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How could you prove or disprove that a specific solute was able to diffuse through w semipermeable membrane?
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What kinds of molecules freely diffuse across a semipermeable membrane?
Water molecules freely diffuse across a semipermeable membrane.
Where do ions diffuse across membrane to specific ion channels?
down their electrochemical gradients.
What substance is most likely to passively diffuse across the plasma membrane by dissolving in the membrane?
Lipid-soluble molecules such as O2 and CO2 diffuse freely through the plasma membrane.
Why do sugar molecules not diffuse through a plant cell membrane?
The membrane is semi-permeable. Sugar molecules are too large to diffuse through.
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 kinds of molecules freely diffuse across a semipermeable membrane?
Water molecules freely diffuse across a semipermeable membrane.
Can Iodine Potassium Iodine when mixed with a starch diffuse through a semipermeable membrane?
yes
The statement below refers to a structure of the cell oxygen diffuse through this structure but sodium ion may need active transport which structure is this statement most likely referring to?
a semipermeable membrane
What structure does oxygen diffuse through that a sodium ion may need active transport?
A semipermeable membrane
What is diffusion and how does it relate to plasma membrane?
Diffusion is simply the movement of one molecule from an area of high concentration to low concentration. It is semi related to the plasma membrane because plasma membrane does allow diffusion, to an extent. Plasma membrane is semipermeable and only allows certain things to diffuse in or diffuse out.
Where do ions diffuse across membrane to specific ion channels?
down their electrochemical gradients.
Which substances did not diffuse the membrane?
starch doesnt diffuse through the dialysis membrane.
Is it true that once equilibrium is reached roughly equal numbers of molecules move in either direction across a semipermeable membrane?
Yes, when equilibrium is reached, solute particles continue to diffuse across the membrane in both directions. Cells are always moving.
What substance will diffuse through a membrane?
The three substances that can diffuse through a cell membrane are CO2, O2, AND H2O.
The diffusion of water across a semipermeable membrane is called?
When water diffuses through a semipermeable membrane, such as a cell, it is called osmosis. In osmosis the concentration of water will differ on one side of the membrane from that of the other side. Water molecules will tend to diffuse from the high concentration side to the lower.
How do you use diffuse in sentence?
Oxygen molecules diffuse across the membrane.
Which is a factor that determies whether a mole can cross a cell membrane?
Lipid solubility determines if it will diffuse across. The presence of specific protein carrier molecules determines if it will be transported across the membrane.
