A large cell will never move across an intact cell membrane.
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
adh
Yes, how else could the cell live. Cell membranes have structures (holes) in them to allow things to move in and out. These holes are special structures in the membrane and they "control" what goes across the membrane. I have made a link below to a diagram of the cell membrane to show some of these structures.
Carrier proteins are a type of molecule that can be used as a tunnel to move compounds across the cell membrane. These proteins bind to specific molecules and undergo conformational changes to transport them across the membrane. This process is known as facilitated diffusion.
A large cell will never move across an intact cell membrane.
Move things across the cell membrane.
Small particles move faster across the membrane.
A carrier protein helps transport molecules across a cell membrane by binding to specific molecules and changing shape to move them across the membrane.
waste and nutrients
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
no
There cannot be large cells inside a cell.
Cheese toast
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
adh
ginger kids