Why can only some molecules pass through the cell membrane?
What only lets certain things in and out of the cell?
What is a membrane that only lets certain molecules in while keeping other molecules out?
Why can only small nonpolar molecules cross membrane?
Why can most molecules not pass through the plasma membrane?
When a membrane lets some things in but not others we say it is?
What term means the cell membrane allows certain molecules to pass through the membrane and enter the cell?
When a cell is selective and only allows certain substances to cross it the membrane is said to be <UNK>?
What does it mean for a membrane to be selectively permeable only certain molecules?
What property of the cell membrane allows some molecules to pass easily through but not?
What property of the cell membrane allows some molecules to pass easily through but not at all?
Why selectively permeable is important for the cell membrane?
Why does a cell membrane need to be selectively permeable?
What does it mean to say that the membrane is selectively permeable rather than totally permeable?
Cell membranes only allow some molecules through. This characteristic is why cell membranes are selectively permeable. They are not impermeable (not letting anything pass) nor are they freely permeable (letting everything can pass). This quality allows a cell to control what enters and exits it.