Leak ion channelsa. open in response to small voltage changes.b. open when a chemical signal binds to its receptor.c. are responsible for the ion permeability of the resting plasmamembrane.d. allow substances to move into the cell but not out.e. All of these are correct.

Q: For a signal to be sent down an axon of a nerve cell, an action potential must be generated. This is…

A: signal to be sent down an axon of a nerve cell, an action potential must be generated.

Q: Voltage-gated sodium channels are open and allowing sodium to flow when: O The membrane is at the…

A: When the membrane potential of a particular cell site rapidly increases and decreases, an action…

Q: Positively charged ions flow out of the cell when voltage-gated _____ channels open.   A K+   B…

A: The potential difference between the inner and outer side of the cell membrane is called membrane…

Q: The resting membrane potential of a cell is the consequence of which of the following concentrations…

A: Introduction - The voltage across a cell membrane during its resting state is called the resting…

Q: Which of the following contribute(s) to the resting membrane potential?a. the relative leakiness of…

A: The neural system is composed of specialized cells. These cells are nerve cells (neurons). The…

Q: Which.of the following statements is WRONG? Select one: O a. Nerve cells have excitable membranes O…

A: Introduction: Neurons, also referred to as nerve cells, are the basic fundamental units of the…

Q: How can the resistance (Rm) of a membrane be increased? Increase conductance by opening ion channels…

A: A membrane resistance (Rm) is a measurement of how challenging it is for ions to cross the membrane.…

Q: During the cycling of neurotransmitters in the axon termini, the fusion of the neurotransmitter…

A: Neurotransmitters are chemical messengers that transmit signals across a chemical synapse, from one…

Q: Cell membranes can maintain a difference in electrical charge between the inte- rior of the cell and…

A: Cell membrane is negatively charged from inside in comparison to outside. But at the time of impulse…

Q: When a membrane is at rest, which channels are open? O Voltage-gated calcium channels O…

A: Neurons are the basic unit of the nervous system. The membrane potential of the neuron is…

Q: COMPARE AND CONTRAST THEM IN TABLES 1. action membrane potential and resting membrane potential…

A: Neurons transmit signals in the form of chemicals which are electrically charged. When chemicals are…

Q: Potassium flows the cell through leak channels, its gradient. into, down out of , up into , up out…

A: Generation of nerve impulse in nerve  fibre depends on distribution of sodium and potassium in and…

Q: 1. Which of the following could most quickly reverse calmodulin activity ? ADP A plasma membrane…

A: Calmodulin (CaM), also known as calcium-modulated protein, is a multipurpose intermediate…

Q: When protein membrane receptors are activated, what usually happens? The receptors open and close in…

A: Question - When protein membrane receptors are activated, what usually happens?  The receptors open…

Q: Describe the events that must occur to generate an AP. Relate the sequence of changes in…

A: The action potential is a quick increase and succeeding fall in membrane potential or voltage across…

Q: The purpose of gap junction is   Question options:   to provide intercellular communication…

A: Gap junctions develop when a set of six membrane proteins called connexins form an elongated,…

Q: Calculate the equilibrium membrane potential for Na* for an extracellular fluid concentration of 138…

A: Membrane potential is ion is defined as the difference in electrical change across the cell…

Q: What do neurons use to expel sodium into the extracellular space in order to maintain a strong…

A: Neurons are the basic unit of the brain. They are cell that passes information. Neurons cells are…

Q: At what time (in milliseconds) is the inside of the neuron the most positive and why?  Explain why…

A: The graph represents action potential in neuron.

