What is a chemolithotroph?

Answer 1

There are two classes of chemotrophs (lifeforms that obtain energy by oxidizing metal or other substances)

• chemoautotrophs - derive carbon from carbon dioxide
• chemoheterotrophs - obtain carbon when oxidizing organic molecules

An example of the chemoautotroph are deep-sea bacteriathat oxidize iron or manganese in conditions where there is insufficient sunlight for photosynthetic life.

An example of the organic material oxidizers (chemoheterotrophs) are some plants like fungi, which break down preformed organic molecules. All animals are chemoheterotrophs, because they metabolize other animal and plant molecules.

Answer 2

Chemotrophs are organisms that obtain energy by the oxidation of electron donating molecules in their environments

=as on wikipedia