Answer:

Explanation:

Lack of appropriate enzymes is the reason why humans cannot digest cellulose. Cellulose is known to be found abundantly in plant tissues and is also known to be a common component of our diet. The enzyme to digest cellulose is cellulose, and we humans do not have that in our digestive system.

Many nutritionists or dieticians state that cellulose is very useful for food to move through the digestive tract quickly and efficiently. The cellulose which is not digested can be known as fibre which in turn helps the smooth working of the intestinal tract.

Having stated that humans do not possess the cellulase, even animals such as cows and sheep do not make those enzymes too. But, their digestive system has the right conditions in their gut to provide a home for microorganisms that are known to produce cellulose to digest cellulose.

Hope this helps

Answer:

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