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).
**** 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 .