plasma membrane
forms the outer boundary of the cell, through which the cell interacts with its external
environment
nucleus
directs cell activities, most of which take place in the cytoplasm; usually located near the
center of the cell
organelle
specialized structure that performs a specific function
intracellular
substances inside the cell
extracellular
substances outside the cell
membrane potential
charge difference across the plasma membrane resulting from the regulation of ion
movement
glycocalyx
collection of glycolipids, glycoproteins and carbohydrates on the outer surface of the
plasma membrane
phospholipids and cholesterol
predominant lipids of the plasma membrane
liquid bilayer
double layer of phospholipid molecules
, hydrophilic
"water-loving"
hydrophobic
"water-fearing"
fluid-mosaic model
model suggesting that the plasma membrane is neither rigid nor static in structure, but is
highly flexible and can change its shape and composition through time
cholesterol
limits the movement of phospholipids, providing stability to the plasma membrane
marker molecule
cell surface molecule that allows a cell to identify other cells or other molecules
glycoprotein
protein with attached carbohydrate
glycolipid
lipid with attached carbohydrate
integral (intrinsic) protein
protein molecule that penetrates deeply into the lipid bilayer
peripheral (extrinsic) protein
protein molecule attached to either the inner or outer surface of the lipid bilayer
attachment protein
integral protein that allows a cell to attach to other cells or to extracellular molecules
forms the outer boundary of the cell, through which the cell interacts with its external
environment
nucleus
directs cell activities, most of which take place in the cytoplasm; usually located near the
center of the cell
organelle
specialized structure that performs a specific function
intracellular
substances inside the cell
extracellular
substances outside the cell
membrane potential
charge difference across the plasma membrane resulting from the regulation of ion
movement
glycocalyx
collection of glycolipids, glycoproteins and carbohydrates on the outer surface of the
plasma membrane
phospholipids and cholesterol
predominant lipids of the plasma membrane
liquid bilayer
double layer of phospholipid molecules
, hydrophilic
"water-loving"
hydrophobic
"water-fearing"
fluid-mosaic model
model suggesting that the plasma membrane is neither rigid nor static in structure, but is
highly flexible and can change its shape and composition through time
cholesterol
limits the movement of phospholipids, providing stability to the plasma membrane
marker molecule
cell surface molecule that allows a cell to identify other cells or other molecules
glycoprotein
protein with attached carbohydrate
glycolipid
lipid with attached carbohydrate
integral (intrinsic) protein
protein molecule that penetrates deeply into the lipid bilayer
peripheral (extrinsic) protein
protein molecule attached to either the inner or outer surface of the lipid bilayer
attachment protein
integral protein that allows a cell to attach to other cells or to extracellular molecules
