Which of the following molecules does not contain a fatty acid tail? SDS or CHOLESTEROL
Which of the following statements is true? (a) Phospholipids will spontaneously form liposomes
in POLAR solvents. Or MEMBRANE LIPIDS DIFFUSE WITHIN THE PLANE OF THE MEMBRANE
You got a cell line with no name, but it says that this cell line forms coated pits but vesicle
budding and the removal of coat proteins don’t happen. Which of the following proteins might
be lacking in this cell line? DYNAMIN
Bacterial porin proteins form large, barrel-like channels in the membrane. Which of the
following is true about these channels? They are made primarily of β-sheets----------------------
NOT true? They are primarily made of a helices
The endothelial cells found closest to the site of an infection express proteins called _____,
which binds to a particular __________that is presented on the surface of a target cell. LECTIN
AND OLIGOSACCHARIDE
The extracellular side of the integral membrane proteins is often glycosylated. (a) True
The cytoplasmic side of the integral membrane proteins are often glycosylated False
Cholesterol equally locates to the outer and inner leaflets of the plasma membrane. (a) True
Cholesterol is more enriched at the outer leaflet of the plasma membrane False
Inner leaflet of the plasma membrane is enriched with glycolipids False
Which of the following proteins is a GTP binding protein? Rab
Transmembrane proteins cross the plasma membrane as an unfolded polypeptide. False
Membrane proteins that pump ions in and out of the cell are classified as enzymes. True
A symport would function as an antiport if its orientation in the membrane were reversed.False
The lateral motility of membrane proteins can be restricted by gap junctions. False
An electrical signal is converted into a chemical signal at the synapse by a stress gated chloride
channel. False
The resting membrane potential of animal cells is always 60 mV False
A voltage-gated Na+ channel adopts three alternative conformations. True
A voltage gated Na+ channel adopts two alternative conformations False
Tight junction permits selective ion transport. False
