Chapter 3 Flashcards
(15 cards)
Cell Membrane
composed of phospholipids, cholesterol and proteins that enclose cell contents
Fluid Mosaic Model
a depiction of the structure of the membrane of a cell as phospholipid bilayers in which proteins are dispersed
Phospholipids
modified lipid, which contains phospholipids
Glycolipids
a lipid with one or more covalently attached to sugars
Cholesterol
steroids found in animal fats as well as in most body tissues made by the liver
Integral Proteins
is a type of membrane protein that is permanently attached to the biological membrane. all transmembrane proteins are IMP’s but not all IMPS are transmembrane proteins
Peripheral Proteins
a protein that is associated with the plasma membrane. Interacts with the integral proteins or membrane lipids
Channels
a transmembrane protein that forms an aqueous pore, allowing substance to move from one side of the membrane to the other.
Transporter/Carriers
a transmembrane protein that changes the shape to envelope and transport a polar substance across the cell membrane
Receptors
protein that binds specifically with other molecules
Enzyme
a protein that acts as a biological catalyst to speed up a reaction
Cytoskeleton Markers
a cell skeleton, an elaborate series of rods running through the cystol supporting cellular structures and providing the machinery to generate various cell movement
Cell Identity Markers
integral proteins on the cytoplasmic face of a cell membrane which are ligands for cell to cell recognition in various structures
Simple Diffusion
the unassisted transport across a plasma membrane of a lipid- soluble or very small particle
Facilitated Diffusion
passive transport process used by certain large or charged molecules (glucose) that are unable to pass through
