0
What else can I help you with?
Why are fat soluble molecules the only molecules that permeate across a cell membrane?
Because small non polar molecules are the ones able to cross due to the fact that the membrane consists of a phospholipid bilayer where the middle is composed on non polar tails
Why can molecules that are fat-soluble permeate across a cell membrane?
Cell membranes are composed of a lipid bilayer. Cellular fluid (cytosol) and the cell's organelles are contained by the cell's membrane, which is composed of a lipid bilayer. Lipids are a type of fat. Because a cell's membrane is composed of fat, only fat-soluble molecules are able to dissolve through the membrane into the cytosol.
Molecules that permeate a plasma membrane by facilitated diffusion is what?
Molecules that permeate a plasma membrane by facilitated diffusion are typically larger, polar molecules that cannot pass through the lipid bilayer unassisted. These molecules rely on specific transport proteins embedded within the membrane to facilitate their movement across the membrane down their concentration gradient.
What The permeability of a cell membrane depends on the ability of a molecule to diffuse across that membrane. Usually only molecules that are fat-soluble can permeate a cell membrane because?
Most of the bilayer is hydrophobic; therefore water or water-soluble molecules do not pass through easily. Usually only fat soluble are allowed through.A cell controls what moves through the membrane by means of membrane proteins embedded in the phospholipid bilayer Some membrane proteins have carbohydrates attached to them, forming glycoproteins that act as identification markers.
The permeability of a cell membrane depends on the ability of a molecule to diffuse across that membrane. Usually only molecules that are fat-soluble can permeate a cell membrane because?
Most of the bilayer is hydrophobic; therefore water or water-soluble molecules do not pass through easily. Usually only fat soluble are allowed through.A cell controls what moves through the membrane by means of membrane proteins embedded in the phospholipid bilayer Some membrane proteins have carbohydrates attached to them, forming glycoproteins that act as identification markers.
The permeability of a cell membrane depends on the ability of a molecule to diffuse across that membrane. Usually only molecules that are fat-soluble can permeate a cell membrane because what?
Most of the bilayer is hydrophobic; therefore water or water-soluble molecules do not pass through easily. Usually only fat soluble are allowed through.A cell controls what moves through the membrane by means of membrane proteins embedded in the phospholipid bilayer Some membrane proteins have carbohydrates attached to them, forming glycoproteins that act as identification markers.
What can you conclude about the cell membrane structure if liquid soluble molecules move across the membrane?
It can be concluded that if the liquid soluble molecules move more readily across the membrane then the membrane must be made of lipids. When two parts are made of similar material then they will be more likely to allow other particles like them to pass.
How do water-soluble molecules diffuse through the cell membrane?
Water-soluble molecules diffuse through the cell membrane by passing through protein channels or transporters that are embedded in the membrane. These channels and transporters allow the molecules to move across the membrane, from an area of high concentration to an area of low concentration, without requiring energy.
What role do carrier protein play in facilitated diffusion?
it moves large molecules or molecules that are not soluble in lipids across across the cell membrane. (Pg. 101 in science book...1st para.)
What role do carrier proteins in facilitate diffusion?
it moves large molecules or molecules that are not soluble in lipids across across the cell membrane. (Pg. 101 in science book...1st para.)
What does a carrier protein do in the process of transporting molecules across a cell membrane?
A carrier protein helps transport molecules across a cell membrane by binding to specific molecules and changing shape to move them across the membrane.
What substance is most likely to passively diffuse across the plasma membrane by dissolving in the membrane?
Nonpolar molecules like lipid-soluble substances (e.g., steroid hormones, oxygen, and carbon dioxide) are most likely to passively diffuse across the plasma membrane by dissolving in the lipid bilayer. This type of diffusion does not require a specific transport protein and can occur directly through the phospholipid bilayer due to the molecules' hydrophobic nature.
