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  • We eat food composed of all the nutrients like carbohydrates, proteins, fats, vitamins, minerals and water. After digestion, these are absorbed in the form of glucose, amino acids, fatty acids, glycerol etc.

We eat food composed of all the nutrients like carbohydrates, proteins, fats, vitamins, minerals and water. After digestion, these are absorbed in the form of glucose, amino acids, fatty acids, glycerol etc.

What mechanisms are involved in absorption of digested food and water?

Answers (1)

Answer:

Various methods of absorption of food:

1. Diffusion:  It is a physical process which does not need a membrane. The movement of substance is from higher concentration to lower concentration.

For example, this the process which food is distributed equally throughout the cell.

2. Facilitated: These require carrier proteins for the transportation of substances which does not works against the concentration gradient.

For example, Fructose absorption through cell membrane.

3. Active transport: This process requires carrier proteins and ATP energy for the movement against concentration gradient.  

For example, movement of glucose and amino acids through membrane.

4: Osmosis: Movement of solvent from higher concentration to lower concentration.

For example, Water is absorbed through this process.

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