Question

Prepare a report on role of diffusion and osmosis in your body at different situations. write on 20 lines.

Answer 1

Role of Osmosis :— (1) Kidney Dialysis is a crucial modern medical application that relies on osmosis. (2) Our cells have semipermeable membranes that do not allow salt particles to flow in and out. The only way to “water down” an over-salted cell is to allow water to move back and forth. Thus, while drinking water when dehydrated, we are reaching equilibrium in our cells by filling them up with water. (3) Cholera would not be possible without osmosis. The choleric bacteria populate in our intestines and begin to reverse the intestinal cells' ionic orientation / divert the water transportation towards our intestines. (4) Often, people find pruned fingers after bathing for a lot of time; actually they are expanding/bloated. This explains the idea of osmosis: moving from a less concentrated substance to a more concentrated substance. So here, the water in the bathtub is less concentrated and it is trying to cause equilibrium by using osmosis to get into your body. (5) In the digestive system, osmosis plays a key role in nutrient absorption. After your digestive system has broken down food using mechanical and chemical processes, your body is left with the key nutrients it needs to survive. Osmosis allows your body to absorb these nutrients into the intestines and individual cells. Role of Diffusion: — (a) Diffusion is important in the body as it's the way oxygen travels from the air in our lungs to red blood cells in our blood. (b) By this process, carbon dioxide travels from our blood to our lungs from where it can then be exhaled. (c) The cells also take up some of their nutrients from the blood by diffusion. (d) Diffusion is also responsible for our nerves to function, as the neurotransmitter diffuses across the synaptic cleft so that the next nerve cell can pick up the signal and pass it along. (e) It is the basic way in which all nutrients, gases and wastes move in the body [unless active transport is required]. {P.S.- You can further expand the points, if you want to.}