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What is a Diffusion is the movement of a substance?
diffusion is the movement of materials into cell membranes when the outside of the cell has a higher density than the inside
What does osmosis have to do with cell membranes?
Osmosis is the water molecules diffusion across the cell membranes. More informations can be find at en.wikipedia.org/wiki/Diffusion
Can large hydrophobic molecules cross cell membranes?
Yes, large hydrophobic molecules can cross cell membranes through passive diffusion.
How can polar molecules pass through cell membranes?
Through facilitated diffusion
What is the term for particles moving through cell membranes?
Diffusion is the general term.
What is diffusion a natural movement of molecules from?
in the normal diffusion the substance move from the area of greater concentration to that of lower concentration. .... but i never know what do we mean be "faciliated" plz specify
What is a protein moves molecules across a membrane?
Facilitated diffusion moves molecules through cell membranes passively.
What organic molecule in cell membranes that permits the diffusion of lipid-soluble materials?
Phospholipids are the organic molecules in cell membranes that permit the diffusion of lipid-soluble materials. They have a hydrophobic tail that repels water and a hydrophilic head that interacts with water, creating a bilayer structure that allows for the passage of lipid-soluble molecules.
When does diffusion occur across a cell membrane?
Diffusion across a cell membrane occurs when concentrations of a substance are higher either inside or outside the cell.
What are the six processes by which materials pass through cell membranes?
endocytosisfacilitated diffusionexocytosissimple diffusionactive transportpassive transport
Osmosis is the diffusion of what substance through a cell membrane?
Water
Which substance can enter a cell by diffusion without have to be digested?
water
