When a membrane is at rest, which channels are open? O Voltage-gated calcium channels O Voltage-gated potassium channels O Leaky potassium channels O All the channels listed are open O Votlage-gated sodium channels

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: What ion enters a neuron causing depolarization of thecell membrane?a. sodiumb. chloridec.…

A: A neuron is also called as nerve cell. It is an electrically excitable cell that communicated with…

Q: most neurons have chemical junction chemical rather than electrical junctions

A: Transfer of signal from one neuron to another: The mechanism of transferring signals is accomplished…

Q: Which of the following would you predict would happen if you limited the amount of ATP to a neuron…

A: We have Na+/K+ ATPase channel that uses ATP to translocate 3 Na+ outside and 2 K+ outside which…

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

A: Action potential or an electrical impulse is another name for a nerve impulse. In contrast to a…

Q: The opening of axonal voltage-gated K+ channels is responsible for which part of the action…

A: Theses channels locate in cell membranes and control transportation of K +ions efflux from and…

Q: Axon can branch Afferent neurons are generally bipolar neurons Most neurotransmitters are…

A: Hey there! Since you have posted multiple questions we are answering only first three sub-parts.…

Q: The action potential is split into 4 parts (A-D). For each part, 1. Describe what stimulated the…

A: The term "Action Potential" refers to a quick brief rise in Membrane potential (Negative to…

Q: Which statement(s) regarding ions is true when a neuron is at rest? Positively charged cations are…

A: Neurons are also known by the name nerve cells. These cells are referred to as the fundamental units…

Q: Neurotransmitters released by pre-synaptic vessels are received by what type of proteins in the…

A: Neurotransmitters are chemical messengers that help to transmit neural signals from one neuron to…

Q: Which of the following best describes the electrical state of a neuron at rest? a. The inside of a…

A: In a neuron, the information which is conducted occurs through electrical signals. When a neuron is…

Q: What type of ion current could have produced the membrane potential in E? -40 -50 - -60- D E F -70-…

A: Membrane potential is defined as the electric potential difference across the membrane of a cell…

Q: Use the energy of ATP to maintain these K+ and Na+ gradients across the plasma membrane 000…

A: The movement of molecules from a region of lower concentration to a region of higher concentration…

Q: What is occurring during the repolarization phase of an action potential? O Voltage-gated…

A: Answer. All cells have an electrical potential difference, or membrane potential, across the plasma…

Q: Within a neuron an impulse travels: a. in all directions O b from cell body to axon from axon to…

A: A nerve impulse is the action potential that travels from cell body to axon.

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: The most important diffusible ion in the establishment of the membrane potential is a. K+. b. Na+.…

A: The biological membrane is made up of primarily phospholipids. It has a hydrophobic core, due to…

Q: Refers to the temporary time in which a neuron cannot be stimulated resting potential O refractory…

A: refractory period.

Q: The soma of a mature neuron lacks a. a nucleus.b. endoplasmic reticulum.c. lipofuscin.d.…

A: Answer is d.) centrioles.

Q: When no action potential is occurring, the inside surfaces of a cell membrane is ______.   A…

A: Within a single neuron, information is conducted through electrical signaling. When a neuron is…

Q: The resting potential of most cells is most dependent concentration gradient of: on the…

A: Answer - potassium The resting potential membrane is determined by  Potassium-ion gradient.

Q: If the membrane voltage is clamped at +60 mV. What direction does a Ca2+ ion move? inside the cell…

A: The cells of the body mainky the excitalbe cells like nerve cells and muscle cells have a property…

Q: Which of the following occurs first when voltage reaches the threshold level in a neuron plasma…

A: Ans: The potential is generated in the neuron or plasma membrane due to difference in sodium and…

Q: At rest, a neuron has a lower concentration of sodium than the surrounding fluid. When a neuron…

A: The nervous system is highly complex among different organ systems in animals. By transmitting…

Q: Plasma membrane permeability of which of the following ions is most important in generating the…

A: A neuron is negatively charged when it is at rest, more of the negative charge inside the cell than…

