In the above diagram, letter C represents: O A voltage-gated K+ channel O A leaky Na+ channel O A leaky K+ channel O A voltage-gated Na+ channel

Q: A graded potential that achieves threshold leads to the generation of an action potential. Which one…

A: Graded potentials are made by outside stimuli in sensory neurons or by neurotransmitters discharged…

Q: You are recording the electrical activity of a cell body with a resting membrane potential of -70…

A: Given; Resting membrane potential of the cell= -70mV No. of stimuli detected by the cell= 3 from…

Q: Which of the following is not an excitatory ligand-gated ion channel? NACHR AMPAR ASIC GABA-AR

A: Neurons send electrical signals by generating and transmitting action potentials. Neurons have…

Q: Some neurons have very long dendritic arbors. Scientists wanted to understand how synaptic currents…

A: The study of neuronal dendrites and their part in action potential generation is an interesting area…

Q: You are recording the resting membrane potential from a neuron placed in a petri dish. The following…

A: The correct answer to this question is option C i.e. increase concentration of K+.

Q: Consider the following graph of an action potential: 60- 30- membrane potential (mV) O -30- -60 line…

A: Action potential refers to the sudden rise and fall of membrane potential across a cellular membrane…

Q: At resting membrane potential for a typical neuron (-70 mV), which ion does NOT move? Na+ Ca2+ K+…

A: A resting (non-signaling) neuron has a voltage called the resting membrane potential, or simply the…

Q: Which is TRUE about neuronal membrane electrical and concentration gradients at the peak of the…

A: An action potential is sudden and transient changes in the voltage across a biological membrane. It…

Q: (II) OI O II O III (IV) On the figure ABOVE, which panel (I, II, III or IV) represents a ligand…

A: Picture a tiny gatekeeper regulating the passage of charged particles such as calcium, potassium,…

Q: This graph shows the relative voltage of a neuron's cytoplasm near the plasma membrane relative to…

A: * There are three stages in membrane potential  Depolarization  Repolarization Hyperpolarisation…

Q: How does the presence of basic amino acids within the S4 helix allow for voltage gating in these…

A: Introduction Amino acids are organic compounds that serve as the building blocks of proteins. They…

Q: This type of signal involves the movement of ions across the plasma membranes: graded potentials…

A: Cell connections link directly to the cytoplasm of neighboring cells. When cytosolic chemicals can…

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: What happens to the membrane potential inside and outside of the cell when K+ channels are open?

A: Potassium Channels are actually membrane proteins that allows  K+ ions to come in across the cell…

Q: What is the relationship between the sodium-potassium pump and a neuron's resting membrane…

A: The sodium-potassium pump (Na,K-ATPase) was discovered in 1957. It is required for nerve…

Q: 66) A researcher conducts a voltage clamp experiment on a giant squid axon. She clamps a typical…

A: A voltage clamp is a technique in electrophysical technique that is used to measure the amount of…

Q: You generate action potentials in a neuron bathed in solution in a petri dish by applying a…

A: An action potential is a rapid sequence of changes in the voltage across a membrane. This action…

Q: What are THREE major functional characteristics of the voltage-gate Na+-channels and how do these…

A: Voltage gated sodium Ion channels are integral membrane proteins, present in the cell membrane of…

Q: Which of the following BEST explains the inside negative potential in resting neurons? sodium flows…

A: This explanation is accurate because, in resting neurons, the membrane is primarily permeable to…

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: Which of the following characteristics of a graded potential explains the reason graded potentials…

A: Graded potentials are primarily generated at localized places on the cell membrane where an…

Q: Membrane Potential (mV) -70 + 1 3 Time (ms) 1 Na* continues to rush into the cell E Excess…

A: The Na +K + pump is found in cell membrane of neurons as well as in other animal cells. It helps in…

Q: Wriich of the lollowing thuices correctly ills in the blanks? During repolarization, the sodium ions…

A: The process of generation of action potential is a complex process and it involves three main phases…

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: Each of the following is a correct relationship between action potential phase and channel status…

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

Q: Compare the resting membrane potential of a neuron with the potassium and sodium equilibrium…

A: Ans: The electrical potential difference between outside and inside of the membrane is referred to…

Q: You are obtaining extracellular recordings from the lateral axons of the earth worm. The distance…

A: For the calculation of conduction velocity we have to use the following equation Velocity =…

Q: Toxins such as tetrodotoxin (from puffer fish and newts) andsaxitoxin (from red-tide…

A: Introduction Toxins are dangerous substances produced by live cells or organisms; synthetic…

Q: You find a neuron whose resting potential is -90mV. Which of the following are likely to be true?

A: Neurons are structural and functional units of the nervous system. They are originated from…

Q: Explain the difference between a “leak” channel and a gated channel. Use an example.

A: The plasma membrane is a semi-permeable entity in a cell. It permits the movement of specific ions,…

Q: Select one: O A. hyperpolarizing phase; K channels open B. hyperpolarizing phase: Na channels open…

A: The action potential is the change in the electric potential across the plasma membrane.

Q: Membrane permeability at the falling phase of an action potential is dominated by: O Co-transporters…

A: The neurons send signals over long distances by generating and propagating action potentials over…

Q: which are Communication between neurons is mediated by rapid changes in propagated along the length…

A:

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.