Because the concentration is going up so much energy is needed to do this. If the cell was going from a high concentration to a low, no energy is needed because it is already at a high concentration and its going lower you wouldn't need any energy to go lower at a high stance
Two things are required: a driving force for movement and the ability to move.
The driving force for movement can be summed up in the Gibbs free energy - or the chemical potential of the particles. A concentration gradient can be created by changing the conditions of two regions by imposing a temperature gradient, a pressure gradient, or an electrochemical gradient.
None of this will make the particles move though if they are locked in place in a solid of course - at least on a human time scale. You can get migration of particles in solids over very, very, very long time periods.
It's because of Diffusion
Diffusion is the movement of particles from an area of high concentration to an area of a lower concentration down a concentration gradient.
Diffusion is the process in which particles seek equilibrium. They do so by moving to low concentration from high concentration.
Diffusion is when something moves from an area of high concentration to an area of low concentration. It is considered Osmosis when water moves through a semipermeable membrane to ensure equilibrium.
Yes, a synchrotron can accelerate charged particles to high speeds because of this compensation.
As long as there is a concentration gradient. This is because diffusion occurs which is the net movement of substances from a region of high concentration to a region of low concentration.
who even knows!
diffusion
diffusion
Active transport usually involves the movement of particles from high to low concentration.
Diffusion
Diffusion
Diffusion
This is called diffusion, but it is a purely statistical process - randomly moving particles have a higher probability of spreading from an area of high concentration to an area of low concentration than the other way around, simply because there are more of them in the area of high concentration.
The answer is is OSMOSIS the spontaneous net movement of water across a membrane from a region of low concentration to a solution with a high concentration, down a solute concentration gradient.
No, osmosis is the movement of water particles through a semi-permeable membrane, from a place where there is a high concentration of water, to where there is a lower concentration of water. It can be confusing, because when we talk about solutions we often refer to the concentration of the solute rather than the solvent. For instance, if we have a cell containing cell sap with a high concentration of sugar, and a more dilute solution outside the cell, water will flow into the cell. If you think about the sugar, it might seem that particles are going to the more 'crowded' areas, but the important thing is the concentration of the molecules which are moving, i.e. the water molecules. A dilute solution of sugar has a higher concentration of water than a concentrated one.
This is called diffusion, but it is a purely statistical process - randomly moving particles have a higher probability of spreading from an area of high concentration to an area of low concentration than the other way around, simply because there are more of them in the area of high concentration.
Active transport if you are moving particles to increase the concentration. Or Osmosis if the particles transported are those of the solute to effectively reduce the concentration.