__________ and __________ are unique in that they fix CO₂ as their sole carbon source. A) Organotrophs; iron oxidizers B) Photoheterotrophs; chemiolithotrophs C) Photoautotrophs; lithotrophs D) all of the above E) none of the above

Question

Quizplus · Accepted Answer

Photoautotrophs and lithotrophs are the only organisms that can fix CO2 as their sole carbon source. Organotrophs use organic compounds as their source of carbon while iron oxidizers utilize iron. Photoheterotrophs obtain their carbon from organic compounds and use light as a source of energy, while chemolithotrophs obtain their energy from inorganic compounds and use CO2 as a source of carbon.

__________ and __________ Are Unique in That They Fix CO2

and Are Unique in That They Fix CO₂