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प्रश्न
Write short notes on the following:
Microbial fuel cells
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उत्तर
A microbial fuel cell is a bio-electrochemical system that drives an electric current by using bacteria and mimicking bacterial interaction found in nature. Microbial fuel cells work by allowing bacteria to oxidize and reduce organic molecules. Bacterial respiration is basically one big redox reaction in which electrons are being moved around. A MFC consists of an anode and a cathode separated by a proton exchange membrane. Microbes at the anode oxidize the organic fuel generating protons which pass through the membrane to the cathode and the electrons pass through the anode to the external circuit to generate current.
संबंधित प्रश्न
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Brandy is generally a product of:
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| Bioactive Substance | Role |
| A. Statin | I. Removal of oil stains |
| B. Cyclosporin A | II. Removal of clots from blood vessels |
| C. Streptokinase | iii. Lowering of blood cholesterol |
| D. Lipase | iv. Immuno-suppressive agent |
Choose the correct match:
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\[\ce{Fumaric acid + H2O ->['A']Malate}\]
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Citric acid
Match the following organic acid from column - I with their use in column - II.
| Column - I | Column - II | ||
| i. | Acetic acid | a. | Confectionary |
| ii. | Citric acid | b. | As a wetting agent |
| iii. | Fumaric acid | c. | Medicine |
| iv. | Gluconic acid | d. | Vinegar |
What is the scientific name of Brewer's yeast used to ferment malted cereals and fruit juices into ethanol?
