SAQ - Function of sodium-potassium pump

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What is the primary function of the sodium-potassium pump?

To break down ATP into smaller molecules

To maintain a higher concentration of sodium ions inside the cell

To generate action potentials in neurons

To transport sodium ions out of the cell and potassium ions into the cell (correct)

What is the energy source used by the sodium-potassium pump?

Phosphate group

Sodium ions

ATP (correct)

ADP

What is the result of the sodium-potassium pump's activity on the resting membrane potential?

It becomes more positive

It becomes slightly more negative (correct)

It remains unchanged

It becomes highly negative

What is the process by which ATP transfers a phosphate group to the pump?

Phosphorylation Signup and view all the answers

How many sodium ions are transported out of the cell during each cycle of the pump?

3 Signup and view all the answers

What is the purpose of maintaining a higher concentration of sodium ions outside the cell?

To stabilise the cell's membrane potential Signup and view all the answers

What is the effect of the sodium-potassium pump on the concentration of potassium ions inside the cell?

It increases the concentration Signup and view all the answers

What is the purpose of the sodium-potassium pump in neurons?

To support the electrical signalling of neurons Signup and view all the answers

What is the binding ratio of sodium to potassium ions during each cycle of the pump?

3:2 Signup and view all the answers

What is the primary composition of the cell membrane where the sodium-potassium pump operates?

Phospholipids, glycolipids, sphingolipids, and cholesterol Signup and view all the answers

What is the direction of ion transport during the sodium-potassium pump's activity?

Active transport of sodium ions out of the cell and potassium ions into the cell Signup and view all the answers

What is the significance of the sodium-potassium pump's activity in maintaining the electrochemical gradient?

It helps to maintain a higher concentration of sodium ions outside the cell and a higher concentration of potassium ions inside the cell Signup and view all the answers

Which of the following is an indirect consequence of the sodium-potassium pump's activity?

Maintenance of osmotic equilibrium Signup and view all the answers

What is the net result of the sodium-potassium pump's activity on the membrane potential?

It maintains the membrane potential Signup and view all the answers

What is the significance of the sodium-potassium pump in nerve impulse transmission?

It helps to maintain the resting membrane potential Signup and view all the answers

What is the primary function of the electrochemical gradient created by the sodium-potassium pump?

To facilitate the transmission of nerve impulses Signup and view all the answers

What is the direction of ion movement in active transport?

Against their concentration gradient Signup and view all the answers

What is the role of carrier proteins in the sodium-potassium pump?

To facilitate the movement of ions across the cell membrane Signup and view all the answers

What is the consequence of the influx of calcium ions in the axon terminal of the presynaptic cell?

The release of neurotransmitters Signup and view all the answers

What is the result of the sodium-potassium pump's activity on the cell membrane?

The maintenance of the concentration gradient and electrical gradient Signup and view all the answers

What is the significance of the sodium-potassium pump in nerve impulse transmission?

It enables the transmission of nerve impulses Signup and view all the answers

SAQ - Function of sodium-potassium pump

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Questions and Answers

What is the primary function of the sodium-potassium pump?

What is the energy source used by the sodium-potassium pump?

What is the result of the sodium-potassium pump's activity on the resting membrane potential?

What is the process by which ATP transfers a phosphate group to the pump?

How many sodium ions are transported out of the cell during each cycle of the pump?

What is the purpose of maintaining a higher concentration of sodium ions outside the cell?

What is the effect of the sodium-potassium pump on the concentration of potassium ions inside the cell?

What is the purpose of the sodium-potassium pump in neurons?

What is the binding ratio of sodium to potassium ions during each cycle of the pump?

What is the primary composition of the cell membrane where the sodium-potassium pump operates?

What is the direction of ion transport during the sodium-potassium pump's activity?

What is the significance of the sodium-potassium pump's activity in maintaining the electrochemical gradient?

Which of the following is an indirect consequence of the sodium-potassium pump's activity?

What is the net result of the sodium-potassium pump's activity on the membrane potential?

What is the significance of the sodium-potassium pump in nerve impulse transmission?

What is the primary function of the electrochemical gradient created by the sodium-potassium pump?

What is the direction of ion movement in active transport?

What is the role of carrier proteins in the sodium-potassium pump?

What is the consequence of the influx of calcium ions in the axon terminal of the presynaptic cell?

What is the result of the sodium-potassium pump's activity on the cell membrane?

What is the significance of the sodium-potassium pump in nerve impulse transmission?

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