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No, osmosis is a special type of diffusion in which a water molecule is able to passively transport through a membrane without a protein. Although it is polar, it's extremely small size makes this possible
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What process requires membrane proteins but not energy?
Osmosis is the membrane activity that does not require the expenditure of energy by the cell. It does not require any input of energy.
The part of the cell that regulates what can enter and leave?
The cell membrane determines what comes in and what goes out. Water goes in and out by osmosis which is a passive method. Others require the help of proteins that act as doorways. These require energy and the method is called active transportation.
Which form of transport across the cell membrane does not require energy but a carrier protein?
Facilitated transport.
What are the protein molecules in a cell membrane that assist in cell transport?
Protein molecules are responsible for membrane transport. In passive transport diffusion is the phenomenon in which molecules flow naturally from areas of high concentration to lower concentrations.
Do channel proteins provide a continuous path across the membrane?
Yes, only channel proteins provide a continuous path across the plasma membrane. Carrier proteins do not provide a continuous path but do require conformational changes in order to transport solutes across the membrane.
What process requires membrane proteins but not energy?
Osmosis is the membrane activity that does not require the expenditure of energy by the cell. It does not require any input of energy.
Why does osmosis require a semipermeable membrane while diffusion does not?
yes
Diffusion of solvent particles across a semipermeable membrane?
Osmosis is the diffusion of water through a semi-permeable membrane, such as that surrounding a cell. Semipermeable indicates that the membrane will allow certain thing to pass through it while preventing others.
Is osmosis a movement of proteins?
No, in osmosis water molecules move from higher water concentration to a lower concentration through a semi-permeable membrane. Proteins are much smaller matter.
What does osmosis require?
Osmosis is the movement of particles from a high concentration to a low concentration accross a partially permeable membrane.
Does diffusion require integral proteins in the cell membrane?
no
Does osmosis or facilitated diffusion require the presence of membrane channels?
facilitated diffusion
The part of the cell that regulates what can enter and leave?
The cell membrane determines what comes in and what goes out. Water goes in and out by osmosis which is a passive method. Others require the help of proteins that act as doorways. These require energy and the method is called active transportation.
Does facilitated diffusion require the use of special membrane proteins?
no
What process does not require energy to move a substance across a membrane?
Osmosis because it is the equalization of pressure.
Movement across the cell membrane made possible by a protein embedded in the cell membrane?
It is a selectively permeable membrane that allows certain substances in and out, but keeps harmful substances from entering the cell. It could be compared to the security guard at the door of an airport that makes sure that nobody dangerous gets in or out.
Does osmosis require a carrier?
NO. Osmosis( by definition) is the DIFFUSION of water from a high concentration gradient to a low concentration gradient across a semipermeable membrane. As diffusion is a form of passive transport, it doesnt require a carrier
