in the number of receptors a cell has when it is getting "Up-regulation" refers to a(n). stimulation. Oa decrease too much b.decrease: not enough c increase; too much d. increase; not enough e. none of the above

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: A perturbation that alters the membrane potential at a site on a neuronal axon will pass to…

A: Ion transport through ion gated channels is an example of passive transport because energy is not…

Q: In axons, a negative inside membrane potential may be achieved by a difference in concentration of 2…

A: In axons, a negative inside membrane potential may be achieved by a difference in concentration of 2…

Q: Positive feedback processes invloves : a) Work in anticipation of changes in regulated variable b)…

A: The term positive feedback is related to homeostasis. Thr homeostasis is the body's ability to…

Q: Name the three types of cell communication.

A: The cell is the smallest structural and functional entity of a living organism. In a multicellular…

Q: Imagine that a neuron has 5X higher sodium outside than inside and 10X higher potassium inside than…

A: The movement of the cell constituents inside and outside of the cell is mediated by  selectively…

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: what happens when an antagonist binds to an inhibitory neurotransmitter receptor? a) it would…

A: When an antagonist binds to an inhibitory neurotransmitter receptor it would decrease inhibitory…

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: Substances that mediate and amplifies signals inside the cell called __________ (H) __________

A: Signal amplification means when the original signal is conveyed it is in Lower frequency and when it…

Q: "In repolarization, potassium channels close and additional sodium channels open; sodium movement…

A: Repolarization allides to the changes in membrane potential that goes back to a negative value soon…

Q: How can one differentiate place cells, grid cells and border cells experimentally? O a. Compare cell…

A: In the hippocampus, neurons and it's adjacent regions shows a broad variations of spatial activation…

Q: Which of the following statements regarding polarized membranes is incorrect? a. There is a…

A: At rest, the ionic composition of the interior and outside of a neuronal membrane varies. As a…

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: In the figure below, assume each vesicle represents many vesicles. From which of the three axon 2.…

A: In A, there are 4 transporters and 2 neurotransmitters have touched the pre-synaptic membrane of the…

Q: During which step of signal transduction is a second messengerreleased into the cytoplasm?a.…

A: The nervous system comprises the brain, neurons and spinal cord. The nerves are responsible for…

Q: What is the mechanism by which voltage-gated channels open in response to voltage changes? Choose…

A: Voltage-gated ion channels are found buried in the plasma membrane of the cells. These gated ion…

Q: What happens to the sodium when the sodium channels open?

A: Sodium channels are basic film proteins that structure particle channels, directing sodium…

Q: Axons in the nerves. a. increase the surface area of the cell b. receive signals from neighboring…

A: Axons are the part of nerve cell or neuron.

Q: . A lesion with a bright signal on a DWI means that a. astrocytes and microglia are [proliferating…

A: DWI refers to diffusion-weighted magnetic resonance imaging it uses the specific MRI sequences as…

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: What is the normal concentration of sodium and potassium inside a cell compared to outside the cell?

A: Every cell has an electrical potential differential across the plasma membrane while it is at rest,…

Q: A neuronal precursor in a fly embryo expresses which molecule to signal neighboring cells not to…

A: In fly and other invertebrates, a group of neuroprogenitor cells arising from the neurectoderm,…

Q: A choose your answer. Unipolar Neuron Multipolar Neuron Bipolar Neuron Neuron B is a choose your…

A: Neurons (nerve cells) are defined as the fundamental working unit of the brain and nervous system…

Q: A sodium channel in a nerve membrane a)Inactivation gate closes when the membrane reaches ~+30 mV.…

A: These are integral membrane proteins that form ion channels,  conducting sodium ions through a…

Q: Andrew was taken to the doctor’s office after he was bitten by a stray dog. The concern was that the…

A: To say the movement of substances within a nerve cell is anterograde means they move towards the…

Q: You have a photoreceptor cell in a dish. You are recording its membrane potential while flashing…

A: Answer :- Option (B) is correct. - The cell depolarizes, with brighter light causing more…

Q: which of the following would be false? a) summation of B and C would not change membrane  b)…

A: An excitatory postsynaptic potential (EPSP) is the adjustment in film voltage of a postsynaptic 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: In the membrane of a neuron, what happens during an IPSP? A. All the ion gates in the membrane…

A: The nerve tissue is made up of many nerve cells called as neurons. These neurons are the structural…

Q: Similarly, what will be the effect on membrane potential if Ct ions move into the cell? a) Ct entry…

A: The resting membrane potential (RMP) is due to changes in membrane permeability for potassium,…

Q: Which of the following will you consider as having the highest potency? A Neuronal progenitor cell B…

A: Totipotency is the ability of a single cell to divide and produce all of the differentiated cells in…

Q: identify each of the following as the set point, a receptor, the control center or an effector.…

A: Set Point is something which is the normal reference point of any parameter inside the body.…

Q: Photoreceptor cells in the retina of the eye convert visible light into signals. They have special…

A: The the rod and cone cells in the retina are responsible for sensing the dim and colour vision…

Q: Name the structure that the arrow is pointing at? A. Dendrite B. Axon hillock C. Cell body D.…

A: NEURON It isthe basic most structure of the nervous system. These are the cells within the nervous…

Q: The primary difference between an EPSP and an IPSP is the a) overall speed b) degree of effect c)…

A: EPSP = Excitatory postsynaptic potential.  IPSP = Inhibitory postsynaptic potential .   EPSP…

Q: HING: ELECTRICAL IMPULSES IN NEURONS 1. Depolarization A. a cell whose internal environment has an…

A: Given

Q: After a receptor cell is stimulated, the bipolar cell receiving input from it shows an immediate…

A: The retina is the major tissue that receives light and is located at the back of the eye. It…

Q: GABA is an example of an inhibitory neurotransmitter. Drugs that increase the level of GABA are used…

A: Neurotransmitters are substances in our body that carry signals from one nerve cell to another.…

Q: Living cells utilize a complex collection of interacting ....... to receive different signals from…

A: Cells are the basic unit of life. Different cells are combined together to form different structures…

Q: Is there any receptor (s) on the interior / cytoplasmic side of tha plasma membrane ? If yes ,…

A: The cells respond to extracellular signals through receptors. These receptors are located on the…

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: Transmission of a nerve impulse across a gap between neurons is due to: a) Movement of a molecule, a…

A: Transmission of nerve impulse takes place jn brain as a result of stimuli. They are transmitted from…

Q: The diagram below indicates different ion concentrations from the inside to the outside of a neuron…

A: The electrical activity of the neuron is generated by the differential concentration of specific…

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

A: A. Remaining at rest requires the use of ATP.

Q: Which of the following is the correct order of normal transmission of information within a neuron?…

A: Control and coordination are two important features of the human body . It helps maintaining proper…

Q: he following graph represents a membrane potential recording in the dark, then during a brief flash…

A: During Dark cGMP concentration high which causes open cGMP gated Na channel . Thus Na ions enters in…

Q: A very high amount of would then be an influx of 2 channels to open. There 3ions and calcium ions,…

A: Introduction Electrochemical Messages Are Sent By Neurons. Chemicals Create An Electrical Signal In…

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.