Question

Using Non-Food Crops to Make Biofuels (7)of cellulose are made up of sugars. These form of (9). Ône common A major constituent of green plants is cellulose. The the (8)of plants. Ethanol could be produces by extracting the sugars and allowing them to North America plant that could be used in this method is productive source of ethanol than currently being used for agriculture and is not (10). Some scientists believe that this would be a more (11). Additionally, the source plant materials could be grown in ground which is not (12) valuable.

Answer 1

Ответ:

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Answer 2

Using Non-Food Crops to Make Biofuels

A major constituent of green plants is cellulose. Cellulose makes up around 70% of plant matter by dry weight It is a structural component of the cell walls of plants and is one of the most abundant organic polymers on Earth.

Cellulose is made up of long chains of glucose molecules. Glucose molecules can be broken down into simple sugars through processes like acid hydrolysis or enzymatic hydrolysis These simple sugars can then be fermented by microorganisms like yeast to produce ethanol.

One common plant that could be used for producing ethanol from cellulose is switchgrass. Switchgrass is a highly productive source of biomass in North America that grows well on marginal land not suitable for food crop agriculture. It requires few agricultural inputs like water and fertilizer. Perennial grasses like switchgrass can be grown on land that is not suitable for food crops

Some scientists believe that using cellulosic feedstocks like switchgrass to produce ethanol would be more sustainable than using food crops like corn. The source plant materials could be grown on land that is not suitable for food agriculture and would not compete with food production. Additionally, perennial grasses store carbon in their root systems, reducing greenhouse gas emissions compared to annual food crops