Question 1

What is the primary function of a microbial fuel cell (MFC)?

Accepted Answer

To convert organic matter into electrical energy

Answer

To produce heat energy

Answer

To generate hydrogen fuel

Answer

To purify water

Question 2

Which microorganism is commonly used in microbial fuel cells to facilitate electricity generation?

Accepted Answer

Geobacter sulfurreducens

Answer

Saccharomyces cerevisiae

Answer

Escherichia coli

Answer

Staphylococcus aureus

Question 3

What type of materials are typically used as the anode in a microbial fuel cell?

Accepted Answer

Conductive materials like graphite or carbon cloth

Answer

Wood

Answer

Plastic

Answer

Ceramic

Question 4

In a microbial fuel cell, which component acts as the cathode?

Accepted Answer

A material that facilitates the reduction of electrons

Answer

Biomass

Answer

Anode

Answer

Membrane

Question 5

What is a significant environmental benefit of using microbial fuel cells?

Accepted Answer

They can treat wastewater while generating energy

Answer

They reduce carbon emissions

Answer

They eliminate all types of pollution

Answer

They produce fresh water

Question 6

Which process is primarily used by bacteria in microbial fuel cells to generate electricity?

Accepted Answer

Electrode-respiration

Answer

Fermentation

Answer

Respiration

Answer

Photosynthesis

Question 7

What role does the proton exchange membrane play in a microbial fuel cell?

Accepted Answer

It separates the anode and cathode while allowing protons to pass through

Answer

It purifies water

Answer

It generates electricity

Answer

It stores energy

Question 8

What is a common limitation of microbial fuel cells in terms of energy output?

Accepted Answer

Low power density

Answer

High operational costs

Answer

Complex installation requirements

Answer

Short lifespan of components

Question 9

What is often a primary source of organic matter used in microbial fuel cells?

Accepted Answer

Wastewater

Answer

Mineral oil

Answer

Natural gas

Answer

Pure water

Question 10

Which of the following is a potential application of microbial fuel cells?

Accepted Answer

Powering remote sensors

Answer

Heating buildings

Answer

Cooking food

Answer

Cooling systems

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