Na+/K+ Pump Q&A
K+ - (correct answer)In the resting cell, there is a high concentration of what inside the
cell?
Na+ - (correct answer)In the resting cell, there is a high concentration of what outside of
the cell?
More K+ leak channels - (correct answer)Are there more or less K+ leak channels
compared to Na+ leak channels?
K+ - (correct answer)Which diffuses out of the cell, K+ or Na+?
Na+ - (correct answer)Which diffuses into the cell, K+ or Na+?
2 K+ - (correct answer)How many K+ are pumped into the cell?
3 Na+ - (correct answer)How many Na+ are pumped out of the cell?
ATP hydrolysis - (correct answer)What is the Na+/K+ pump driven by?
Negatively charged - (correct answer)Is the cell more negatively charged or positively
charged?
The sodium-potassium pump ejects two Na+ from the cell and then transports three K+
back into the cell in order to maintain the concentration gradients for sodium and
potassium. - (correct answer)False
Opening K+ or Cl- channels in a postsynaptic membrane would produce an inhibitory
postsynaptic potential (IPSP). - (correct answer)True
, A primary active transport process is one in which __________. - (correct
answer)molecules move through transport proteins that have been activated by ATP
Some transport processes use transport proteins in the plasma membrane, but do not
require ATP. This type of transport is known as _____. - (correct answer)facilitated
diffusion
The majority of water molecules moving across plasma membranes by osmosis do so
via a process that is most similar to ____. - (correct answer)facilitated diffusion
The sodium-potassium pump uses ATP to move sodium and potassium ions across the
plasma membrane. This statement describes _____. - (correct answer)primary active
transport
A vesicle fuses with the plasma membrane and releases its contents to the extracellular
fluid. This statement describes _____. - (correct answer)exocytosis
Which of the following best explains diffusion? - (correct answer)movement of
molecules from an area of high concentration to an area of low concentration
Which of the following is most likely to move through the cell membrane by facilitated
diffusion? - (correct answer)Na+
What is the basic difference between simple diffusion and facilitated diffusion across a
cell membrane? - (correct answer)In facilitated diffusion, molecules only move with the
aid of a protein in the membrane.
Which of the following is least likely to increase the rate of diffusion? - (correct
answer)small concentration gradient
K+ - (correct answer)In the resting cell, there is a high concentration of what inside the
cell?
Na+ - (correct answer)In the resting cell, there is a high concentration of what outside of
the cell?
More K+ leak channels - (correct answer)Are there more or less K+ leak channels
compared to Na+ leak channels?
K+ - (correct answer)Which diffuses out of the cell, K+ or Na+?
Na+ - (correct answer)Which diffuses into the cell, K+ or Na+?
2 K+ - (correct answer)How many K+ are pumped into the cell?
3 Na+ - (correct answer)How many Na+ are pumped out of the cell?
ATP hydrolysis - (correct answer)What is the Na+/K+ pump driven by?
Negatively charged - (correct answer)Is the cell more negatively charged or positively
charged?
The sodium-potassium pump ejects two Na+ from the cell and then transports three K+
back into the cell in order to maintain the concentration gradients for sodium and
potassium. - (correct answer)False
Opening K+ or Cl- channels in a postsynaptic membrane would produce an inhibitory
postsynaptic potential (IPSP). - (correct answer)True
, A primary active transport process is one in which __________. - (correct
answer)molecules move through transport proteins that have been activated by ATP
Some transport processes use transport proteins in the plasma membrane, but do not
require ATP. This type of transport is known as _____. - (correct answer)facilitated
diffusion
The majority of water molecules moving across plasma membranes by osmosis do so
via a process that is most similar to ____. - (correct answer)facilitated diffusion
The sodium-potassium pump uses ATP to move sodium and potassium ions across the
plasma membrane. This statement describes _____. - (correct answer)primary active
transport
A vesicle fuses with the plasma membrane and releases its contents to the extracellular
fluid. This statement describes _____. - (correct answer)exocytosis
Which of the following best explains diffusion? - (correct answer)movement of
molecules from an area of high concentration to an area of low concentration
Which of the following is most likely to move through the cell membrane by facilitated
diffusion? - (correct answer)Na+
What is the basic difference between simple diffusion and facilitated diffusion across a
cell membrane? - (correct answer)In facilitated diffusion, molecules only move with the
aid of a protein in the membrane.
Which of the following is least likely to increase the rate of diffusion? - (correct
answer)small concentration gradient
