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Metabolism: autotrophs (chemolithotrophs & phototrophs)

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Last revised: Thursday, February 24, 2000
Ch. 9 (p. 179-187); Ch. 10 (p. 193-195) in Prescott et al, Microbiology, 4th Ed.
Note: These notes are provided as a guide to topics the instructor hopes to cover during lecture. Actual coverage will always differ somewhat from what is printed here. These notes are not a substitute for the actual lecture!
Copyright 2000. Thomas M. Terry

Calvin-Benson cycle

Pathway details (see handout)


Types of Autotrophs - two basic types

  1. Chemolithotrophs -- use inorganic compounds as Energy sources
  2. Phototrophs -- use light as Energy source

Group Practice


(see handout on Chemolithotrophs)

Hydrogen Bacteria

Sulfur Bacteria

Nitrifying Bacteria

Iron Bacteria


Anaerobic photosynthetic bacteria

Aerobic photosynthetic bacteria = cyanobacteria

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