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Consider the following statements regarding Microbial Fuel Cells (MFCs).
  1. These are devices that convert chemical energy to electrical energy by the oxidation of organic molecules by the action of microorganisms.
  2. No moving electrons or cathode/anode are required in an MFC.
Which of the above statements is/are correct?
  • a)
    1 only 
  • b)
    2 only 
  • c)
    Both 1 and 2 
  • d)
    Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Consider the following statements regarding Microbial Fuel Cells (MFCs...
A microbial fuel cell (MFC) is a bio-electrochemical device that harnesses the power of respiring microbes to convert organic substrates directly into electrical energy.
At its core, the MFC is a fuel cell, which transforms chemical energy into electricity using oxidation reduction reactions. The key difference of course is in the name, microbial fuel cells rely on living biocatalysts to facilitate the movement of electrons throughout their systems instead of the traditional chemically catalyzed oxidation of a fuel at the anode and reduction at the cathode.
A MFC consists of an anode and a cathode separated by a cation specific membrane. Microbes at the anode oxidize the organic fuel generating protons which pass through the membrane to the cathode, and electrons which pass through the anode to an external circuit to generate a current. The trick of course is collecting the electrons released by bacteria as they respire.
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Most Upvoted Answer
Consider the following statements regarding Microbial Fuel Cells (MFCs...


Microbial Fuel Cells (MFCs)

Microbial Fuel Cells (MFCs) are devices that convert chemical energy to electrical energy by the oxidation of organic molecules by the action of microorganisms.

Correct Statement Analysis

- Statement 1: This statement is correct. MFCs work by harnessing the metabolic activity of microorganisms to generate electricity through the oxidation of organic matter.

- Statement 2: This statement is incorrect. In MFCs, moving electrons, as well as cathode and anode, are essential components for the conversion of chemical energy to electrical energy.

Therefore, the correct answer is option 'A', which states that only statement 1 is correct.
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Consider the following statements regarding Microbial Fuel Cells (MFCs). These are devices that convert chemical energy to electrical energy by the oxidation of organic molecules by the action of microorganisms. No moving electrons or cathode/anode are required in an MFC.Which of the above statements is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?
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