MICROBIOLOGY - M.H. Serhiichuk - 2008

Chapter 5. MICROBIAL METABOLISM

Self-Assessment Questions

1. Name the components of METABOLISM. Through which compounds is The Link Between Catabolic and anabolic reactions established? Identify the metabolic pathways that can be considered amphibolic. What is the function of anaplerotic reactions?

2. Outline the stages of hexose degradation in chemoorganotrophic microorganisms. At which stages is ATP synthesized via substrate-level phosphorylation, and at which via Oxidative Phosphorylation?

3. Compare the three Pathways of hexose degradation in microorganisms in terms of ATP yield and reduced equivalents.

4. Describe the Similarities and differences in the Structure and function of the respiratory chains of chemoorganotrophic and chemolithotrophic microorganisms. How can the low biomass yield during the growth of chemolithotrophic microorganisms be explained?

5. What is The Significance of exogenous electron Donors for phototrophic microorganisms? What metabolites are produced when phototrophs utilize reduced sulfur compounds and Water as exogenous electron donors?

6. In which microorganisms is Photosynthesis mediated by carotenoids? How do photoreactions contribute to the survival of these microorganisms under extreme environmental conditions?

7. What is the function of the Hydrogenase complex in a bacterial Cell? Why does Nitrogen Fixation require a high energy input?

8. Through which pathways do microorganisms assimilate carbon dioxide, formaldehyde, and acetate?



Last update: 13/08/2026

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