How does Na+/K+ ATPase/Pump promote osmosis across plasma membrane? How does it establish the basal metabolic rate? Lastly, what does it mean when the pump self-phosphorylates during transportation?

Q: How does the intensity of facilitated diffusion vary in relation to the concentration of the moved…

A: Facilitated diffusion is a passive movement of substances through membrane proteins. The process is…

Q: What are driving forces and how do they establish electrochemical gradients across cell membrane?

A: Electrochemical gradient is mainly potential difference due to differences in electrical and…

Q: Does active transport move high to low concentration?

A: Cell transport is the transfer of materials over cell membranes. Cell transport involves passive and…

Q: In which way are voltage-gated ion channels and active transporters similar?  a   they are…

A: The molecules and ions can travel through the membranes. The membranes include the cell membrane,…

Q: When we discuss the "physiological concentrations of Na* and K+", what actually sets these…

A: Active Transport: Active transport is a type of cellular transport mechanism in which cells move…

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: List three types of movment displayed by molecules in the plasma membrane. Which type of molecule is…

A: Plasma membrane is a phospholipid bilayer. It acts as a barrier between the interior and the…

Q: Interpret the effect of hyperkalemia with reference to Goldman’s equation. a) What happens to rate…

A: Introduction  Hyperkalemia refers to a condition in which there is an elevated level of potassium…

Q: What type of transport is illustrated by the protein that simultaneously pump H+ and surcose across…

A: Diffusion is the movement of molecules from the region of higher concentration to lower…

Q: Discuss carrier-mediated transport. How could you experimentally distinguish between the different…

A: Carrier mediated transport: It is an energy dependent pathway which is generally used by small…

Q: Why would the Na+–K+ pump, but not osmosis, cease to function after a cell dies?

A: The cell membranes possess the property of selective permeability that permits the entry and exit of…

Q: In primary/direct active transport, does ATP always have to be involved? Definitions seem to say the…

A: Chemical processes that liberate energy in the form of heat are known as exergonic reactions. When…

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.