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How does oxygen pass from alveoli into blood? Is this process passive, like osmosis, or is the membrane active? That is, does it resemble cell membranes, where the integrated membrane proteins are actively transporting chemicals?
During the inhalation, we inhale the atmospheric air which contains not only the molecular oxygen but nitrogen and several other gases. In alveoli, oxygen has a greater concentration than it...
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What is the difference between fusion, diffusion and osmosis?
Let's go with diffusion and osmosis. Diffusion is the net movement of a substance from a region of higher concentration to a region of lower concentration down a concentration...
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Why do diffusion and osmosis occur?
This is the net movement of ions or molecules that move to lower concentration for a higher concentration. molecules move to the place where there is lower concentration...
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Is Osmosis a simple diffusion or a facilitated diffusion?
is the movement of solvent particles (mostly water) down a concentration gradient through a partially permeable membrane. It is basically the diffusion of water molecules. This is simple diffusion,...
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Where does the energy needed for the movement of molecules in diffusion and osmosis come from?
Energy for any movement is in the form of kinetic energy. This includes movement in the form of and . Kinetic energy comes from all sorts of places, as...
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What are some similarities and differences between osmosis and diffusion?
Similarity -They both account for movement of molecules from a region of high concentration to a region of low concentration. Difference -As for osmosis;the movement of molecules are via a...
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What are the differences between diffusion, osmosis, facilitated diffusion & active transport? How are these processes related to transport across cell membranes?
1) : Is the movement of molecules / ions from a region of higher to lower concentration. It may or may not occur across a semi permeable membrane. In...
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How does surface area affect osmosis?
How does the water potential affect osmosis?
Osmosis is a passive process and involves the of water molecules from where there is a high water potential to where there is a lower water potential down the water...
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What is diffusion? What is facilitated diffusion? What is osmosis?
Diffusion is the tendency of a substance to move from high concentration to low concentration. Consider a that is permeable to glucose. On the right side of the membrane, there...
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What does diffusion, facilitated diffusion, osmosis, exocytosis, endocytosis, pinocytosis and phagocytosis all have in common? What makes them all different from each other?
is used to transport small non polar and non charged particles down concentration gradient. Facilitated diffusion is to transport small polar or small charged particles down concentration gradient,...
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