Flashcards
what makes up cell membrane
lipid bilayer containing protein channels,enzymes, receptors
what does cholesterol do
membrane fluidity of cell membrane
charge of cell
neg inside and pos outside (3Na out 2 K in)
what is na gradient used for
co-transport of glucose, proteins, other molecules
what is the difference between intra and extracellular fluid
extra: higher na, ca, chloride, hco3-, so4, organic anions
intra: higher k, mg, hpo4, protein
what are desmosomes/hemidesmosomes
desmosomes: adhesion molecules for cell-cell
hemidesmosomes: cell-ecm
what are tight junctions
cell occluding junctions; impermeable
what are gap junctions
allow communication between cells
what are gap junctions made of
connexin subunits
what are g proteins
intramembrane proteins that transduce signal from receptor to response enzyme
what are ligand-triggered protein kinase
receptor (ligand receptor) and response enzyme (protein kinase) are a single transmembrane protein
what are ABO blood type antigens made of
glycolipids on cell membrane
what are HLA-type antigens made of
glycoproteins (Gp) on cell membrane
