bio 2nd qrtr Flashcards
a membrane made of two layers of phospholipids with embedded proteins that seperates the insides of the cell from its environment
CELL MEMBRANE
having both hydrophilic and hydrophobic parts
AMPHIPATHIC MOLECULE
allows certain substances to pass through but not others
SEMI PERMEABLE
easily bent
PILIABLE
able to flow freely
FLUID
polytropic or transmembrane spans across the membrane
INTEGRAL
monoprotic attached to only one side of the membrane
PERIPHERAL
enumerate function of protein
RECEPTOR
CHANNEL
TRANSMEMBRANE TRANSPORT
ADHESION
CELL CELL RECOGNITION
ENZYMATIC FUNCTION
mostly found on eternal surface / provides energy for the cell to survive
CARBOHYDRATES
attached to proteins
GLYCOPROTEINS
attached to lipids
GLYCOLIPIDS
regulates fluidity of membrane as temperature varies
CHOLESTEROL
high temperature causes ?
INCREASED FLUIDITY
low temperature causes ?
DECREASED FLUIDITY
describe sthe structure of a cell membrane
FLUID MOSAIC MODEL
serves as a barrier that seperates the components of cell from its surrounding environment
PROTECTION
semi permeable membrane that regulates the transport of materials in and out of the cell
MATERIAL TRANSPORT
serves as the attachment point of the cytoskeleton which aids in maintaining the shape and form of the cell
CELL SHAPE
seperates the organelles from each other and from the cytoplasm providing their own environment and functional individuality
COMPARTMENTALIZATION
enables cell to identify other cells and foreign substances
CELL RECOGNITION
plays a vital role in the performance of cell functions
CELL FUNCTION
proteins who have extensions of lipids and sugars residues
GLYCOCALYX
phosphate tails = hydrophobic
FATTY ACIDS
they allow certain things to travel in or out
MEMBRANE PROTEIN
strong lipid bonds
INTEGRAL PROTEIN
weak lipid bonds
PERIPHERAL PROTEIN
makes powerful network outside cell
GLYCOPROTEIN
sugar molecules that come off of the cell membrane
GLYCOLIPIDS
regulates the movement of water
CELL DEHYDRATION
allows our immune system cells to recognize everything
ANTIGENIC FUNCTION
a very specific type of network that recognizes if a foreign cell doesnt have the same component
HOST
the ability of cell to adapt its shape and movement
FLUIDITY
does not recquire use of energy / the driving force is usally kinetic energy in the form of concentration gradient
PASSIVE TRANSPORT
solute molecules pass directly through the membrane from a region of high concentration to low concentartion
SIMPLE DIFFUSION
diffusion of solvent molecules through a semi permeable from an area of low solute conc to high solute conc
OSMOSIS DIFFUSION
plasmolysis or crenation
HYPERTONIC
normal concen gradient and size
ISOTONIC
homolysis or swelling
HYPOTONIC
movement of molecules through a semi permeable membrane from high to low conc with aid of diffusion
FACILLITATED DIFFUSION
membrane protein that forms pores or channels which is the passageway of proteins
CHANNEL PROTEINS
water channel proteins
AQUAPORINS
carry ions or molecules accross, glucose and amino acids
CARRIER PROTEINS
opens a gate allowing molecules to pass through the membrane
GATED CHANNEL PROTEINS
recquires the use of energy
ACTIVE TRANSPORT
uses energy in the form of ATP membrane public transporters
PRIMARY ACTIVE TRANSPORT
uses potential energy often electrochemical
SECONDARY ACTIVE
move in same direction
SYMPORTER
move in opposite direction
ANTIPORTER
movement of large materials in to and out of cell by way of vesicles
BULK TRANSPORT
ccells taken in substances from outside the cell by engulfing them in all side
ENDOCYTOSIS
a cell engulfs large particles using their pseudopodia and encloses it in a vesicle called phagosome
PHAGOCYTOSIS
it gulps or drinks to extracellular fluid with dissolved small molecules
PINOCYTOSIS
the cell membrane contains receptor proteins and used to gulp target molecules
RECEPTOR MEDIATED
secretory vesicles within the cell fuses with the plasma membrane releasing its content into the extracellular space
EXOCYTOSIS
