Question

A microorganism that derives energy from \(Fe^{2+}\) oxidation, carbon from \(CO_2\), and electrons from inorganic compounds is classified as

• A. Photoheterotroph
• B. Chemoorganotroph
• C. Chemolithoautotroph
• D. Photoautotroph

Hint:

Classification based on energy and carbon source: \[ \boxed{ \begin{aligned} \text{Chemo} &\rightarrow \text{Energy from chemicals} \text{Litho} &\rightarrow \text{Inorganic electron donor} \text{Auto} &\rightarrow CO_2 \text{ as carbon source} \end{aligned} } \] Thus, \[ \boxed{\text{Chemolithoautotroph}} \]

Answer 1

The Correct Option is C

The organism: - derives energy from chemical reactions (Chemo), - uses inorganic compounds such as \(Fe^{2+}\) as electron donors (Litho), - uses \(CO_2\) as the carbon source (Autotroph). Hence, it is classified as a \[ \boxed{\text{Chemolithoautotroph}.} \] Therefore, \[ \boxed{(C)} \]