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- "Transporters saturate at high concentrations of the transported molecule when all their binding sites are occupied; channels, on the other hand, do not bind the ions they transport and thus the flux of ions through a channel does not saturate." is true or false."Transport by transporters can be either active or passive, whereas transport by channels is always passive" is true or false.the sodium channel exchanger NCX transports sodium into and calcium out of cardiac muscle cells. Describe why this itransporter is classified as secondary active transport?
- Describe the contribution of each of the following to the establishment and maintenance of membrane potential: Part A Na+K+ Pump Passive movement of K+ across the membrane Passive movement of Na+ across the membraneIn your opinion, is it more likely that the neurotransmitter transporter is an active or passive transporter? Justify your answerConduct a research to identify a disease that can be caused by a K+ or Na+ transport channel malfunctioning. What are the physical effect of the disease. Include reference with the answer.
- There are differences in Na+, K+, and Cl- ion concentrations across the membrane. Knowing that ions like to flow down their respective concentration gradients explain how the movement of Cl- and K+ ions can result in membrane hyperpolarization.describe in detail:how the Serotonin transporter works whether it is an active or passive transportera specific type of cell that it can be found in and why it is important in this cell typeconsequences for body function when this transporter type fails (due to a mutation that makes it non-functionalif an object b has a plasma sodium concentration of 135mOsm/L and an intracellular concentration of 4mOsm/L. It also has a plasma concentration of potassium of 20mOsm/L and an intracellular concentration of 200mOsm/L. studies identify that the cells have a permeability to potassium that is 10 times greater than sodium. What is the resting membrane potential
- • What are the ionic differences between the extracellular and intracellular fluids? • Give the theory of the diffusion process.What might determine the value for the maximal flux of a mediated transport?Why "Transporter are not very selective, and allow solutes to enter or leave the cell through channels or carriers composed of proteins" is true"?