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Why are osmotically drive membrane processes (ODMPs) not been practically installed? What is the main theory to explain this?
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- What forces drive solutes from one side of the membrane to the other?• What solute properties dictate its permeability?– Why can some solutes passively diffuse through the plasma membrane, and some cannot?What is the primary difference between passive and active transport in terms of concentration gradients?Are symporters and antiporters always involved in active transport? Can't both solutes move in the same direction and be moving down their concentration gradient (and the same with antiporters)?
- why is the molecular machinery for membrane fusion is important for any cell that utilizes vesicular transportFor each type of membrane transport, know the following:– Is a transporter protein required? If so, what type?– Is there an energy requirement, and if so, what is the energy source?– What is the relative rate of solute transport based on molecule type? On concentration gradient?– What are examples of the types of solutes transported by carriers and channels?Provide 2 examples of Diffusion, Osmosis, and Semi-Permeable Membrane (1 from the "Diffusion Through a Membrane" lab and 1 from any biological situation) and explain how those examples illustrates the concept.
- Which of the following membrane transport mechanism requires both the aid of proteins and the expenditure of cellular energy?how can osmosis be applied to the physiological principle of a controlled exchange of materials occurs between compartments and across cellular membranes?Solution A is hyperosmotic to solution B. If solution A is separatedfrom solution B by a selectively permeable membrane, does watermove from solution A into solution B, or vice versa? Explain
- A migrating fish would be rapidly transferring substances across cell membranes. These substances would include sodium, water, carbon dioxide, oxygen, and steroids. Which of those would be most likely to be moved via active transport? Why? What is a transmembrane gradient? What is an electrochemical gradient?What Osmotic conditions would be favored by Plant and Animal cells? Why? Explain what is meant by the Fluid Mosaic Model of Membrane Structure. What are the various functions of membrane proteins? Explain the different forms of membrane transport: Passive, Facilitated, Active. Describe the bulk transport mechanisms of Endocytosis and Exocytosis.What will happen to the cell volume and solute concentratuon if a cell that is normally in osmotic equilibrium was transferred to a more diluted concentration?