[Molecules pass through the cell membrane] through a process known as osmosis.
-------------------------------------------------------
Yes, osmosis is a great part of diffusion of molecules, but another important factor to consider is the presence of protein channels in the membrane. The cell membrane is actually a lipid bilayer, in which proteins are embedded. Normally, molecules will simply be diffused through these chanells, but in some cases, the protein must be modified in order to allow the molecules to flow. This is called active transport, which requires energy in order to change the shape of the protein and allow the foreign molecule to pass.
Diffusion is a physical process. When it is performed through a selectively permeable membrane, it is called osmosis. Thus osmosis is an appropriate word for movement of water molecules through a selectively permeable membrane and not diffusion.
Only the water can enter into the bag and leave the bag, the tea leaves can not leave the bag.
means that the cell membrane has some control over what can cross it, so that only certain molecules either enter or leave the cell
No they pass through the cell membrane. The cell membrane is selectively permeable to ions and organic molecules
The movement of water through a selectively permeable membrane is called diffusion. Water will always diffuse down a concentration gradient, from high solute concentration to low solute concentration.
The cell membrane is selectively permeable, allowing some molecules to pass through by osmosis
The selectively permeable phospholipid bilayer (a.k.a plasma membrane) is 'selectively permeable' because it selects which molecules it allows to permeate (pass through).
A selectively permeable membrane.
The membrane is said to be selectively permeable or semipermeable when some molecules can pass through it faster than others. This property allows the membrane to regulate the passage of specific substances.
Diffusion is a physical process. When it is performed through a selectively permeable membrane, it is called osmosis. Thus osmosis is an appropriate word for movement of water molecules through a selectively permeable membrane and not diffusion.
Selectively permeable describes a cell membrane that allows certain ions or molecules to pass through it by means of passive or active transport.
A membrane that lets some substances pass through but not others is known as a semipermeable membrane. Other terms that describe this type of membrane are: selectively permeable, partially permeable, or differentially permeable.
semipermeable or selectively permeable.
Selectively permeable means that only certain substances are able pass through the cell membrane.A selectively permeable membrane is a membrane that only can be permeated by selective things, in other words a surface that lets some molecules in but not others. Like a cell membrane will let water diffuse into it :)
Only the water can enter into the bag and leave the bag, the tea leaves can not leave the bag.
means that the cell membrane has some control over what can cross it, so that only certain molecules either enter or leave the cell
The cell membrane is selectively permeable, allowing only certain molecules to pass through based on size, charge, and other factors. Conversely, the nuclear envelope is fully permeable to molecules of certain sizes.