Describe the activity of osmosis
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a) Experiment involving potato and sugar solution is called as potato osmoscope. This experiment directly explains the phenomenon of osmosis.Osmosis is the movement of water molecules from a region of lower concentration of solute to a region of higher concentration of solute through a semipermeable membrane.
Potato placed in water become firm and increase in size. This can be explained by an experiment called as potato osmoscope.
*Peel a potato and scoop a part of potato at the centre to make a hollow cup.
*Sugar solution is present in the hollow cup in potato. Potato is half submerged in the water. After some hours, it is observed that level of sugar solution is increased due to entry of water into the potato. Here potato acts as a semipermeable membrane.
b) Blood transports carbon dioxide in three different ways namely, in the dissolved state, in the form of bicarbonate and in the combined form with amine group of protein. Gaseous exchange occurs between alveoli and the blood capillaries by a process of simple diffusion. There exists a pressure difference of O2 and CO2 between the alveoli and the blood in the capillary which makes CO2 diffuse from capillary blood into alveoli. This CO2 is released into the atmosphere by expiration process.
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a) Experiment involving potato and sugar solution is called as potato osmoscope. This experiment directly explains the phenomenon of osmosis.Osmosis is the movement of water molecules from a region of lower concentration of solute to a region of higher concentration of solute through a semipermeable membrane.
Potato placed in water become firm and increase in size. This can be explained by an experiment called as potato osmoscope.
*Peel a potato and scoop a part of potato at the centre to make a hollow cup.
*Sugar solution is present in the hollow cup in potato. Potato is half submerged in the water. After some hours, it is observed that level of sugar solution is increased due to entry of water into the potato. Here potato acts as a semipermeable membrane.
b) Blood transports carbon dioxide in three different ways namely, in the dissolved state, in the form of bicarbonate and in the combined form with amine group of protein. Gaseous exchange occurs between alveoli and the blood capillaries by a process of simple diffusion. There exists a pressure difference of O2 and CO2 between the alveoli and the blood in the capillary which makes CO2 diffuse from capillary blood into alveoli. This CO2 is released into the atmosphere by expiration process.
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This experiment directly explains the phenomenon of osmosis.Osmosis is the movement of water molecules from a region of lower concentration of solute to a region of higher concentration of solute through a semipermeable membrane......
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