Ion Transport Pumps And Generation Of Ion Gradient Flashcards
What is meant by the term “electrochemical gradient”
The combination of the concentration gradient and the electrical potential difference. And it determines the transport of the solute e.g how and where the solute goes
What is the primary function of the sodium potassium pump
To maintain a resting membrane potential
How many sodium ions are moved out of the cell by the sodium potassium pump
Three
What energy currency is used by the sodium potassium pump
ATP
What is the result of the sodium potassium pumps activity
More sodium ions outside and more potassium ions inside the cell
What transport does the sodium potassium pump use
Active transport
What ions have trouble travelling directly through the cell membrane
Sodium and potassium
What happens when potassium ions travel outside the cell
The cell becomes more negative
What is the significance of the electrochemical gradient established by the sodium potassium pump
It allows for cellular responses like action potentials
What is the action of the sodium potassium pump and how many ions are moved and where
Three sodium ions are pumped out the cell and two potassium ions are pumped into the cell
What is one function of the sodium potassium pump
Maintaining the osmotic balance
What is one function of the sodium potassium pump
Generation of the ion gradient for glucose symport in small intestine
What is one function of the sodium potassium pump
Generation and long term maintenance of ion gradient for resting potential in neurons
What is one function of the sodium potassium pump
Generation of ion gradient in kidney tubules
What is a symport protein
A transporter that transports molecules across the plasma membrane at the same time and in the same direction
