what is Diffusions

is the random movement of molecules from higher concentration to a low concentration 

gases such as oxygen and carbondixode 

is the passage of water molecules from a region of there high concentration to a region of their low concentration though a partially semi permeable membrane it is the form of diffusion which only water molecule move 

solutions have more solute than the inside of the cell and lead to crenation (shrivel up)

solutions have less solute than inside the cell and lysis ( bursting)

have an equal amount of solute on the inside and outside of the cell and this doesn’t affect the cell.

is the movement of molecules from a lower to higher concentration using ATP as energy, requires a protein carrier.

is the transport of molecules across the plasma membrane from a higher concentration to a lower concentration. Via a protein carrier  

The regents for a lipid test is put a paper towel on a table and put something on it and see if they’re a stain 

how to you find if a substance has protien in it

what colour will it turn if its has protien in it

The regents used for proteins is biuret regent a positive test for protein will turn purple 

The regents used to test for sugars are glucose use benedicts solution than put test tube into a hot water bath 

how do you test for carbohydrates 

what colour will it turn if its positive

The regents used to test for carbohydrates are 1 percent starch and 5 drops of iodine  the colour it will turn if the control is positive is brown 

the cells that retain the primary stain will appear blue or purple

Cells that stain with the counterstain will appear pink or red

uses a beam of electrons magnified and focused on a photographic plate by means of electronic.