Which Organism Obtains Energy by Removing Electrons from Inorganic Molecules

Question

Which organism obtains energy by removing electrons from inorganic molecules?  
A) Chemoautotroph
B) Chemoheterotroph
C) Photoautotroph
D) Photoheterotroph
E) Electroautotroph

Accepted Answer

Chemoautotrophs obtain energy by removing electrons from inorganic molecules through a process known as chemosynthesis. They are able to use this energy to produce organic compounds from carbon dioxide. Examples of chemoautotrophs include bacteria found in deep-sea hydrothermal vents, which obtain energy from hydrogen sulfide and other chemicals in the water.