Osmosis and Diffusion
Osmosis and Diffusion: Overview
This Topic covers sub-topics such as Osmosis, Isotonic Solutions, Hypotonic Solutions, Hypertonic Solutions, Simple Diffusion and, Diffusion of Gases Across Plasma Membrane
Important Questions on Osmosis and Diffusion
Diffusion is the movement of particles from an area of lower concentration to higher concentration .
In hypotonic condition, concentration of the external and the internal solution of the organism are same.
Following are a few definitions of osmosis. Read carefully and select the correct definition.
A teacher soaked 10g raisins in 35ml of distilled water in a beaker A and similar amount in beaker B. She maintained the temperature of beaker A at 20oC and beaker B at 40oC. After an hour compare the percentage of water absorbed by raisins in beaker A and B.
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?
Why is osmoregulation necessary in case of aquatic animals?
How is water absorbed by plants from the soil?
How does cell to cell movement of water take place in plants?
Differentiate between diffusion and osmosis.
Which type of molecules diffuse in the process of osmosis?
Following are a few definitions of osmosis:
Read carefully and select the correct definition:
What is the consequence of the following condition?
A cell having low water concentration than the surrounding medium.
In brief, state what happens when a red blood cell is kept in concentrated saline solution?
How do substances like carbon dioxide (CO2) and water (H2O) move in and out of the cell?
If you are provided with some vegetables to cook. You generally add salt into the vegetables during the cooking process. After adding salt, vegetables release water. What mechanism is responsible for this?
A person takes a concentrated solution of salt, after some time, he starts vomiting. What is the phenomenon responsible for such a situation? Explain.
Following are a few definitions of osmosis. Read carefully and select the correct definition.
