Biology - Digestion and Absorption Question with Solution | TestHub

Absorption of substances in the intestine occurs by simple diffusion, facilitated transport, or active transport.

Active transport occurs against the concentration gradient and hence requires energy in the form of ATP.

Various nutrients like amino acids, monosaccharides like glucose, and electrolytes like $N{a}^{+}$ are absorbed into the blood by active transport.

Answer: Active transport