MEDICAL
GALLBLADDER AND EXCRETORY SYSTEM OF THE LIVER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Add bulk to undigested food mass
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Retain water
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Feed bacteria in the colon
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Remove excess water
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Detailed explanation-1: -Humans are unable to digest cellulose because we lack appropriate enzymes (cellulase) to break down this complex substance, cellulose. Undigestible cellulose is the fibre which aids in the smooth working of the intestinal tract.
Detailed explanation-2: -Core Tip: The plant cell wall is mainly composed of cellulose and contains a high number of calories. However, it is classified as an indigestible dietary fiber, and its energy utilization is difficult. Many of the intestinal bacteria found in herbivorous horses that degrade plants are found in humans.
Detailed explanation-3: -Unlike starch, cellulose has beta acetal linkage. Since there are no enzymes available in the human body that can facilitate the breakdown of that linkage, the human digestive system cannot digest cellulose.