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Different carbohydrate metabolism pathways by microbes

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TRIDIP BORUAH

Carbohydrate is the major source of energy for a variety of microbes. Here are some significant metabolic pathways by which microorganisms utilize carbohydrates

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“Significance of different Carbohydrate metabolism pathways in microorganisms” Presented by- Tridip Boruah Roll no- 37 MSc 3rd semester Department of Botany Gauhati University Guided by- Dr Diganta Narzary
Contents:  Introduction  Glycolysis  Pentose Phosphate Pathway  Cellular Respiration  The Krebs Cycle  Electron Transport Chain  Significance of aerobic respiration  Anaerobic respiration  Fermentation  Conclusion  Reference
Introduction A sequence of enzymatically catalyzes chemical reactions occurring in a cell is called a metabolic pathway. Most microorganisms oxidize carbohydrates as their primary source of cellular energy. Glucose is the most common carbohydrate energy source used by the microorganisms. Two general processes for carbohydrate metabolism-  Cellular respiration  Fermentation
An overview of Respiration and Fermentation
GLYCOLYSIS
PENTOSE PHOSPHATE PATHWAY Bacteria like Bacillus subtilis, E coli have another pathway in addition to glycolysis for oxidation of glucose. The most common alternative is the pentose phosphate pathway. The significance of this pathway is that it produces important intermediate pentose used in synthesis of- Nucleic Acids Glucose Certain amino acids
Different carbohydrate metabolism pathways by microbes
CELLULAR RESPIRAION It is an ATP generating process in which molecules are oxidized and the final electron acceptor is an inorganic molecule with some exception. Two types of Cellular Respiration-  Aerobic Respiration  Anaerobic respiration
THE KREBS CYCLE
Electron Transport Chain
Significance of aerobic respiration in microbes
Anaerobic respiration In anaerobic respiration, the final electron acceptor is an inorganic substance other than the O₂ . Because, only part of the Krebs cycle operates under anaerobic conditions, and since not all the carriers on he ETS participate in anaerobic respiration, The ATP generation is never as high as in aerobic respiration.
Different carbohydrate metabolism pathways by microbes
Different carbohydrate metabolism pathways by microbes
Types of Fermentation
CONCLUSION From the above discussion we can conclude that Carbohydrate metabolism pathways plays a crucial role in microbial metabolism. There are more other pathways such as Lipid and protein metabolism as well but Carbohydrate is their main source of energy and microbes normally doesn’t utilize other sources as long as Carbohydrate is present.
REFERENCE • ‘Microbiology- An introduction’ by Tortora, Funke, Case • Prescott’s microbiology • Microbiology by Michael Pelczar jr • Lehninger Principles of Biochemistry (7th international edition) • https://www.ncbi.nlm.nih.gov • https://www.slideshare.net
Different carbohydrate metabolism pathways by microbes

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Different carbohydrate metabolism pathways by microbes

  • 1. “Significance of different Carbohydrate metabolism pathways in microorganisms” Presented by- Tridip Boruah Roll no- 37 MSc 3rd semester Department of Botany Gauhati University Guided by- Dr Diganta Narzary
  • 2. Contents:  Introduction  Glycolysis  Pentose Phosphate Pathway  Cellular Respiration  The Krebs Cycle  Electron Transport Chain  Significance of aerobic respiration  Anaerobic respiration  Fermentation  Conclusion  Reference
  • 3. Introduction A sequence of enzymatically catalyzes chemical reactions occurring in a cell is called a metabolic pathway. Most microorganisms oxidize carbohydrates as their primary source of cellular energy. Glucose is the most common carbohydrate energy source used by the microorganisms. Two general processes for carbohydrate metabolism-  Cellular respiration  Fermentation
  • 4. An overview of Respiration and Fermentation
  • 6. PENTOSE PHOSPHATE PATHWAY Bacteria like Bacillus subtilis, E coli have another pathway in addition to glycolysis for oxidation of glucose. The most common alternative is the pentose phosphate pathway. The significance of this pathway is that it produces important intermediate pentose used in synthesis of- Nucleic Acids Glucose Certain amino acids
  • 8. CELLULAR RESPIRAION It is an ATP generating process in which molecules are oxidized and the final electron acceptor is an inorganic molecule with some exception. Two types of Cellular Respiration-  Aerobic Respiration  Anaerobic respiration
  • 11. Significance of aerobic respiration in microbes
  • 12. Anaerobic respiration In anaerobic respiration, the final electron acceptor is an inorganic substance other than the O₂ . Because, only part of the Krebs cycle operates under anaerobic conditions, and since not all the carriers on he ETS participate in anaerobic respiration, The ATP generation is never as high as in aerobic respiration.
  • 16. CONCLUSION From the above discussion we can conclude that Carbohydrate metabolism pathways plays a crucial role in microbial metabolism. There are more other pathways such as Lipid and protein metabolism as well but Carbohydrate is their main source of energy and microbes normally doesn’t utilize other sources as long as Carbohydrate is present.
  • 17. REFERENCE • ‘Microbiology- An introduction’ by Tortora, Funke, Case • Prescott’s microbiology • Microbiology by Michael Pelczar jr • Lehninger Principles of Biochemistry (7th international edition) • https://www.ncbi.nlm.nih.gov • https://www.slideshare.net