3.1 The Cell Membrane Flashcards
Cell Membrane
an extremely pliable structure composed primarily of back-to-back phospholipids (a “bilayer”)
an extremely pliable structure composed primarily of back-to-back phospholipids (a “bilayer”)
Cell Membrane
Hydrophilic Molecule
is attracted to water
is attracted to water
Hydrophilic Molecule
Hydrophobic Molecule
repelled by water
repelled by water
Hydrophobic Molecule
Amphipathic Molecule
contains both a hydrophilic and a hydrophobic region
contains both a hydrophilic and a hydrophobic region
Amphipathic Molecule
Phospholipid Structure Reference
Intracellular Fluid (ICF)
the fluid interior of the cell
the fluid interior of the cell
Intracellular Fluid (ICF)
Extracellular Fluid (ECF)
the fluid environment outside the enclosure of the cell membrane
the fluid environment outside the enclosure of the cell membrane
Extracellular Fluid (ECF)
Interstitial Fluid(IF)
the term given to extracellular fluid not contained within blood vessels
the term given to extracellular fluid not contained within blood vessels
Interstitial Fluid(IF)
Phospholipid Bilayer Reference
Integral Protein
a protein that is embedded in the membrane
a protein that is embedded in the membrane
Integral Protein
Channel Protein
is an example of an integral protein that selectively allows particular materials, such as certain ions, to pass into or out of the cell
is an example of an integral protein that selectively allows particular materials, such as certain ions, to pass into or out of the cell
Channel Protein
Cell Membrane Reference
Receptor
protein molecule that contains a binding site for another specific molecule (called a ligand)
protein molecule that contains a binding site for another specific molecule (called a ligand)
Receptor
Ligand
molecule that binds with specificity to a specific receptor molecule
molecule that binds with specificity to a specific receptor molecule
Ligand
Glycoprotein
protein that has one or more carbohydrates attached
protein that has one or more carbohydrates attached
Glycoprotein
Glycocalyx
coating of sugar molecules that surrounds the cell membrane
coating of sugar molecules that surrounds the cell membrane
Glycocalyx
Peripheral Proteins
membrane-associated protein that does not span the width of the lipid bilayer, but is attached peripherally to integral proteins, membrane lipids, or other components of the membrane