Membrane Structure
Hydrophilic means this
likes water
Name of transport mechanism that requires ATP
Active transport mechanisms
what is the type of diffusion that has charrier-mediated and channel-mediated transport
facilitated diffusion
intracellular
In cell transport, the exchange between materials occurs between these 2 areas
The extracellular and intracellular spaces
Phospholipids make up how much of the lipid bilayer
75%
Name of transport mechanism that requires no ATP
passive transport mechanism
whatever is dissolved in a solution is called
solute
Outside of the cell
extracellular
in active transport mechanism, the molecules moves from ______ to _______ concentration
low to high
peripheral proteins are found where in the bi-layer
the outside
this type of channel is always open so that the molecules can pass through without opening gate
leakage channel
water channels
aquaporin
Between the cells
intercellular
channel controlled by chemical or electrical signals
gated channels
Two major types of membrane proteins
Integral and peripheral
Diffuse directly through phospholipid bilayer nonpolar lipid-soluble substances
simple diffusion
this means that the protein will only bind to certain things
specificity
this means the difference that naturally exists between extracellular and intracellular area
Controls what comes in and what comes out of the cells
selectively permeable
Name lipid bilayer (head and tail)
Hydrophilic head and hydrophobic tail
Passive transport does not require _______
energy
Two types of channels
leakage channels and gated chanels
membrane proteins float through membrane, changing pattern on surface referred to as a _____ model
fluid mosaic
3 types of transport proteins
channels, carrier, and ATP powered pump