Chemoautotrophs are organisms that use inorganic molecules (such as ammonia, hydrogen sulfide, or iron) to obtain energy, which they use to produce organic compounds from CO2 through a process called chemosynthesis. They do not require light as a source of energy and can be found in both bacterial and archaeal species.

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Chemoautotrophs

Question 252

Multiple Choice

Chemoautotrophs

A) use organic molecules as a source of energy.
B) cannot incorporate CO₂ into carbohydrates.
C) require light to grow.
D) include only bacterial species.
E) oxidize inorganic molecules as a source of energy.

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