Which one of the following occurs with each cycle of the sodium-potassium pump?
A) Sodium is moved into the cell, creating a net negative charge outside the cell.
B) The net effect is removal of one osmotic particle and one positive charge from inside the cell.
C) The net effect is removal of one osmotic particle and one negative charge from inside the cell.
D) The inside of the cell becomes more negative as potassium is pumped out.
E) Two potassium ions and three sodium ions are pumped out of the cell.
B
You might also like to view...
Which of the following is NOT true about the peacock butterfly?
a. The dark underside of their wings provides camouflage. b. The spots on the wings may resemble owl eyes, which help deter predation. c. The butterflies remain still when a predator is near so as not to draw attention. d. The rapid movement of their wings produces a hissing sound. e. A resting butterfly’s closed wing resembles a dead leaf.
The first leaves produced by an embryo while still inside the seed are
A) cotyledons. B) epicotyls. C) coleoptiles. D) endosperms. E) embryo sacs.
Which of these eye structures is responsible for allowing a person to see color?
A) cones B) rods C) sclera D) incus
A. What is the pH of pure water?
B. What concentration of hydronium ions does a solution of pH 8 contain? C. Complete the following reaction: CH3COOH + H2O ? __________. D. Will the reaction in (C) occur more readily (be driven to the right) if the pH of the solution is high?