large organisms need larger area to exchange more substances.but large organisms have small surface area to volume ratio.this means that the surface is not large enough to enable gases and nutrients at the fast rate needed to keep all the cells alive.thus large organisms need special exchange surfaces to provide the body with the nutrients and gaseous exchange they require.
They need a large surface for exchange as simply diffusion will not be fast enough to provide all the cells with right amount of gas and nutrients, also simple diffusion may not reach all the cells.
Gas exchange takes place at a respiratory surface-a boundary between the external environment and the interior of the organism. For unicellular organisms the respiratory surface is governed by Fick's law, which determines that respiratory surfaces must have:a large surface areaa thin permeable surfacea moist exchange surface.
Gas exchange is important as it is the transfer of oxygen from the surroundings to individual cells in the body, required by the cells for respiration. This process produces energy, essential for the organisms survival. A waste product of respiration is carbon dioxide, which if not removed from the body by gas exchange, will be harmful.
Gas exchange in Amoeba basically takes place across the whole body surface by diffusion. With their huge surface area which is relative to the volume, single celled animals can productively get oxygen and also remove carbon dioxide via diffusion across the surface. have i helped u from this answer my name is yash verma
Gas exchange occurs in the alveoli of the lungs.
Body cells on surface are covered with keratin like materials. Those layers protects the cells
Water is lost from the gas exchange surface of terrestrial organisms because gases must be exchanged with air. Terrestrial organisms have a high water potential, therefore when the gas exchange occurs water will be lost.
By providing space and cracks in the Earth's crust.
Gas exchange takes place at a respiratory surface-a boundary between the external environment and the interior of the organism. For unicellular organisms the respiratory surface is governed by Fick's law, which determines that respiratory surfaces must have:a large surface areaa thin permeable surfacea moist exchange surface.Read more: How_does_gas_exchange_take_place
Gas exchange takes place at a respiratory surface-a boundary between the external environment and the interior of the organism. For unicellular organisms the respiratory surface is governed by Fick's law, which determines that respiratory surfaces must have:a large surface areaa thin permeable surfacea moist exchange surface.
Our body is made up of prokaryotic cells. These cells are not in the contact with the environment. So the process of diffussion cant make any difference in exchange of gasses between the multicellular boy and environment.
There is no air on the moon, to breath you would need a special suit and breathing equipment.
It has to do with the surface area to volume ratio. The cell interacts with its environment at the cell surface. If a cells volume is too large the surface area isn't sufficient to exchange the necessary oxygen/nutrients/wastes to maintain the functions of a cell.
Small organisms, like a amoeba's, have large surface area : volume ratios which means the exchange can take place by diffusion through the cell wall, the same as any other single celled organsism.
Your lungs provide a very large surface area for gas exchange.
It's a special paint applied to the hull of a boat, that surpresses the growth of organisms that would otherwise attach themselves to the hull surface.
As the surface to volume ratio increases the rate of in exchange increases too.
Soil colloids have large surface areas which can be used as sights for cation exchange, increasing the soils cation exchange capacity. The higher the cation exchange capacity in a soil, the more the soil is able to retain nutrients because the cations are suspended in the soil and are then able to be used by organisms in the soil.