Biology
In what way is active transport opposite to diffusion?
Roots Absorption
78 Likes
Answer
| Diffusion | Active transport |
|---|---|
| Diffusion is the free movement of molecules of a substance (solute or solvent, gas, liquid) from the region of their higher concentration to the region of their lower concentration when the two are in a direct contact. | It is the movement of a salt or an ion from a region of its lower concentration to a region of its higher concentration through a living membrane. |
Answered By
52 Likes
Related Questions
List three main characteristics of the roots that enable them to draw water from the soil.
Write true or false.
(i) Diffusion is the movement of molecules from a region of their lower concentration to that of a higher one.
(ii) Osmosis includes diffusion, but not vice versa.
(iii) Osmosis is unidirectional.
(iv) Exosmosis may cause bursting of a cell.
(v) Semi-permeable membrane prevents the passage of the solute molecules.
(vi) In an experiment on osmosis, if external pressure is applied on a dilute solution, less water will pass into the concentrated solution.
A cell kept in a certain solution bursts after some time. Comment upon the kind of solution.
Which process — diffusion, osmosis or active transport, needs involvement of energy?