osmosis
The osmosis of (Osmosis) is the movement of solvent. (Often referred to water) through a membrane from a solution of low concentration to high concentration solution (remember a little water and too much water through the membrane, such as membrane Or paper cellos defenseman that we used in our experiments).
The osmosis of (Osmosis) is the movement of solvent. (Often referred to water) through a membrane from a solution of low concentration to high concentration solution (remember a little water and too much water through the membrane, such as membrane Or paper cellos defenseman that we used in our experiments).
**** show osmosis. The water moves very little water through
the membrane. (semipermeable membrane) ****.
The osmosis pressure in two related species .
- Osmotic pressure (Osmotic pressure) is the pressure to
resist the movement of a solvent through a membrane . Such as cell membranes.
( Osmotic pressure is the force that resists the motion of
the water, the water moves from an area with a lot of water to an area with
less water resistance , so if there is not much water movement . Water moves
through the membrane significantly. ( Not much resistance = low osmotic
pressure ) and osmotic water pressure low ).
- Firm pressure (turgor pressure) is the pressure inside the
cell. Occurs due to osmosis , water enters the cell and push the cells to swell
up or tune . When too much water into the cell if the cell may rupture . If a
plant cell is usually due to the rupture of the cell wall, the cell shape .
The balance point of the spread . Osmotic pressure of
solution = peak pressure up
Diffusion
Is the movement of particles from a substance to an area of high
density material with low density . By the kinetic energy of the substance
itself. ( I had exams Ent ) .
(key word is little substance to substance . Or areas where
the substance will move to areas with less substance ) by the spread of the two
types .
1.1) over conventional (Simple diffusion) is not
broadcasting live carrier . Or help transport (carrier) Nothing like the spread
of powdered potassium permanganate in water until the water is colored magenta
and around the container . The powder scent or perfume smell
Figure 1 shows a simple diffusion (the substance to
substance less).
Figure 2 shows the distribution of gas in the lungs.
1.2) diffusion ° Si Tate (Facilitated diffusion) the
diffusion of water through a protein carrier (Carrier) embedded in the cell
membrane directly to a protein carrier (carrier) is acting like a gate to get
molecules into . and out of cells. Diffusion is faster than the diffusion rate
of diffusion very simple example, the liver cells and endocytosis . Intestinal
epithelial cells . This diffusion occurs in the cells of organisms only.
Figure 3 shows the diffusion ° Si Tate (less substance to
substance but must have taken).
Factors that affect the spread .
1. Status of the substance . The maximum kinetic energy of gas diffusion rates are highest .
2 . Status message will spread through intermediaries . By means of the gas is the least resistance , the highest rate of diffusion .
3. Sized particles of the substance. The smaller particles have higher rates of high transmission .
4 . Distances substance dissolves in a unit time.
5 . Temperature affects the kinetic energy of the substance increases the rate of diffusion increases.
6. Pressure when the pressure increased to increase the density of the substance . Result in a higher rate of diffusion .
7. Difference between the two areas of concentration .
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