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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..
What else can I help you with?
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 are the Four ways materials can enter a cell?
Materials can enter a cell through passive diffusion, facilitated diffusion, active transport, and endocytosis. In passive diffusion, molecules move across the cell membrane from an area of high concentration to low concentration. Facilitated diffusion involves the use of transport proteins to help molecules cross the membrane. Active transport requires energy to move molecules against their concentration gradient. Endocytosis involves engulfing molecules by the cell membrane and bringing them into the cell.
What selects which molecules enter the cell?
The cell membrane selectively allows molecules to enter the cell through various processes such as passive diffusion, active transport, and facilitated diffusion. Selective permeability is maintained by membrane proteins that act as channels, carriers, or pumps to regulate the passage of specific molecules based on size, charge, and concentration gradients.
Does oxygen enter a cell by diffusion or osmosis?
Oxygen enters a cell by diffusion, which is the movement of molecules from an area of higher concentration to an area of lower concentration. Osmosis, on the other hand, is the movement of water molecules across a selectively permeable membrane.
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
Diffusion in cells?
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. In cells, diffusion plays a key role in transporting substances like oxygen, carbon dioxide, and nutrients across cell membranes. This process helps maintain cellular function by ensuring a balance of molecules inside and outside the cell.
How do Lipid-soluble molecules and gases enter the cell?
diffusion through the lipid bilayer.
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.
Which substance may enter a cell membrane by simple diffusion?
Water, certain ions, air and glucose molecules.
What are the Four ways materials can enter a cell?
Materials can enter a cell through passive diffusion, facilitated diffusion, active transport, and endocytosis. In passive diffusion, molecules move across the cell membrane from an area of high concentration to low concentration. Facilitated diffusion involves the use of transport proteins to help molecules cross the membrane. Active transport requires energy to move molecules against their concentration gradient. Endocytosis involves engulfing molecules by the cell membrane and bringing them into the cell.
What substance cannot be moved into a cell by osmosis or diffusion?
Large molecules such as proteins cannot be moved into a cell by osmosis or diffusion due to their size and charge. These molecules require specialized transport mechanisms such as active transport to enter the cell.
What selects which molecules enter the cell?
The cell membrane selectively allows molecules to enter the cell through various processes such as passive diffusion, active transport, and facilitated diffusion. Selective permeability is maintained by membrane proteins that act as channels, carriers, or pumps to regulate the passage of specific molecules based on size, charge, and concentration gradients.
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 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.
