Endocytosis
the cell membrane
a chmical method is a method in pest control that uses chemicals to control or kill the pest.
by mean of using membrane filters,we can sterilize heat labile solutions
The simplest method is by heating.
may be chance to contamination highly
In the preparation of colloids, using the dispersion method, larger particles of the substance are broken down into much smaller parts. Using the condensation method, smaller particles are dispersed and condensed to colloidal size.
Radiation does not need particles to transfer heat.
the cell membrane
Sieve.
The most simple method is sieving.
a chmical method is a method in pest control that uses chemicals to control or kill the pest.
by mean of using membrane filters,we can sterilize heat labile solutions
Stirring is the best method.
precipitation
The simplest method is by heating.
Reverse Osmosis is a system that helps clean waste water.But it uses only little of the waste water filled into the filter to clean. The system is the reverse of the Osmosis filtration method. It uses pressure to force the water to flow through the membrane, leaving most dissolved particles behind which was in the water , trapped by the membrane. The waste water is then cleansed, but is not thorough.
The cell membrane determines what comes in and what goes out. Water goes in and out by osmosis which is a passive method. Others require the help of proteins that act as doorways. These require energy and the method is called active transportation.