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What are the special in the cell membrane that allow materials such as water and sugar to pass touch made of?
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What are the special structures in the membrane that allow materials as water and sugar to pass through made of?
Membrane transporter.
What are the special in cell membrane that allow materials such as water and sugar to pass through made of?
proteins
What are special structures in the cell membrane that allow materials such as water and sugar pass through made of?
PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!
What are the special structures in the cell membrane that allow materials such as water and sugar to pass through made o?
membrane proteins act as carriers or channels for the specific movement of various substances in to and out of the cells.
What are the special structures in the cell membrane that allow materials such as water and sugar through made of?
PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!
What are the special structures in the cell membrane that allows materials such as water and sugar to pass made of?
proteins
What are the special structures in the cell membrane that allow such as water and sugar to pass through made of?
PROTEIN!!!!!!!!!!!!!!!!!!!!!!!!!
What are the special structures in the cell membrane that allow water and sugar pass through it made of?
These special structures are called protein gates or protein channels. Water is able to diffuse through the cell membrane since it is a small molecule. However, there are channels called aquaporins that allow water to enter the cell. A glucose molecule cannot just diffuse into a cell. There are glucose channels on the surface of the cell membrane that bind glucose molecules and allow them to enter the cell.
Will a semipermeable membrane allow only water through and not any sugar disovled in water?
Yes.
What are the special structures in the cell membrane that allows such as water and sugar to pass through made of?
proteins
Will a semipermable membrane allow only water through and not any sugar disovled in water?
Yes, that is correct.
What is the diffusion of water molecule through a selectively permeable membrane?
It's called osmosis. A selectively permeable membrane will only allow certain molecules to pass trough. To illustrate: If you have a high concentration of sugar molecules on one side of the membrane, no sugar on the other side, and the sugar molecules are too big to pass trough the membrane. If this is the case, then water molecules will diffuse over to the side of the membrane with a high sugar concentration. This happens because the molecules try to distribute themselves evenly in the solution. The water molecules move because the sugar molecules can't.
