Which one of the following pairs of food comp | vedclass

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(B) The correct answer is $B$. $1$. Saliva contains salivary amylase,which begins the digestion of starch in the mouth. Therefore,starch does not reac

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Fat and cellulose

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(B) The correct answer is $B$. $1$. Saliva contains salivary amylase,which begins the digestion of starch in the mouth. Therefore,starch does not reach the stomach completely undigested. $2$. Saliva does not contain any lipase,and the stomach lacks fat-emulsifying agents (bile salts),so fat remains largely undigested until it reaches the small intestine. $3$. Humans lack the enzyme cellulase required to digest cellulose; therefore,cellulose passes through the digestive tract completely undigested. $4$. Proteins begin their digestion in the stomach due to the action of pepsin and hydrochloric acid. Thus,fat and cellulose reach the stomach in an undigested state.

Which one of the following pairs of food components in humans reaches the stomach totally undigested?

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