membrane
what are the main components of the Phospholipid bilayer
hydrophilic head and hydrophobic tail.
the movement of molecules from high concentration to low concentration.
osmosis is
diffusion of water across the membrane
what energy does active transport use
ATP
transport or catalyst or communication or adhesion.
True or false passive transport can use transport proteins.
True
can osmosis move water against the concentration gradient
No
against the concentration gradient from low to high
what role do carbohydrates play in the membrane
True or false diffusion can move all molecules across the membrane
False
when blood cells are placed into a solution of this type they swell and may explode
hypotonic solution.
True or false Potassium uses ATP to cross the membrane in active transport
Fales Sodium uses ATP.
able to control movement of substances in and out.
what type of molecules can cross the phospholipid bilayer?
non-polar eg oxygen, CO2, and water.
Hypertonic solutions would cause plant cells to
shrivel after trying to reduce the salt concentration outside the cell.
with bulk transport name the processes a vesicle will go through
Exocytosis and Endocytosis
the Fluid mosaic model describes what about the membrane
how the phospholipids, proteins and carbohydrates are not stationary in the membrane and can move around.
increasing the surface area will do what to diffusion
increase the efficacy of diffusion
a U tube demonstration has been left in the lab one side has a higher level of liquid what has happened in this tube
the water concentration has adjusted due the higher side having more solute than the lower side
inside the cell what role does the golgi body play in exocytosis
packages up the proteins into vesicles to be transported to the cell membrane
Miss Trickett has enjoyed teaching this class
Yes :)