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Diffuses when water is needed inside of the cell. It usually happens by a hyper-tonic or hypo-tonic solution. Wherever there is a high and low.. water diffuses. Water usually diffuses high to low.
Water or any substance that has the ability to diffuse always diffuses from a high concentration to a low concentration. Through a cell memrane, it's the same thing. When we drink water, we gulp down a whole mouthfull. When it's time for it to diffuse, it goes into different cells. We drink in a high c. and the water goes in the cells in low concentration. Same thing when the water wants to come out. It goes to another place that needs it.
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∙ 10y ago
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What kinds of molecules freely diffuse across a semipermeable membrane?
Water molecules freely diffuse across a semipermeable membrane.
If a substance is able to diffuse across a membrane then the membrane is said to be what?
selectively permeable
If a substance is unable to diffuse across a membrane we say the membrane is?
osmotically active
What can diffuse directly across the plasma membrane of a eukaryote cell?
Most small non polar molecules can diffuse across the membrane. Water is polar but diffuses across the cell through aquaporins. There are also proteins that actively transport substances across the cell membrane such as ions (ex.The Na/K pump). It can get a little confusing. I tried to be as simple as possible. I don't know if this is what you were looking for.
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.
What kinds of molecules freely diffuse across a semipermeable membrane?
Water molecules freely diffuse across a semipermeable membrane.
How plasma membrane diffuse across plasma membrane?
Ions can't diffuse across membranes, they must used channels to transport across
Can oxygen diffuse across a cell membrane?
Yes, how else would our cells obtain oxygen?
How do you use diffuse in sentence?
Oxygen molecules diffuse across the membrane.
What is the membrane said to be if a substance is able to diffuse across a membrane?
selectively permeable
If a substance is able to diffuse across a membrane then the membrane is said to be what?
selectively permeable
Gases diffuse most efficiently across a respiratory membrane if the membrane is?
Thick and moist
If a substance is unable to diffuse across a membrane we say the membrane is?
osmotically active
What are 2 substances that diffuse freely across a cell membrane?
CO2, H2O, and O2 can all diffuse across a cell membrane. Also, small polar molecules (uncharged) and hydrocarbons easily diffuse across.
Molecules that can diffuse across the membrane?
This depends entirely on the membrane permeability.
What type of molecule can diffuse across a membrane by squeezing between the phospholipids?
Many gasses, water and lipids to name a few.
What can diffuse directly across the plasma membrane of a eukaryote cell?
Most small non polar molecules can diffuse across the membrane. Water is polar but diffuses across the cell through aquaporins. There are also proteins that actively transport substances across the cell membrane such as ions (ex.The Na/K pump). It can get a little confusing. I tried to be as simple as possible. I don't know if this is what you were looking for.
