If the lipid bilayer were to contain the K+ channel protein, what would pass thr
ID: 141576 • Letter: I
Question
If the lipid bilayer were to contain the K+ channel protein, what would pass through the membrane if you added a 1 M solution of sodium chloride on the left side and a 1.5 M solution of potassium ions on the right? Assume that there is an equal amount of water on each side at the start of the experiment.
Select all that apply.
Select all that apply.
chloride ions sodium ions potassium ions water will initially move from the right to the left, then backward water will initially move from the left side to the right, then backward water would move from the right to the left none of the aboveExplanation / Answer
We should be paying attention here that the question is talking about potassium "channel" protein .
There are mainly two types of membrane protein -
Potassium channel protein - these are the types of transmembrane protein that allows strictly the movement of potassium ions across them only . The process is passive and along the concentration gradient .
Now in this question , the concentration on left side of the holidays layer is the 1M and on the right side is 1.5 M .
Considering the fact that transmembrane protein is a potassium channel , potassium should move along the gradient , which means it the bilipid layer from right to left .
Also , there is only passive movement across the bilipid layer . It means there will be no exchange of sodium with the potassium . That means sodium remains in the left segment and does not cross to the right side .
As sodium has higher tendency to draw water towards itself , there will be no water movements either .
So the only ion that will move across the bilayer is the potassium . It will move from the right side to the left side passively until there is an electrical equilibrium .