What Is Lithotrophy

question 61

Multiple Choice

What is lithotrophy?

• A) breakdown of molecules using light energy
• B) oxidation of organic electron donors to CO₂ and H₂O
• C) photolysis of H₂S or H₂O coupled to CO₂ fixation
• D) oxidation of inorganic electron donors such as Fe²⁺ using O₂ or anaerobic electronic acceptors
• E) physical breakdown of food particles to facilitate ingestion

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Definitions:

Microorganisms

Tiny, usually microscopic, life forms, including bacteria, viruses, fungi, and protozoa, that can have diverse roles in various ecosystems and human health.

Mycobacterium

A genus of bacteria known for causing diseases such as tuberculosis and leprosy in humans.

Tuberculosis

Tuberculosis is an infectious disease caused by the bacterium Mycobacterium tuberculosis, affecting the lungs and potentially other parts of the body.

Leprosy

A chronic infectious disease caused by Mycobacterium leprae, characterized by skin lesions and nerve damage.