Question:

Ruminant animals can digest cellulose in their food, where as human beings are unable to do so. This is because

Updated On: Feb 23, 2024
  • Cellulose reduces the bulk of food
  • Methanogens are absent in human gut
  • Methanogens re present in human gut
  • Cellulose is a complex sugar b
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The Correct Option is B

Solution and Explanation

Methanogens are bacteria that produce methane during the breaking down of substrates like cellulose. Plants are the major food consumed by ruminant animals. Cellulose is a polymer of glucose found in the cell wall of plants. The gut of the ruminant animals have methanogens that help in the digestion of cellulose and produce methane. Methanogens are absent in the case of human beings. Because of this reason, humans are unable to digest cellulose.
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Concepts Used:

Microbes in Human Welfare

There are several valuable microorganisms that are beneficial to humans in various manners such as:

In Household Products

  1. Fermentation of milk to produce yogurt.
  2. Milk cuddling to compose curd, cheese, and paneer.

In Industrial Products

  1. Production of beverages such as wine, beer, whiskey, brandy, or rum.
  2. Production of antibiotics such as Penicillin and other chemical substances to kill or retard the expansion of disease-causing microbes.

Fermented Beverages

  1. A fermentor is used to produce microbes on a large scale for industrial purposes.
  2. The brewer’s yeast (Saccharomyces cerevisiae) is used to make ethanol. At this time, the yeast ferments malted cereals and fruit juices.

Antibiotics

  1. The term antibiotic means “against life”. These materials can kill or destroy the growth of other microbes.