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(A) The absorption of glucose and amino acids is mediated by carrier ions like $Na^+$. The concentration of $Na^+$ is higher in the intestinal lumen c

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amino acids and glucose

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(A) The absorption of glucose and amino acids is mediated by carrier ions like $Na^+$. The concentration of $Na^+$ is higher in the intestinal lumen compared to the mucosal cells. $Na^+$ moves into the cells along its concentration gradient,and simultaneously,glucose or amino acids are transported into the intestinal cells via symport. Thus,$Na^+$ diffuses into the cell and drags glucose or amino acids along with it. The intestinal $Na^+$ gradient serves as the immediate energy source for this secondary active transport. Fructose absorption occurs via facilitated diffusion,which does not require energy and is independent of $Na^+$ transport.

Column-$I$	Column-$II$
$a$. Mouth	$i$. Absorption of water and salt
$b$. Stomach	$ii$. Absorption of amino acids
$c$. Small intestine	$iii$. Absorption of alcohol
$d$. Large intestine	$iv$. Absorption of some drugs

Carrier ions like $Na^+$ facilitate the absorption of substances like

Similar Questions

Which of the following is absorbed in the large intestine?

Match the following columns:
Column-$I$ Column-$II$
$a$. Mouth $i$. Absorption of water and salt
$b$. Stomach $ii$. Absorption of amino acids
$c$. Small intestine $iii$. Absorption of alcohol
$d$. Large intestine $iv$. Absorption of some drugs

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Which organ is responsible for the maximum absorption of digested food?

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