DP Biology Vocabulary - 1.3 Membrane structure
Essential vocabulary for the IBO DP Biology course
Terms in this set (17)
molecule that has hydrophobic and hydrophilic regions.
a lipid that prevents the membrane from becoming too and also prevents it from crystalizing.
model of the cell membrane in which the phospholipid bilayer is between two layers of protein.
proteins arranged in chains on the membrane to allow the transfer of electrons from one carrier to another.
Fluid mosaic model
a model conceived by S.J. Singer and Garth Nicolson in 1972 to describe the observed structural features of biological membranes.
refers to the viscosity of a lipid bilayer of the membrane that allows it to change shape.
proteins that contain oligosaccharide chains.
proteins on the outside of the membrane that allow specific hormones to bind.
molecules that are attracted to water.
molecules that are not attracted to water but are attracted to each other.
proteins embedded in the phospholipid bilayer.
proteins on the surface of the plasma membrane.
the rate of passive diffusion of molecules through the membrane, which depends on the electric charge, size, and polarity of the molecule.
two layers of phospholipids arranged so that their hydrophobic tails are projecting inwards while their polar head groups are on the outside surfaces.
a lipid consisting of a glycerol bound to two fatty acids and a phosphate group.
current model of membrane structure that incorporates a fluid mosaic structure in a discontinuous lipid bilayer.
proteins in the plasma membrane that release energy and use it to move substances across the membrane.