Uniporters and ion channels support facilitated transport across cellular membranes. Although both are examples of facilitated transport, the rates of ion movement via an ion channel are roughly 104 - to 105 -fold faster than the rates of molecule movement via a uniporter. What key mechanisticdifference results in this large difference in transport rate?What contribution to free energy (ΔG) determines the direction of transport?

Q: Nhat type of system is this? O Steady State Diffusionn, no reaction Unsteady State Diffusion O…

A: Answer: SALT CONCENTRATION: A  solution carries a amount of salt is called hypertonic solution where…

Q: Why is bulk transport important to cells? Among the three types bulk transport of molecules which do…

A: Bulk transport is defined as the controlled movement of large molecules, macromolecules, or…

Q: Describe the effect of a blocker of cellular ATP production (e.g. anoxia plus sodium fluoride) on…

A: Considering the case as mentioned i.e. anoxia which refers to the oxygen Deficiency in cell. Here…

Q: What is the energy requirement to transport 3 mol of Na+ across the membrane by the Nat-K+ ATPase…

A: As we see in the above question that the ion concentration difference of K+ from out side to inside…

Q: The phosphate transport system in bacteria imports phosphate into the cell even when the…

A: In the small intestine, phosphate is absorbed via at least two separate mechanisms: paracellular…

Q: What is the free energy change for the transport of calcium ions (Ca++) across a membrane from a…

A: Ions are distributed on either side of the cell membrane. The transport of ions across the membrane…

Q: Understanding membranes: a) Describe the factors that influence fatty acid melting temperatures…

A: The fluidity of membrane depends on the fatty acids present in it. Fatty acids form an integral part…

Q: Here's one experimental approach to finding out how rapidly a membrane transporter can move its…

A: Glycolysis is the first step of cellular respiration in both prokaryotes and eukaryotes and involves…

Q: The following are true statements regarding passive facilitated transport EXCEPT     The process…

A: Diffusion is a defined biological process by which molecules transport through organs. Diffusion is…

Q: Describe in details the processes of active transport, including the concepts of pumps, primary…

A: The passage of ions and molecules through the cell membrane from a lower concentration to a higher…

Q: Each answer can be used more than once, or not at all. - Simple Diffusion - Facilitated diffusion…

A: Introduction Diffusion is a process which involves the movement of molecules from a high…

Q: Identify what type of mortality indicator is depicted in the following graph. a. Age-specific…

A: Introduction Mortality  is calculated death per 100,000 person, fatality is calculated death per 100…

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: What is the energy requirement to transport 2 mol of K+ across the membrane by the Nat-K+ ATPase…

A: We need to find how much energy is required to move 2 mol of K+ across the membrane from outside to…

Q: Lucy is studying isoleucine transport by a neutral amino acid uniporter in her cell type of…

A: The isoleucine uniporter appears to have reached saturation, or maximum transport capacity, based on…

Q: The data below were collected during a passive membrane transport experiment where two solutes (A…

A: Membrane transport is the cellular process by which the passage of solutes (ions and small…

Q: Number of glucose carrier proteins in membrane Glucose diffusion rate (mM/sec) 300 0.0015 500…

A: INTRODUCTION Glucose carrier protein It is a facultative transport protein involved in glucose…

Q: Phospholipid lateral motion in membranes is characterized by a diffusion coefficient of about 1 x…

A: The objective of the question is to calculate the distance traveled by a phospholipid in a bilayer…

Q: A cell with a K+1 concentration of 0.3 eq/L, and a Na+1 concentration of 0.1 mol/L is placed into a…

A: The transport of molecules and ions across a cell membrane is an essential process for the cell to…

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: Are symporters and antiporters always involved in active transport? Can't both solutes move in the…

A: The cell uses active transport, that takes energy derived from ATP, to move molecules against the…

Q: One thousand Ca2+ channels open in the plasma membrane of a cell that is 1000 μm3 in size and has a…

A: The passage of ions through the cell membrane takes place depending on the concentration of the ion…

Q: spherical, single-celled organism which needs oxygen to survive. a. Assume oxygen needs to diffuse…

A: The time that the thermal neutron spends diffusing through the reactor materials before it is…

Q: shown below, which of the following would likely happen if the glucose facilitated diffusion…

A: Glucose concentration would be higher in the lumen of the organ and lower in the cytosol of the…

Q: What are the distinctions between facilitated difussion, primary active transport and secondary…

A: Every organism has a cell membrane that controls the transport of substances in and out of the cell.…

Q: According to the “Hawaiian Punch” principle, different compartments of the secretory and endocytic…

A: "Hawaiian Punch" principles states that various compartments of endocytic and secretory pathways are…

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.