Carrier ions like Na+ facilitate the absorption of substances like

Fructose and some amino acids

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Amino acids and glucose

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Glucose and fatty acids

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Fatty acids and glycerol

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Solution

The correct option is: B
Explanation of the correct option:
Na+ ions facilitate the absorption of glucose and amino acids. Secondary active transport is one of the two main types – co-transport (e.g glucose and some amino acids along with inward pushing of Na+) and counter transport ( Ca2+ and H+ import outwardly as excess Na+ pass inwardly).
Explanation of the incorrect option:
Option A: Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like Na+'
Option C: Glucose, amino acids, fats, and vitamins are absorbed in the small intestine via the action of hormones and electrolytes
Option D: Fatty Acids and glycerol being insoluble reformed into very small protein-coated fat globules called chylomicrons, which are transported into lacteals (lymphatic vessels of the small intestine which absorb fats), from where; they're released in the bloodstream.

Final answer: Carrier ions like Na+ facilitate the absorption of substances like amino acids and glucose.

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Small amounts of monosaccharides like glucose, amino acids and some of electrolytes like chloride ions are absorbed by (i). However, some of the substances like fructose and some amino acids are absorbed by the mechanism called (ii). Various nutrients like amino acids and electrolytes like Na+ are absorbed into the blood by (iii).

a) i) facilitated transport ii) active transport iii) simple diffusion

b) i) simple diffusion ii) facilitated transport iii) active transport

c) i) active transport ii) facilitated transport iii) simple diffusion

d) i) simple diffusion ii) active transport iii) facilitated transport

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N a^{+}

are absorbed Into the blood by _(iii)
(i) (ii) (iii)

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