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No. Only non-polar, small molecules can pass through a membrane by simple diffusion. A sucrose molecule is too large a molecule to pass through a membrane by simple diffusion, however, it can pass through a plasma membrane (but not any artificial membranes like Visking tubings) by facilitated diffusion, i.e. through transport proteins(specific carriers for sucrose) embedded in the membranes.
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What substance will diffuse through a membrane?
The three substances that can diffuse through a cell membrane are CO2, O2, AND H2O.
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.
Can oxygen diffuse across a cell membrane?
Yes, how else would our cells obtain oxygen?
What is the process by which molecules of sugar pass through an animal cell membrane to replenish the cell's lack of sugar is?
diffusion
Are solutes always able to diffuse through a cell's selective permeable membrane?
No, cell membranes are semi-permeable, meaning they allow some solutes to pass through - but not others.
Why do sugar molecules not diffuse through a plant cell membrane?
The membrane is semi-permeable. Sugar molecules are too large to diffuse through.
What substance will diffuse through a membrane?
The three substances that can diffuse through a cell membrane are CO2, O2, AND H2O.
What will not diffuse through the cell membrane?
Glucose
How can water go through the cell membrane when it is polar?
Because it is a small molecule, water can diffuse through the cell membrane.
What is it called when sugar passes through an animal cell?
glucose (sugar) can diffuse through cell membranes
How do protist get rid of wastes?
by allowing them to diffuse through the cell membrane
How do materials get into and out of the cell?
Through proteins in the membrane.
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.
Can all molecules diffuse through all cell membranes?
No, there are specific cell membranes that allow only certain molecules to pass through. Some stay open and others must be opened ( like a gate ).
What is the process of taking material into a cell?
There are a huge number of ways that this can occur. Water can simply diffuse through the cell membrane through osmosis, while other substances diffuse through special channels in the cell membrane. Some substances have to be brought into the cell through active transport, which requires the use of ATP.
What particles could diffuse easily through a cell membrane sodium and oxygen?
Oxygen (O2)
How do protists eliminate waste?
Protists eliminate wastes by allowing them to diffuse through the cell membrane.
