Cell Structure and Function
Why might a mutation affecting the amino acid sequence near the active site of a carrier protein impede its function in facilitated diffusion?
Considering that facilitated diffusion relies on integral membrane proteins for function, which cellular condition could potentially impair this process?
During facilitated diffusion, how does a steep concentration gradient for ion X affect its movement through a channel protein compared to ion Y that has a mild concentration gradient but moves through a carrier protein?
Given that a specific facilitated diffusion channel has a higher affinity for potassium (K+) ions over sodium (Na+) ions, what would be the predicted outcome if the concentration of Na+ significantly increased inside the cell?
Why would cell membranes containing a greater number of aquaporin proteins exhibit faster rates of facilitated diffusion for water?
Which of the following molecular features is crucial for the function of channel proteins involved in facilitated diffusion?
Which of the following molecules can be transported across the cell membrane by facilitated diffusion?
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If a cell's aquaporins became nonfunctional due to genetic mutations, how would this primarily affect the cell's osmoregulation during facilitated diffusion?
What type of channel protein allows ions to flow directly across the membrane?
Which of the following is an example of a carrier protein used in facilitated diffusion?