diffusion and osmosis animation

It is a process involving net diffusion of water molecules from a region of higher water concentration to a region of lower water concentration through a semipermeable membrane. The osmotic movement of water from a surrounding medium into a cell is called endosmosis. Such a medium is desc..

Matter..

Summary - Excretion is the elimination of waste products from the body. The non - volatile products are mainly excreted in the urine. The urinary system consists of those organs which form, store and void urine. The nitrogenous wastes are mainly produced by catabolism of proteins. Animals..

Introduction - In unicellular organisms a single cell carries out all the life processes as the cell itself is the organism. In advanced forms like the few-celled algae, protozoa, sponges, etc., the size of the organism ensures that all the cells are not very far from each other. The uptake of mate..

Physical Processes - The physical processes involving movement of materials in and out of a cell are diffusion and osmosis. Both these movements involve movement along the concentration gradient. Hence, there is no expenditure of ener..

The physical processes involving movement of materials in and out of a cell are diffusion and osmosis. Both these movements involve movement along the concentration gradient. Hence, there is no expenditure of energ..

The transport of materials across the cell membranes with the help of energy is called active transport. Both diffusion and osmosis are passive transport mechanisms, not requiring energy. Active transport helps in the transport of ions across the membranes of the cells. The min..

This involves the absorption of food in the soluble form from the region of digestion into the tissues or into where it has to be utilised or into the blood stream which transports it to the different tissues. This takes place through the cell membranes. The absorption may be passive or active. Pa..

The absorption of certain nutrients and water takes place by passive absorption. In this process, there is no expenditure of energy. The absorption depends on the concentration gradient across the cell membranes of the villi. If the nutrients are more in concentration in the lumen they are absorbe..

Question: Reabsorption of chloride ions from the glomerular filtrate in the kidney tubule is carried out by 1. Osmosis 2. Diffusion 3. Active transport 4. Brownian movement Answer: ..