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molecule size
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Which factor prevented the protein molecules from moving out of the cell?
The presence of the cell membrane acts as a physical barrier that prevents protein molecules from moving out of the cell. The cell membrane is selectively permeable, controlling the movement of substances in and out of the cell. Additionally, certain proteins within the cell membrane help to regulate the transport of molecules.
A cell membrane is a very specific about what it allows across. how does this help the cell?
The cell works better…
What is a factor that determines whether molecules can cross a cell membranes?
mass
What is a factor that determines whether a molecules can cross a cell membrane?
mass
Which organelle is responsible for moving molecules from one part of the cell to the other?
lkSDJC≈
What causes diffusion in the cell?
Diffusion is caused when molecules are moving around and bumping each other in the cell. Collisions cause the molecules to them push apart from one another. Eventually the molecules continue to do this and they spread throughout the area.
Why will water-soluble molecules have a hard time moving through the lipid bilayer of a cell?
false
Why molecules move into and out of cells?
Molecules move in and out of the cell by difffusion process and only those molecules which have size smaller then pore size of plasma membrane can move in and out of the cell. The second factor is ionic conc or is also known as conc gradient according to which molecules of required ionic status can move in and out of the cell
Phospholipids moving freely and allowing water and other hydrophobic molecules to pass through int or out of the cell is known as what?
Phospholipids moving freely and allowing water and other hydrophobic molecules to pass through into or out of the cell is known as fluid mosaic model. This model describes the structure of the cell membrane as a fluid lipid bilayer with embedded proteins that can move laterally to allow for the passage of molecules.
State one factor that influences which molecules can pass through the cell membrane?
Responses include, but are not limited to:molecule size; concentration of molecules; pore size; carrier proteins; molecule charge/shape.
Does molecules have cell?
No, molecules do not have cell, rather a cell have molecules in it.
As the concentration of molecules outside a cell increases more molecules will enter the cell?
Yes, this process is known as osmosis. Water moves from an area of low solute concentration (outside the cell) to an area of high solute concentration (inside the cell) to balance the concentration levels. This causes more molecules to enter the cell as the concentration difference increases.
