Neuronal Cell Membrane and Resting Membrane Potential Quiz

Play an AI-generated podcast conversation about this lesson

Why is the resting membrane potential (RMP) not exactly equal to the equilibrium potential of K ion?

Due to the presence of positive ion concentration gradient from outside to inside

Due to the high permeability ratio of Na ions

Due to the permeability of Na and Cl ions in addition to K ions (correct)

Due to the low permeability ratio of K ions

What is the Nernst potential of K?

-100 mV

-94 mV (correct)

-86 mV

-70 mV

What does Goldman's equation take into account when calculating the RMP?

Only the permeability ratio of K ions

All electrolytes with their permeability ratios (correct)

The equilibrium potential of K ion only

Only the concentration gradient of positive ions

What causes electronegativity inside the membrane according to the text?

Diffusion of positive ions to the inside Signup and view all the answers

What is the resting membrane potential (RMP)?

The electrical potential difference across the plasma membrane of a cell at rest Signup and view all the answers

What creates an electro-chemical gradient across the cell membrane?

The active Na-K ATPase pump on the cell membrane Signup and view all the answers

What provides the basis for cell signaling?

Resting membrane potential Signup and view all the answers

Which ions have a higher concentration inside the cell compared to outside?

K+ only Signup and view all the answers

What is the cell membrane highly permeable to?

Potassium ions Signup and view all the answers

Which ion is relatively impermeable to the cell membrane?

Sodium (Na) ions Signup and view all the answers

What type of force initially causes potassium (K) to move out of the cell?

Chemical gradient force Signup and view all the answers

What is generated as potassium (K) leaks out and carries positive electrical charge to the outside of the cell?

Diffusion potential Signup and view all the answers

What is the Nernst potential associated with?

Equilibrium of potassium outflux Signup and view all the answers

What does the Nernst equation help calculate for any univalent ion at normal body temperature?

Electromotive force (EMF) Signup and view all the answers

Neuronal Cell Membrane and Resting Membrane Potential Quiz

Podcast Beta

Questions and Answers