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(D) $1$. In the stomach, protein digestion begins with the enzyme pepsin, which breaks down some proteins into smaller peptides (amino acids). However

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$(d)$

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(D) $1$. In the stomach, protein digestion begins with the enzyme pepsin, which breaks down some proteins into smaller peptides (amino acids). However, digestion is incomplete, so the chyme leaving the stomach contains protein, amino acids, and water.$2$. In the small intestine, the remaining proteins are fully broken down into amino acids by proteases (like trypsin). These amino acids and water are then absorbed into the bloodstream. Therefore, the substances leaving the small intestine (entering the large intestine) are primarily water and undigested material, as amino acids are absorbed.$3$. Comparing the options, option $(d)$ correctly identifies that protein, amino acids, and water leave the stomach, and water is the primary substance remaining after absorption in the small intestine.

Option	Leaving the stomach	Leaving the small intestine
$(a)$	Amino acids, glycerol and water	Amino acids and water
$(b)$	Fatty acids, glycerol and water	Fatty acids, glycerol and water
$(c)$	Protein and water	Fatty acids and glycerol
$(d)$	Protein, amino acids and water	Water

Column $(A)$	Column $(B)$
$(a)$ Trypsin	$(i)$ Pancreas
$(b)$ Amylase	$(ii)$ Liver
$(c)$ Bile	$(iii)$ Gastric glands
$(d)$ Pepsin	$(iv)$ Saliva

Similar Questions

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Match the terms in Column $(A)$ with those in Column $(B)$:
Column $(A)$ Column $(B)$
$(a)$ Trypsin $(i)$ Pancreas
$(b)$ Amylase $(ii)$ Liver
$(c)$ Bile $(iii)$ Gastric glands
$(d)$ Pepsin $(iv)$ Saliva

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