3. nts eBook References: Herbivores must digest cellulose, yet they lack the enzyme cellulase required for the job. How is this challenge overcome? Multiple Choice: - The presence of multiple stomachs allows for progressive digestion of cellulose. - The proventriculus secretes acids that break down cellulose in the absence of cellulase. - The crop contains sand and tiny stones that help mash and grind ingested cellulose.
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Step 1: Herbivores have a specialized digestive system that allows for the fermentation of cellulose by microorganisms in their gut. Show more…
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Herbivores do not produce enzymes that digest cellulose. How does the cellulose in their food get digested? i. Algae in their gut convert the cellulose into simple sugars. ii. Bacteria in their gut convert the cellulose into glucose. iii. Viruses in their gut convert the cellulose into simple sugars.
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Why is it impossible for humans to digest food that contains cellulose? a. There is no energy available in fiber. b. An inactive form of cellulase in human digestive tract renders it undigested and removes it as waste. c. The acidic environment in the human stomach makes it impossible to break the bonds in cellulose. d. Human digestive enzymes cannot break down the $\beta-1,4$ glycosidic linkage in cellulose, which requires a special enzyme that is absent in humans.
Cellulose is indigestible to most animals because: 1) Cellulose is not soluble in water 2) Animals lack the enzymes required to hydrolyse the β links of the cellulose 3) None of the above are correct. 4) Cellulose has no food value and therefore cannot be digested 5) Both A and B are correct
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