Microbial nutrition

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Across
  1. 2. organisms that derive nutrition from the dead or decaying matter
  2. 3. organisms that derive nutrients from living hosts and cause damage
  3. 4. organisms that use light for energy and CO₂ for carbon
  4. 7. purple and green photosynthetic bacteria belong to this class
  5. 8. organisms that obtain energy by breaking down chemical compounds
Down
  1. 1. organisms that use organic carbon and chemical energy
  2. 5. organisms that obtain hydrogen or electrons from organic substrates
  3. 6. these rely totally on inorganic minerals and require neither sunlight nor organic nutrients