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Ions can't diffuse across membranes, they must used channels to transport across
Helen O'Kon
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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 is a transport process by which gases move through a membrane?
Simple Diffusion
What type of channel does sodium and potassium use to diffuse across the plasma membrane of all cells?
voltage type of channel
What does not freely diffuse through the plasma membrane?
glucose
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.
What kinds of molecules freely diffuse across a semipermeable membrane?
Water molecules freely diffuse across a semipermeable membrane.
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.
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 made from lipids and diffuse freely into cells through the plasma membrane?
protiens
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
