Remember that ions are electrically attracted to particles of opposite charge an
ID: 3510905 • Letter: R
Question
Remember that ions are electrically attracted to particles of opposite charge and are repelled by particles of the same charge. By electrical attraction alone, in what direction would A- tend to move if movement were possible? _______ A) into the cell B) outside the cell
By diffusion alone, in what direction would A- ions tend to move if movement were possible? A) Out of the cell B). into the cell
If a gated A- channel in the membrane opened up, in what direction would A- move? A) Out of the cell B) Into the cell C) Depends on the relative strengths of diffusion and electrical attraction
The tendency of A- ion to move across the plasma membrane depends on the ___________. A) electrochemical gradient B) Osmotic potential C) turgor pressure.
e following table presents the concentrations of these three Charged Concentration (mM) Concentration (mM) Particle Inside 150 100 15 Outside K+ 5 Nat 150 member that ions are electrically attracted to particles of opExplanation / Answer
By electrical attraction alone, in what direction would A- tend to move if the movement were possible? Answer- into the cell - because the negatively charged ion gets attracted towards more positively charged intercellular region of the cell. By diffusion alone, in what direction would A- ions tend to move if the movement were possible? Answer- Out of the cell - diffusion takes place from a region of higher concentration to lower concentration. If a gated A- channel in the membrane opened up, in what direction would A- move? Answer- Depends on the relative strengths of diffusion and electrical attraction The tendency of A- ion to move across the plasma membrane depends on the ___________. Answer- electrochemical gradient