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CHEMOAUTOTROPHS Use electrons from reduced inorganic compounds as their energy source and carbon from carbon  dioxide. Energy sources include hydrogen sulfide, elemental sulfur, ammonia, nitrite, hydrogen  gas and iron. These produce ATP by oxidative phosphorylation.    CHEMOHETEROTROPHS Energy and carbon both come from organic compounds, and the same compound can provide  both. Specifically, their energy source is electrons from hydrogen atoms in organic compounds.  Saprophytes—live on dead organic matter Parasites—nutrients from a living host This group (chemoheterotrophs) includes most bacteria as well as all protozoa, fungi, and  animals. All microbes of medical importance are included in this group.    METABOLIC PATHWAYS OF ENERGY USE  (ANABOLISM) A good bit of the energy from nutrients is given off as heat. The remaining energy is used to  synthesize ATP. Uses of ATP:
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This note was uploaded on 01/23/2012 for the course MCB MCB2010 taught by Professor Smith during the Fall '09 term at Broward College.

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