Question

Organisms that utilize inorganic molecules (such as hydrogen sulfide), carbon dioxide and water to form organic molecules in the absence of sunlight are called a. heterotrophs b. chemoautotrophs c. autotrophs d. photoautotrophs

Answer 1

Answer: b. chemoautotrophs

Explanation: chemoautotrophs are organisms that obtain energy, molecules, water by the oxidation of electron donors in their environments. Chemoautotrophs are able to synthesize their own organic molecules from inorganic sources. They are different from phototrophs who requires sunlight to make their own food