Membrane Transport Challenge
Can this cell maintain homeostasis when the outside solution changes?
Keep the cell near stable volume while protecting ATP and membrane stress.
Selective permeability means a membrane lets some materials cross easily, some through channels, and some only with energy.
Osmosis is water movement across a membrane. It follows water potential, not intention.
Homeostasis is a tradeoff: stable volume, enough ATP, and tolerable membrane stress.
Water moves because it wants to dilute the cell.
Every membrane channel uses ATP directly.
More channels are always better.
Waiting for a run.
A cell is placed in a new solution. Explain how solute gradient and channel availability affect cell volume and ATP demand. Use one run result as evidence and name one model limitation.
Run the model first, then save the evidence.
gradient reasoning and active/passive transport confusion
No run evidence yet.
Wait for the first prediction and run before assigning an intervention.
Transfer: predict what changes if this were a plant cell with a cell wall.Open AP Bio TeacherOS view