The resting membrane potential… A) Can be approximated using the Goldman-Hodgkin-Katz equation. B) Represents a difference in charges across the cell membrane, resulting mostly from the passive flow of Na+ ions. C) Has no influence on the driving force that acts on different ions across the cell membrane. D) Is equally dependent on the concentration gradients of potassium and sodium across the cell membrane. E) Becomes hyperpolarized during an excitatory graded potential.

Q: The Na+/K+ pump is important for ________ in neurons. A) the depolarizing phase of the action…

A: Neurons are the basic structures and functional units of the nervous system. The axon or the…

Q: Which statement is TRUE regarding the Na+ voltage-gated channel in neurons? A) Similar to the…

A: Channels are integral membrane protein that have a pore in the middle through which ions/solutes can…

Q: Draw a sketch of a graph showing a complex AHP consisting of a first component AHP, an ADP, and a…

A: AHP is the afterhyperpolarization while ADP is afterdepolarization. In AHP the membrane potential…

Q: Which of the following is comparable to a positive feedback cycle? a) opening of voltage-gated Ca2+…

A: The positive feedback mechanism is responsible for the increase in the output, as the amplification…

Q: Read the following statements (a) The resting nerve membrane is freely permeable to Na*, K* ions and…

A: B and C

Q: neuron

A: An action potential is triggered by a graded potential that causes the membrane to depolarize until…

Q: The approximate protein:lipid ratio in the plasma membrane of a myelin cell is: a) 1:10 b) 3:1 c)…

A: Ans - The approximate protein:lipid ratio in the plasma membrane of a myelin cell is 1:4. (a)  #…

Q: 14) at which voltage do Na+ voltage gated channels open? a) 30mV b) -70mV c) 0mV d) -55 mV

A: Introduction: Since their membranes are polarized, neurons are excitable cells. The neural membrane…

Q: In a nerve cell membrane, the ion channels that allow the diffusion of Na+: a) are always open. b)…

A: SODIUM CHANNELS These are the integral membrane proteins that form ion channels, conducting sodium…

Q: 1) When threshold (-55 mV) is reached: a) voltage-gated K+ channels immediately open. b) Na+…

A: Step 1 The membrane potential is the transmembrane electric potential difference measured from…

Q: excitatory and 15 inhibitory postsynaptic potentials appear simultaneously on the plasmatic membrane…

A: EPSP is the excitatory postsynaptic potential. This is the graded potential whose function is to…

Q: Finally, what will be the effect on the membrane potential if K+ loan move out of the cell?a) K+…

A: The sodium-potassium pump is an important ATP-based pump found in the cell's plasma membrane. The…

Q: In many organisms, the central nervous system relies on specialized cells called neurons to…

A: Membrane transport is a mechanism in which molecules/ substances are transported across the membrane…

Q: Please answer  3) Which of the following keeps the impulse traveling in one direction down the…

A: The nerve impulse helps in performing the motor and sensory functions of the body. The nerve cells…

Q: cetylcholine binds to a GPCR on heart muscle, making the heart beat more slowly. The activated…

A: Acetylcholine slows the heart rate by activating the M2 muscarinic receptor. It opens the…

Q: Typically, there is an ion gradient between the cytoplasm and the interior of synaptic vesicles. The…

A: Neurotransmitters are the chemicals that are secreted by "nerve cells" or neurons to carry the…

Q: Which one of these is an example of an excitatory postynaptic potential in a typical neuron? a) A…

A: Introduction EPSPs Are Connected With A Transmitter-induced Increase In The Synaptic Membrane's Na+…

Q: Which of the fallowing is required to generate a membrane potential? I. A concentration gradient of…

A: Thank you for the question  Answer = The correct answer is option D ( 1 and 3) Membrane potential is…

Q: Which factors in the establishment of the membrane potential are considered in the Nernst equation?…

A: Resting membrane potential is defined as the electrical potential difference across the cell…

Q: 24) a neuron that has as its primary function the job of connecting other neurons is called a(n)?…

A: The Neurons are data messengers. They utilize electrical driving forces and chemical signs to…

Q: If the equilibrium potential for K+ is -90mV, and the charge inside the cell is -70mV, which…

A: Membrane potential is the difference in internal and external electric potential of a cell. This…

Q: 12) when K+ voltage-gated channels open, which of the following occurs? a) depolarization  b) both…

A: In that they repolarize activated neurons to their resting state, voltage-gated potassium channels…

Q: 60. The action potential of a normal axon is shown on the graph. K* conductance is maximal at which…

A: Introduction :- An action potential (AP) is defined as a rapid rise and fall in the membrane…

Q: How does the voltage sensor of a voltage-gated ion channel work?

A: In a voltage-gated ion channel have a voltage sensor. These voltage sensors are sensitive to changes…

Q: Which statement is true regarding the nervous system?  a) Damaged myelin on an axon has no effect…

A: The neurons are responsible for nerve impulse generating and transmitting cells in the nervous…

Q: Why do cells that are not electricallyactive contain voltage-gated ionchannels?

A: The nervous framework is the piece of a creature's body that organizes its conduct and communicates…

Q: The resting membrane potential in neurons is described as an electrochemical gradient. You have…

A: Resting membrane potential (RMP) is defined ss the potential inside the cell when the cell is in…

Q: Inhibitory neurotransmitters are expected to A) close potassium channels. B) hyperpolarize the…

A: Neurotransmitters are the chemical messengers that help in the conveyance of the message from the…

Q: Voltage-gated ion channels on the cell body: a) allow Ca2+ to enter, leading to neurotransmitter…

A: Voltage gated transport – Voltage-gated channels help in the movement of molecules in and out of the…

Q: Please give an example of Validity experimental study.

A: Experimental validity refers back to the manner where in variables affect each the effects to…

Q: What is an electrochemical gradient? What is responsible for the generation of the resting membrane…

A: In living things the semipermeable membranes play an important role in creating gradients of…

Q: Cardiac and skeletal muscle are both “striated” types of muscle and yet they have very distinct…

A: The skeletal muscles are a part of muscle tissue in the body. They are attached to the bones by the…

Q: The axon cable model is good to describe: A) Only the re-polarization of the membrane C) The…

A: > Neuronal cable theory-  is a theory that includes assumptions and results relating to the…

Q: 1) State whether the property described below is one of electrical synapses, chemical synapses, or…

A: The transmission of nerve impulse from one neuron to the next neuron occurs in synapse that is the…

Q: The all-or-none principle, associated with the action potential, states that once membrane potential…

A: Neurons are responsible for the electromagnetic conduction of the signals in the form of stimulus.…

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.