Microbial Metabolism

 

Readings Presentations Multiple Choice Quizzes Key Terms Questions Updated 13/02/01

A strange thing has occurred in America. I am not sure that it has
ever occurred before. The teachers wish to make learning easy.
They desire to peptonize and sweeten the food. Their little books
are soft biscuit for weak teeth, easy reading on great subjects;
but these books are filled with a pervading error; they contain
a subtle perversion of education. Learning is not easy but hard.
John Jay Chapman

Who am I? I studied the structure of antibodies and developed the first plausible model of the IgG molecule for which I received the Nobel Prize in 1972,

 

Readings Microbial Metabolism
Baron
Medical Microbiology
Chap 4
Bacterial Metabolism
 Brock 9th Ed
Biology of Microorganisms
Chap4
Nutrition and Metabolism
Tortora:
Microbiology An Introduction
Chap 5
Microbial Metabolism		 Jacquelyn Black 4th Ed
Microbiology:
Principles & Explorations
Chap 5
Essential Concepts of Metabolism
Presentations Slides Web Animation Download
Fermentation  
Respiration  
Electron Transport  
Photosynthesis  
Nutrients  

 

DEFINE THE FOLLOWING KEY TERMS:
metabolism catabolism anabolism enzymes substrate
turnover number cofactor coenzyme Chemoheterotrophs FAD
ADP ATP coenzyme A Ribozymes Oxidation
Reduction Chemoautotrophs anaerobe electron transport chain Glycolysis
Krebs Cycle Cellular respiration Fermentation Embden Meyerhoff Pathway saprophyte
chemiosmosis aerobic respiration proton pump EnterDoudoroff Pathway parasite
phototroph anaerobic respiration Anoxygenic phototrophs Oxidative phosphorylation NAD+
Autotroph Chemotroph oxygenic phototrophs Substrate Level phosphorylation aerobe
photoautotrophs photoheterotrophs      

SHORT ANSWER QUESTIONS

  1. Describe the chemical reactions of glycolysis
  2. Explain the products of the Krebs cycle
  3. Describe the chemiosmotic model of ATP generation
  4. Compare and contrast two forms of phosphorylation
  5. Describe the function of each photosystem used in green plant and cyanobacterial photosynthesis
  6. Describe hoe non- cyanobacterial photosynthetic organisms form a reducatant in the absence of photosystemm II
  7. Describe how lipids and proteins are prepared for glycolysis
  8. Explain what is meant by oxidation-reduction
  9. Those organsims that utilize an anaerobic respiration pathway have electron transport chains which operate along the same priciple as in organisms using aerobic respiration, only the final electron acceptor is NO3, SO4 or CO2. Althoug this process generates more energy than fermentation, it produces less energy than aerobic respiration. Why might that be?
  10. One thing that we know about bacteria is that they are found in virtually every envirnment. from boiling sulfur springs to the subartic tundra to hydrothrmal vents on the ocean floor. For instance, the microbe Pyrococcus furiosus is found on the thermal seafloor vents where temperatures approach 100 C. All these organisms depend upon the reliable functioning of enzymes to insure metabolic order. How do these organisms survive in such varied habitats with enzymes that are made of proteins?
  11. Describe how energy is captured during oxidative phosphorylation