When a cell membrane potential shifts from -70mV to -90mV we say the membrane has:

Q: a cell with the following ion concentrations had a resting membrane potential of -40mV which of the…

A: Cell membrane is selectively permeable to some specific ions.

Q: Receptor for epinephrine consists of seven transmembrane helices. T/F

A: Epinephrine is secreted by adrenal medulla. It is also known as emergency hormone or hormones of…

Q: What is the free energy change for the transport of calcium ions (Ca++) across a membrane from a…

A: Ions are distributed on either side of the cell membrane. The transport of ions across the membrane…

Q: a) Explain in detail what is occurring at stage A in the graph. (Be specific in terms of what's…

A:

Q: If an ion has the same concentration on both sides of the membrane, then Eion will be: O Positive O…

A: The equilibrium potential for an ion is the electrical potential at which the electrical gradient…

Q: Every cell in the body has organelles called mitochondria that can generate a voltage difference…

A: I) The total energy it stored is U = 2.9× 10^-13J II) Number of molecules produced are 3×10^6

Q: The sodium-potassium pump generates the following concentration gradients across the plasma…

A: Membrane potential also called transmembrane potential or membrane voltage is difference in electric…

Q: Chloride ions (Cl-) are in higher concentration outside of the cell compared to the intracellular…

A: Ion channels across the membrane allow the movement of specific ions in the cell and outside. This…

Q: If the plasma membrane becomes more permeable to Cl-, would there be Clinflux or Cl- efflux at an…

A: The resting membrane potential, often known as the resting potential, is a voltage across the…

Q: V=62 log 10 (C0/Ci ) for a positive ion at 37 degrees Celsius. What is theoretical ratio of solution…

A: Biological membranes are made up of phospholipids. The phospholipids' heads groups face the cell's…

Q: channel gating is the process of opening and closing ion channels in a cell membrane  true or…

A: Introduction :- Ion channels are specialized proteins that span the cell membrane and selectively…

Q: when calculating the Resting membrance potential using the goldman equation it is usally out, out…

A: The Goldman equation is often used to determine the resting membrane potential of a cell.  It…

Q: The membrane of most cells, including neurons, contains passive, open, K' leak channels. Given the…

A: The cell membrane is the biological membrane that separates the interior of the cell from the…

Q: This question uses the same experimental setup as in Question 1 and the same modification of the…

A: The objective of the question is to understand the movement of sodium ions (Na+) when the membrane…

Q: The above repolarization of a neuron will result in which of the following ionic currents? a…

A: Action potential generates when the neurons want to pass the information along the body from its…

Q: if you inject current into the middle of an axon by using an intracellular electrode you will get…

A: A neuron transfers information out of the cell's body through an axon, resulting in an action…

Q: The resting membrane potential of a cell is polarized, meaning that it has a _____ charge on the…

A: The action potential generates when depolarization of the membrane occurs by a stimulus. The change…

Q: Explain why the inside of the membrane changes form a jet negative charge to a positive charge at…

A: Whenever a nerve impulse is communicates from a cell body, the sodium directs the cell membrane open…

Q: Which of the following intracellular potentials would have the greatest electrical attraction for…

A: Cell Membrane potential is a potential slope that forces ion particles to move in one side. positive…

Q: Many cells in the human body maintain an electric potential difference across their cellular…

A: Introduction :- All cells have a cell membrane, also known as a plasma membrane, which separates the…

Q: After an action potential has been initiated, there are two processes that prevent the membrane from…

A: The generation of action potential is very much important characteristics in nerve cells that is…

Q: + + + +, 212 LOGY - BIt | + + + Given the information provided in this question, if 212 is an anion…

A: The cell's interior is usually negative at resting membrane potential. This membrane potential is…

Q: An experimental cell line expresses K+ inward rectifier channels, Na+ leak channels, K+ channels…

A: The α-1 adrenergic receptor is a type of receptor that is responsible for mediating the effects of…

Q: What is the emf of a cell consisting of a Pb2+/Pb half-cell and a Pt/ H / H₂ half-cell if…

A: Step 1: Standard reduction potential of Pb2+/Pb = - 0.13 V. Standard reduction potential of Pt/H+/H2…

Q: It is typically sufficient to rupture cells when the solute concentration is reduced from 0.15M to…

A: Osmotic pressure is the pressure that develops when two solutions of different concentrations are…

Q: Initial Extracellular fluid Solute Plasma membrane Cytoplasm В

A: Ans : The panel D represents the situation in which the concentration gradient of solute is…

Q: An experimental cell line expresses K+ inward rectifier channels, Na+ leak channels, K+ channels…

A: Because alpha-1 adrenergic receptors are found in both vascular smooth muscle and cardiac tissue,…

Q: Na+1 is a charged ion that cannot easily cross the membrane. Is there any way for this ion to get…

A: the flow of Na+1 ion across a membrane depends on stimulus. whenever a cell membrane gets activated…

Q: What is the correct rank the following molecules in regards to membrane permeability from MOST (1)…

A: Permeability is a fundamental property of the cell membrane which is essential for the maintenance…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.