Pruitt & Jane J. Stein Chapter 5, part A Microbial Metabolism
Microbial Metabolism Metabolism is the sum of the chemical reactions in an organism. Catabolism is the energy-releasing processes. Anabolism is the energy-using processes
Microbial Metabolism • Metabolism is the sum of the chemical reactions in an organism. • Catabolism is the energy-releasing processes. • Anabolism is the energy-using processes
Microbial Metabolism Catabolism provides the building blocks and energy for anabolism. Simple molecules such Heat as glucose,amino acids, released glycerol,and fatty acids Catabolic reactions Anabolic reactions transfer energy from transfer energy from complex molecules ATP to complex to ATP molecules ADP Complex molecules such Heat as starch,proteins,and released lipids Figure 5.1
• Catabolism provides the building blocks and energy for anabolism. Microbial Metabolism Figure 5.1
A metabolic pathway is a sequence of enzymatically catalyzed chemical reactions in a cell. Metabolic pathways are determined by enzymes. Enzymes are encoded by genes
• A metabolic pathway is a sequence of enzymatically catalyzed chemical reactions in a cell. • Metabolic pathways are determined by enzymes. • Enzymes are encoded by genes
The collision theory states that chemical reactions can occur when atoms,ions,and molecules collide. Activation energy is needed to disrupt electronic configurations. Reaction rate is the frequency of collisions with enough energy to bring about a reaction. Reaction rate can be increased by enzymes or by increasing temperature or pressure
• The collision theory states that chemical reactions can occur when atoms, ions, and molecules collide. • Activation energy is needed to disrupt electronic configurations. • Reaction rate is the frequency of collisions with enough energy to bring about a reaction. • Reaction rate can be increased by enzymes or by increasing temperature or pressure