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If vegetables become wilted they can often be made crisp again by soaking them in water . However may lose a few nutrients during this process. Using the concept of diffusion and concentration?
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What drives Facilitated diffusion?
Facilitated diffusion is a passive process whereby a molecule is "carried" across a semi-permeable membrane by a channel or protein carrier. Like diffusion, this process requires no energy, however, since passive diffusion can drive movement against a concentration gradient it is not really diffusion.
Whats the difference between osmosis and diffusion?
In diffusion, molecules travel from a higher concentration to a lower concentration. When you put a drop of ink in a glass of water, the spreading of the ink in the water is called diffusion. Similarly, if you spray an air freshener in one corner of a room, eventually people on the other side of the room will be able to smell it as well because the scent has diffused. In osmosis, molecules also travel from higher concentration to a lower concentration. However, osmosis specifically refers to the movement of WATER molecules. Both of these types of transport are examples of passive transport, which requires no energy.
What if a cell has a lower concentration outside the cell?
There are two basic ways that individual molecules can enter (or leave) a cell.1. Diffusion. This is the movement of particles from a region of high concentration to a region of low concentration. So if the concentration of the molecule is higher outside the cell it can enter by diffusion. However diffusion can only take place down a concentration gradient ie from a high to a low concentration.2. Active transport. This is the movement of particles against their concentration gradient (ie from a low to a high concentration), using energy provided by the cell (ie ATP produced by respiration). So if a molecule is at a higher concentration inside the cell it can only be absorbed by active transport.
What are the effects of potato soaked in salt water?
vegetables taste better when the salt has been added during coking rather than from the siler one of the effects of cooking vegetables in salted water is that the flavour is improved... however through the process of osmosis some nutrients can be lost this is because they will be moving out of the vegetable to the outside where there is a higher concentration of salt
What is the relationship between concentration gradient and active and passive transport?
Concentration gradient= the relative amount of a given substance contained within a solution or in a particular volume of space; the amount of solute per unit volume of solution • the action of strengthening a solution by the removal of water or other diluting agent or by the selective accumulation of atoms or molecules. Diffusion= net movement of particles from an area of higher concentration to an area of lower concentration The concentration gradient is the amount of substance in a particular area (the substance stays together) Diffusion is when the substance gradually spreads out in its' area. e.g: If you spray perfume in a room, eventually you can smell it all around the room because of diffusion. However if you spray the perfume in the room and it just stays in one spot, that is the concentration gradient.
What is diffusion research?
Diffusion of water is osmosis; diffusion of other materials is just called diffusion. However, they are both diffusion, or when something spreads from high concentration of the substance to low concentration.
What is the difference between diffusion and active transport?
Diffusion is the movement of molecules from areas of high concentration to areas of low concentration and active transport is the movement of molecules from an area of low concentration to an area of high concentration
What is the movement of molecules from great concentration to lesser concentration?
The movement of molecules from great concentration to lesser concentration is called diffusion. However when dealing water molecules it is referred to as osmosis.
Why is facilitated diffusion faster than simple diffusion?
Facillatated diffusion is faster than simple diffusion when solute concentration is low because it uses channels to transport molecules throught the lipid bilayer. Simple diffusion depends upon concentration gradients so the net movement of diffusing molecules depends on the concentration gradient, thus the rate of diffusion is directly proportional to the concentration gradient. Simple diffusion is also a type of passive transport, which requires no energy input, whereas facilitated diffusion is protein mediated transport. Passive diffusion of solute into a cell is linearly related to the concentration of solute outside the cell. Carrier proteins increase the rate of diffusion by allowing more solute to enter the cell. Facilitated diffusion, however, approaches a maximum rate as the carrier proteins become saturated with solute.
What drives Facilitated diffusion?
Facilitated diffusion is a passive process whereby a molecule is "carried" across a semi-permeable membrane by a channel or protein carrier. Like diffusion, this process requires no energy, however, since passive diffusion can drive movement against a concentration gradient it is not really diffusion.
When particles move out of a cell through diffusion the cell?
If the diffusion is moving particles from higher to lower concentration, it uses no energy from the cell; this is passive diffusion. However, if it is active diffusion, the cell is pumping out specific molecules into a higher concentration, therefore using energy.
How are diffusion and active transport different?
There are two types of diffusion. Facilitated and non facilitated. Diffusion occurs when there is a concentration gradient. That is, when an area has more concentration than the other area. Diffusion is used to transfer particles from one place to another. Active transport is used to transfer particles, usually occurring against a concentration gradient. Active transport requires energy to occur however, diffusion does not. There are two types of diffusion. Facilitated and non facilitated. Diffusion occurs when there is a concentration gradient. That is, when an area has more concentration than the other area. Diffusion is used to transfer particles from one place to another. Active transport is used to transfer particles when there is no concentration gradient. Active transport requires energy to occur however, diffusion does not.
What is the process in which molecules move from an area of higher concentration to lower concentration?
Diffusion is the movement of particles from an area of high concentration to an area of low concentration--not to be confused with osmosis, which is the movement of water through a semi-permeable membrane.
Does a cell use energy when molecules diffuse in or out of the cell down the concentration gradient?
Diffusion is passive transport - it means that the cell doesn't use any energy transporting the materials. However, if there is more of a substance inside a cell than outside a cell (like nutrients), and the cell needs to get the nutrients in, diffusion will not owrk. The cell uses energy to do active transport and get the particles in.
What is the movement of particles of a material from regions of higher concentration to regions of lower concentration of that material?
DiffusionThe movement of particles from a region of higher concentration to a region of lower concentration is called diffusion. However, the movement of water through a semi-permeable membrane (from an area of high concentration to an area of low concentration) is specifically called osmosis.
Describe the difference between diffusion and osmosis?
although both are the movement of particles from an area of high concentration to low, diffusion is the movement of many kinds of substances however osmosis refers to the diffusion of water particles only from an area of high water concentration to an area of low water concentration.
What is the difference in concentration between a region of high concentration and one of lower concentration?
There is no exact number assigned to the difference between the higher and lower concentrations. However, the establishment of a concentration differential is essential for both diffusion as well as osmosis.