Q: Which two ideas about ion channels of a neuron at its resting potential are true? O ion channels are…

A: The movement of ions across the plasma membrane is responsible for maintaining the resting potential…

Q: Which of the following represents amplification? O G protein activation by GPCR O Arrestin binding…

A: Signal transduction is the process by which a chemical or physical signal is transmitted through a…

Q: Given that tissue A has significantly more K+ leak ion channels thantissue B, which tissue has the…

A: Resting membrane potential is considered a product of the ion distribution across the membrane and…

Q: Resting membrane potential:   a. Is due to difference in permeability of cell membrane to ions b.…

A: Resting membrane potential is necessary for the functioning of the neurons and the muscle cells. Any…

Q: explain the difference between a ligand gated and voltage gated ion channel

A: Cell signaling begins with the interception of a signal or stimulus by a receptor molecule. The…

Q: - For the resting membrane potential: a- The inside is negative in comparison with the outside. b-…

A: Resting membrane potential is the voltage across the plasma membrane before the actual action…

Q: Which parameter Which parameter Which parameter is depicted on the x-axis? is depicted on the y-axis…

A: Neurons or nerve cells are the basic functional units of the nervous system. Their main function is…

Q: Voltage gated channels: O require a ligand such as acetylcholine require ATP hydrolysis for a…

A: Plasmamembrane is selectively permeable and it contains various voltage gated, ligand gated,…

Q: Explain, how and why the cells swell up (or even burst) if their Na/K pumps stop working.

A: A transmembrane ATPase which is responsible for pumping sodium ions out of the cell and bringing…

Q: A hyperpolarized cell can be generated when:   Group of answer choices A. ligand-gated ionotropic…

A: Introduction  Ionotropic receptors, also known as ligand-gated ion channels (LICs, LGIC), are a…

Q: Phase Peak Phase Falling Phase Q2. Phases of the action potential Rising Phase membrane is…

A: The nervous system establishes its function by the means of neurons or nerve cells that aid in the…

Q: Explain what is going on at sites A, B, C, D, F and G in relation to CHARGE (negative, positive,…

A: Action potentials are electrical impulses that neurons use to interact with one another. The…

Q: What enables action potential to jump from one node of Ranvier to the next? OA. Increased LC OB.…

A: Nodes of Ranvier are points in the axon where myelin sheath is absent and hence conductance is…

Q: Epilepsy is a chronic disorder characterized by seizures that result whenneurons in the brain…

A: Introduction: Epilepsy, also referred to as seizures, occurs due to the excessive discharge of the…

Q: The energy source for movements of Na* and K* during an action potential is a. the Na*/K* ATPase b.…

A: Neurons are highly specialised cells that serve as the fundamental units of the nervous system.…

Q: Difference in K* concentration across the PM pressure potential Both Difference in K+ concentration…

A: Resting membrane potential is the normal potential of the membrane it is negative inside and…

Q: Refer to the figure of an action potential. Which arrow best represents the point where the…

A: The correct answer is B. The arrow B represents the point where the permeability of sodium is the…

Q: What is the membrane topology of typical voltage-gated ion channels and how are they sensitive to…

A: Voltage gated Ion channels are a class of transmembrane protein channels that extend from one part…

Q: The negatively charged intracellular environment and resulting resting membrane potential of neurons…

A: INTRODUCTION The intracellular proteins are large and negatively charged. They present inside the…

Q: Our patient cannot remove potassium from their extracellular fluid. This is known as hyperkalemia.…

A: Hyperkalemia is a medical term given to a person having a potassium level in his or her blood that's…

Q: threshold resting membrane potential decrease calcium channels increase action potentials The…

A: Introduction: The action potential is the short series of events in the membrane potential that…

Q: myocytes, which of these downstream activities WOULD NOT occur when norepinephrine binds to the B,…

A: The cardiomyocytes are those muscles in the heart that constitute the cardiac muscle or the muscles…

Q: Please answer all of these questions below

A: Q. 1 The neurons have negative charge inside them as cell membrane is more permeable to potassium…

Q: In a resting excitable cell, the membrane is always slightly leaky to K*, because it has a small…

A: The electrical potential difference that exists across a cell's plasma membrane is known as the…

Q: A resting cell's membrane is more permeable to K+ simply because: K has a higher atomic number than…

A: