Effect of lipid solubility on permeability of plasma membrane
SITI ALIA IZZANI ISMAIL
M13D
Name
: SITI ALIA IZZANI BINTI ISMAIL
Class
: M13D
Date
: 6th September 2013
Title
: Movement through the plasma membrane
Hour
: 2 hours
Assessment
: Design
Aim
: To study the effect of lipid solubility of molecules on permeability of plasma membrane of animal cell.
Introduction :
Diffusion: In general, diffusion process occur when there is a concentration gradient between two region .Molecules (other than water) will move by diffusion as long as there is a concentration gradient. A concentration gradient exists when a particular type of molecule (like food coloring dye molecules) is not spread out in an even concentration, but exists in a higher concentration at some point.
Discussing about the movement across the plasma membrane of cell, diffusion is the simplest type of passive transport, whereby diffusion does not require the cell to use energy.
Only small molecules can cross the cell membrane by simple diffusion. Diffusion is the movement of molecules from an area of high concentration to one of low concentration. This difference in the concentration of molecules across a space is called the concentration gradient.
Diffusion is driven by the kinetic energy of the molecules. Because of their KE, molecules are in constant motion. Diffusion occurs when molecules move randomly away from each other in a liquid or gas. The rate of diffusion depends on the temperature, size and the type of molecules that are diffusing. Molecules diffuse faster at higher temperatures than at lower temperatures, and smaller molecules diffuse faster than large molecules. Most transport of materials into and out of cells occurs by diffusion. The concentration gradient is the difference between the concentration of a solute in one place and its concentration in an adjacent area.
We would just compare the solutions inside and outside of the cell for their concentrations of the molecule in
M13D
Name
: SITI ALIA IZZANI BINTI ISMAIL
Class
: M13D
Date
: 6th September 2013
Title
: Movement through the plasma membrane
Hour
: 2 hours
Assessment
: Design
Aim
: To study the effect of lipid solubility of molecules on permeability of plasma membrane of animal cell.
Introduction :
Diffusion: In general, diffusion process occur when there is a concentration gradient between two region .Molecules (other than water) will move by diffusion as long as there is a concentration gradient. A concentration gradient exists when a particular type of molecule (like food coloring dye molecules) is not spread out in an even concentration, but exists in a higher concentration at some point.
Discussing about the movement across the plasma membrane of cell, diffusion is the simplest type of passive transport, whereby diffusion does not require the cell to use energy.
Only small molecules can cross the cell membrane by simple diffusion. Diffusion is the movement of molecules from an area of high concentration to one of low concentration. This difference in the concentration of molecules across a space is called the concentration gradient.
Diffusion is driven by the kinetic energy of the molecules. Because of their KE, molecules are in constant motion. Diffusion occurs when molecules move randomly away from each other in a liquid or gas. The rate of diffusion depends on the temperature, size and the type of molecules that are diffusing. Molecules diffuse faster at higher temperatures than at lower temperatures, and smaller molecules diffuse faster than large molecules. Most transport of materials into and out of cells occurs by diffusion. The concentration gradient is the difference between the concentration of a solute in one place and its concentration in an adjacent area.
We would just compare the solutions inside and outside of the cell for their concentrations of the molecule in