Plasma Membrane Flashcards
Plasma membrane is found where
Outside every cell
Plasma membrane controls what
The molecules that enter and leave the cell
The base structure is made up of what
Phospholipids
A phospholipids is made up of
Glycerol Molecules With two fatty acid chains
The fatty acid chains are made up of
Carbon hydrogen
Because the molecules are made of carbon an hydrogen the have
No charge and insoluble in water
The fatty acids form what of the molecule
The tail
This is said to be what
Hydrophobic
The phosphate group however has a charge and is what in Water
Soluble
Because it is soluble it forms the what of the molecule
Head
This is said to be hydrophilic Which means I is
Water loving
In the membrane phospholipids will pack together to form a double layer also known as
Bilayer
The heads are in what with the water
In contact
There is water surrounding all cells and a well as in what
Cytoplasm
The tails are found where
In the middle of the membrane away from the water
Lipid soluble molecules can pass through what
The phospholipid bilateral
What three things can pass through the phospholipid bilayer
Oxygen carbon dioxide and water
The reason why other ions can’t pass through the membrane
It is said to be partially permeable
Phospholipids are not just molecules found in a membrane they have what scattered around
Protiens
Proteins that pass all the way through the phospholipids are called
Intrinsic protiens
Some of these protiens act as carriers to transport soluble substances across the
Membrane
Cystic fibrosis have faulty proteins in the membrane what ion dose not transport
Chloride
Other proteins are called
Extrinsic protiens
Extrinsic proteins do what
These give mechanical support to the membrane or act as cell receptors
