Osmosis & Diffusion Flashcards
What is Diffusion?
This is the movement of particles or molecules from a region of high concentration to a region of low concentration until they are evenly distributed.
Process of Diffusion
These molecules are particles of gas or liquid can move around at random.
Examples of Diffusion
Smells can spread in water,eg sharks can smell blood from distance away, smell of food being cooked in the kitchen,spraying perfume in a room.
Process of Osmosis
The cell membrane is semi-permeable or partially permeable,this means that some substances can pass through it,but others cant.
The membrane has small pores(opening) that allows for the movement of substances.
Water moves from a diluted to a more concentrated solution along a concentration.
What is Osmosis?
This is the movement of water molecules from a region of high concentration to a region of low concentration through a semi-permeable membrane.
Examples of Osmosis
plant roots absorbing,raisin in water,feeling thirsty after consuming salty foods.
What is Turgid?
-water enters and leave the cell for a firm shame.
It is considered as being Isotonic.
What is Plasmolysed?
-water leaves the cell so it collapses.
It is considered as being Hypertonic.
What is Haemolysis?
-much water enters the cell,which blows up and burst.
This is considered as being Hypotonic.
What is considered as;
sugar solution
water
concentrated
diluted
Sugar Solution- solute
Water- solvent
Concentrated- more solute than solvent
Diluted- more solvent than solute.
What is Isotonic?
-any external solution that has the same solute concentration compared to body fluids.
What is Hypertonic?
-any external solution that has a high solute concentration and low water concentration compared to any body fluids.
What is Hypotonic?
-has a lower solute concentration compared to the intracellular solute concentration.
What are the functions of vitamin E?
healthy skin and eyes,strong immune system.
What is Vitamin K ?
A fat soluble nutrient
