Some bacteria in the deep oceans use iron as an energy source to make carbohydrates from carbon dioxide. These bacteria would be classified as ____.
A) chemoautotrophs
B) chemoheterotrophs
C) photoautotrophs
D) photoheterotrophs
E) decomposers

Question

​Some bacteria in the deep oceans use iron as an energy source to make carbohydrates from carbon dioxide. These bacteria would be classified as ____.
A) ​chemoautotrophs
B) ​chemoheterotrophs
C) ​photoautotrophs
D) ​photoheterotrophs
E) ​decomposers

Quizplus · Accepted Answer

Chemoautotrophs are organisms that use inorganic chemicals as an energy source and carbon dioxide as a carbon source to synthesize organic compounds. Since these bacteria use iron (an inorganic chemical) for energy and carbon dioxide to make carbohydrates, they fit the definition of chemoautotrophs.

​Some Bacteria in the Deep Oceans Use Iron as an Energy

Some Bacteria in the Deep Oceans Use Iron as an Energy