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Diffusion is the movement of molecules or ions from high concentrated medium to low concentrated medium due to the continuous free movement of molecules, simply it's like spraying some perfume , air diffusion makes perfume molecules to move so that you can smell it every where in the room..
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∙ 12y ago
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Describe how glucose molecules enter a cell by facilitated diffusion?
protein
How do Lipid-soluble molecules and gases enter the cell?
diffusion through the lipid bilayer.
Which substance may enter a cell membrane by simple diffusion?
Water, certain ions, air and glucose molecules.
What is the role of diffusion within a cell?
Diffusion is an intermingling of molecules, ions, etc., resulting from random thermal agitation, as in the dispersion of a vapor in air. When there is a higher concentration of oxygen molecules outside the cell than inside the cell, diffusion takes place by causing the concentration of oxygen molecules to be the same outside and inside the cell.
How do the small molecules of oxygen and carbon dioxide move through the cell membrane?
They move via diffusion across a gradient.
What role did diffusion play in the changes you observed?
Before diffusion there is a higher concentration of oxygen molecules outside the cell than inside the cell. After diffusion the concentration of oxygen molecules is the same outside and inside the cell.
Describe how glucose molecules enter a cell by facilitated diffusion?
protein
What is cell diffusion?
One way that substances enter a cell is through diffusion. Diffusion is the process by which molecules spread from areas of high concentration to areas of low concentration. When the molecules are even throughout a space it is called equilibrium.
How oxygen enters the cells?
Oxygen is able to go into a cell by diffusion. The oxygen molecules are small enough to go through the cell membrane with that process.
How do Lipid-soluble molecules and gases enter the cell?
diffusion through the lipid bilayer.
Which substance may enter a cell membrane by simple diffusion?
Water, certain ions, air and glucose molecules.
How do large polar molecules enter the cell?
The polar molecules goes through facillated diffusion. The molecules goes through the channel or membrane protein which then goes inside the cell.
How does Oxygen cross cell membrane?
Oxygen and water molecules can penetrate the cell membrane due to small gaps that are created by the lipid molecules. Lipid molecules overlap each other which makes the gaps. The oxygen and water molecules then enter in the gaps. The cell membrane in this case is semi permeable.
What process does a cell with a low concentration of oxygen will likely gain oxygen molecules from an area with a higher oxygen concentration have to go through?
Diffusion.
What is the role of diffusion within a cell?
Diffusion is an intermingling of molecules, ions, etc., resulting from random thermal agitation, as in the dispersion of a vapor in air. When there is a higher concentration of oxygen molecules outside the cell than inside the cell, diffusion takes place by causing the concentration of oxygen molecules to be the same outside and inside the cell.
How do the small molecules of oxygen and carbon dioxide move through the cell membrane?
They move via diffusion across a gradient.
How many oxygen molecules need to enter or exit the cell to achive equilibrium?
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