Biofuels are mainly produced by

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Biofuels are mainly produced through the breakdown of cell wall biopolymers (such as cellulose and hemicellulose) into sugars that can be fermented to produce fuels such as ethanol. This process is known as bioconversion, and it can be carried out by microorganisms such as yeast and bacteria. Plants can also be used as a source of biofuels, through the extraction of oils from their seeds or the conversion of their starches into ethanol. However, the conversion of hemicellulose into gasoline (choice B), the genetic engineering of ethanol-generating genes into plants (choice C), and the use of transgenic crops containing ethylene (choice D) are not currently major methods for biofuel production.

Biofuels Are Mainly Produced by