Which mechanism(s) of obtaining energy and nutrients are only present in bacteria and archaea, but not eukaryotes?
A)photoautotrophs only
B)chemoautotrophs only
C)photoheterotrophs only
D)chemoheterotrophs and chemoautotrophs
E)chemoautotrophs and photoheterotrophs

Question

Quizplus · Accepted Answer

Chemoautotrophs and photoheterotrophs are mechanisms of obtaining energy and nutrients unique to bacteria and archaea. Chemoautotrophs obtain energy by oxidizing inorganic substances, while photoheterotrophs use light for energy but obtain carbon from organic compounds, both processes not found in eukaryotes.

Which Mechanism(s) of Obtaining Energy and Nutrients Are Only Present