Q: The concentration of potassium ions inside a nerve cell membrane is higher than the concentration of…

A: Similar to plasma membranes, the membranes of neurons also contain selective permeability. This…

Q: Which part of a neuron transmits an electrical signal toa target cell?a. dendritesb. somac. cell…

A: The nerve cell is also called a neuron, the main part of the neural system. The millions and…

Q: Sodium (Na*) and Potassium (K+) are equally distributed across the neuronal membrane at resting…

A: BASIC INFORMATION   NEURON   It is the longest cell inside the human body  It is found in the brain…

Q: An influx of positive sodium ions eventually causes closing of the inactivation gates of voltage…

A: When a cell is at a resting state, generally the interior of the cell has negative charge than…

Q: The part of the neuron that is usually highly branched and receives input from other neurons is the…

A: Neurons are a particular form of cell that carry information messages or signals to and from the…

Q: The figure illustrates changes in membrane potential during an action potential. The action…

A: The graph represent the stages of conduction of nerve and the change in membrane potential of the…

Q: Depolarization is: O Is the last step of an action potential O A reduction in the electrochemical…

A: The action potential is the short-term change in the electric potential on the cell’s surface in…

Q: If all the channels in the membrane were open, what would happen to the length and time constants? O…

A: Answer is option A i.e. length and time constant will decrease. Explanation: As all channels will be…

Q: The membrane potential labeled (0) is due to which of the following (when compared to (3) potential.…

A: Resting membrane potential is about -90 MV which suggests that the negative charge within the cell…

Q: At rest, a neuron has a lower concentration of sodium than the surrounding fluid. When a neuron…

A: All capacities performed by the sensory system—from a basic engine reflex to further developed…

Q: __________ receive electrical impulses while ___________ conduct them to the next. regarding…

A: Motor nerves are present in CNS mainly in the spinal cord and transmit signals from CNS to muscle.…

Q: Which ion channel is open at phase K? M N K - -55 -70 Time Voltage-gated ion channel specific to…

A: The graph represents the phases of action potential . Action potential is the change in the membrane…

Q: Why is the resting membrane potential negative? Shouldn't it be positive as cells move in and out…

A: The difference in voltage or charge across the cell membrane when the cell is at rest or when the…

Q: What is the major determinant of the permeability of a membrane to a specific ion? Concentration of…

A: The specialized structure that is found surrounding the cell and protecting the internal environment…

Q: The part of the neuron that is usually a single lorg extension that conducts an impulse to a muscle…

A: Neuron is the nerve impulse producing and transmitting cells in the nervous system. They have the…

Q: The neuron cell is made up of which of the following parts? A. Axon B. Dendrite C. Nucleus D. All of…

A: Neuron is the structural and functional unit of the neural system. A neuron is a microscopic…

Q: Why does an action potential flow in only one direction? because voltage-gated sodium channels…

A: Neurons or nerve cells are the fundamental units of the nervous system. They are electrically…

Q: Part H - Putting the Events of the Action Potential into the Correct Sequential Order Drag and…

A: Action potential can be explained as the rapid rise and the fall of the membrane potential of a…

Q: Which part of the neuron likely contains the most vesicles? a. Dendrites b. Cell body c. Nucleus d.…

A: The neuron is the brain's fundamental working organ, a specialised cell that transmits information…

Q: Which of the following molecules is not involved in the maintenance of the resting membrane…

A: The membrane potential triggering arises when there is a sudden rise of action potential and a…

Q: A cell biologist is performing an experiment using the voltage clamp method in which they are…

A: Voltage Clamp Techniques are an electrophysiological technique to measure ion's current across the…

Q: Which type of gates are located in the dendrite membrane of the post-synaptic cell? O…

A: Branched extension of a neuron is called Dendrites , the electric signals emitted from projecting…

Q: If a biologist wished to cause a depolarization event in a neuron, what action would achieve this…

A: An action potential (AP) appears when the membrane potential of a particular cell location rapidly…

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.