Briefly describe the significance of permeability and ionic concentrations in the process of maintenance of cellular membrane potential.

Q: Discuss the mechanism of action-potential in neurons?

A: Introduction: All excitable tissue like nerve and muscle tissue have membrane potential. The…

Q: The exocytosis of the synaptic vesicles depends on:

A: Synapse is the junction between two neurons. It is formed between the dendrites of one neuron and…

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: Describe in detail what resting membrane potential is and what role the sodium/potassium leakage…

A: INTRODUCTION Resting membrane potential A potential difference across all cell membrane is called…

Q: Define the term voltage-gated ion channels?

A: Ion channels are specialized membrane proteins that allow the passage of ions through the pores…

Q: Explain how the resting membrane potential is established and maintained.

A: The separation of the relative positive and negative charges across the membrane of a cell at rest…

Q: Describe the activity of the sodium-potassium pump and indicate its importance to the cell.

A: For every 2 potassium ions carried in, it serves to carry sodium and potassium ions in a proportion…

Q: Are the membrane potential functions direct or indirect?

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all…

Q: Describe the structure, locations, and functions of gap junctions.

A: The cells are the primary unit of life. Based on the number of cells an organism may be unicellular…

Q: What happens to the membrane potential inside and outside of the cell when Cl- channels are open?

A: Ion channels are integral proteins that provide for the regulated transport of a specific ion, or…

Q: Describe how the magnitude and polarity of the sodium and potassium membrane currents vary with the…

A: The activation of a neuron or muscle fiber is mediated through the modulation of its membrane…

Q: Define adipocytes?

A: The cells are the primary unit of life. An organism may be unicellular or multicellular. The…

Q: Explain what a membrane potential is.

A: The neuron is the structural and functional unit of the nervous system. The neuron is also known as…

Q: Discuss the Nature and Magnitude of the Resting Membrane Potential?

A: Resting Membrane Potential is generated by the movement of ions across the membranes and ions an be…

Q: Is THE resting membrane potential negative?

A: Answer- Membrane potential is the gradient of potential that is required to move ions passively…

Q: Explain the Nature and Magnitude of the Resting Membrane Potential?

A: Neurons are the important brain cells that generate electric signals by the changes in the cell…

Q: dEfine the term Axonal transport?

A: Axonal transport occurs through the cytoplasm of axon called axoplasm.

Q: How do leak channels contribute to resting membrane potential?

A: The nerve impulse is an electrical signal that travels along the neuron. The charged particles…

Q: Summarize the steps establishing the resting membrane potential?

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride…

Q: Contrast the abilities of intracellular and extracellular fluids andmembrane lipids to conduct…

A: impulses are flows into the dendrites and cell body of most neurons by acetylcholine. impulses are…

Q: Describe the changes in membrane permeability that underlie the membrane potential changes

A: The human body is formed from totally different organs and organ systems. There are eleven…

Q: Indicate zero membrane potential, resting membrane potential, and threshold potential; indicate when…

A: Introduction  Chloride is the most abundant anion in the extracellular fluid. Along with Chloride…

Q: Discuss about cell locomotion machinery.

A: Cell locomotion is the movement of a cell from one place to another. There are various mechanisms or…

Q: describe what the resting membrane potential of a cell is. What is the resting membrane potential of…

A: Resting membrane potential occurs because of changes in permeability of membrane for…

Q: Describe the contribution of each of the following to the establishment and maintenance of membrane…

A: In this question we have to describe aboutestablishment and maintenance of membrane potential  See…

Q: Distinguish between active and passive mechanisms of movement across cell membranes.

A: The cell membrane is a kind of barrier through which the molecules enter as well as exit the cell.…

Q: Provide and explain 3 factors  that affect cell membrane permeability?

A: cell membrane is the phospholipid bilayer , which helps protecting the inside of cell , by forming a…

Q: Differentiate between ligand - gated and voltage-gated channels.

A: The transportation of molecules across the plasma membrane is carried out with the help of…

Q: Describe the functions of the smooth endoplasmic reticulumin hepatocytes and muscle cells.

A: Endoplasmic reticulum is a continuous membrane system that forms a series of flattened sacs within…

Q: In somewhat simple terms please explain the differences between electrical signal propagation…

A: Gap junctions are channels that connect adjacent cells. They help in the transfer of molecules…

Q: b) Complete the following flow chart| (a membrane phospholipid)_ Hydrolysed by phospholipase C, to…

A: Inositol Triphosphate is a second messenger in the IP3 - DAG pathway. This pathway regulates many…

Q: illustrate some of the major points concerning G proteins, plasma membrane effector proteins, second…

A: Introduction  Hormones regulates various physiological activities of the body such as growth,…

Q: В АВ CD Time Membrane potential (mv)

A: the threshold potential is the critical level to which a membrane potential must be depolarized to…

Q: Describe the proteins involved in membrane fusion and neurotransmitter release that are located on…

A: During the neurotransmitter release, several SNARE protein complexes are involved with synaptobrevin…

Q: Summarize the Development of a Resting Membrane Potential?

A: All the cells have a membrane that separates the inner side of the cell which contains cell…

Q: What kind of membrane transport occurs when pre-synaptic neurons release neurotransmitters?

A: Neurons (also known as neurones or nerve cells) are the basic components of the brain and nervous…

Q: Why is the movement of ions across the plasma membrane important, and in which direction do ions…

A: The cells are separated from the external environment by the presence of Plasma membrane. The…

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

A: Sodium- Potassium pump  The sodium - potassium pump involves protein called the sodium- potassium…

Q: Describe the plasma membrane calcium pump

A: The plasma membrane Ca2+ ATPase (PMCA) belong to the family of P-type primary ion transport ATPases…

Q: Explain Extracellular signals can be delivered by diffusion or by cell-to-cell contact.

A: Cell signaling can be defined as the fundamental process by which the specific information is…

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.