Discuss mechanisms of absorption. | Class 11 Biology Chapter Digestion and Absorption, Digestion and Absorption NCERT Solutions

Question:

Discuss mechanisms of absorption.

Answer:

Absorption of digested food happens through passive, active or facilitated transport mechanism.

  • Simple diffusion: It is a type of passive transport. It is simply the movement of solute which occurs when its electrochemical potentials on the two sides of a permeable barrier are different.
  • Facilitated diffusion: The movement of molecule can occur both in direction and opposite of the concentration gradient.
  • Transport of fatty acids and glycerol: These substances cannot be absorbed into the blood because these are insoluble. Firstly these are converted into small droplets called micellar and transported to the intestinal mucosa. These micelles are converted into very small protein coated globules called chylomicrons. These are transported into lymph vessels in the villi and then lymph vessels release them into the blood stream.


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Welcome to the NCERT Solutions for Class 11 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 3: Discuss mechanisms of absorption.....

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