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Things can be transported out of cells in multiple ways. The first being diffsion, a type of passive transport (which means it doesn't use energy). In diffsion, molecules move from areas of high concentration to areas of low concentration. If there is a higher concentration inside the cell than outside the cell then you're set. The second way is active transport. Unlike diffusion, active transport uses energy (hence the name 'active transprt'). In the process of active transport molecules move from areas of low concentration to areas of higher concentration. The third and final way is through exocytosis. Exocytosis is used when the material to be released is too big to fit in the cell's channels (passageways in and out of the cell). In exocytosis the material, inside a vacuole, moves to the cell membrane. The cell membrane then fuses with the outer layer vacuole, releasing the material.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoActive transport allows molecules to be moved into or out of the cell when it's either not possible via osmosis due to the balance of chemicals being in the wrong direction or the molecules being too big to pass normally through the cell wall. This active transport requires transport proteins, and use of energy.
Wiki User
∙ 14y agoReally depends... diffusion, ligand gated channels, voltage gated channels, receptors, pumps, confirmational changes. Lots of ways depending on what you need to have enter...
Wiki User
∙ 14y agoits transferred by the nucleus
Wiki User
∙ 12y agoribosomes
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Some materials can move across the cell membrane against a concentration gradient by?
Large molecules such as glucose that cannot cross the phospholipid bilayer can still move across the membrane through transport proteins by active transport. Active transport uses energy to move molecules the bilayer.
When are endo and excytosis used in a cell?
Endocytosis (into the cell) and exocytosis (out of the cell) are used to transport molecules that are too large to get through the cell membrane otherwise.
Why is active transport of molecules necessary?
To move substances from low to high concentration.
What type of transport is it when gluclose molecules move into a cell?
passive. any transport that is diffusion to get into a cell is passive.
What is the process in which a cell surrounds and takes in a substance?
Endocytosis; bulk transport into the cell.
What are proteins found in cell membranes that transport large molecules?
carrier molecules
Why do cell need transport proteins to functions?
Some molecules are too large to pass through the cell membrane without transport proteins.
How do most molecules cross the cell membrane?
Diffusion or if the molecules are too large they go through the transport proteins.
Some materials can move across the cell membrane against a concentration gradient by?
Large molecules such as glucose that cannot cross the phospholipid bilayer can still move across the membrane through transport proteins by active transport. Active transport uses energy to move molecules the bilayer.
When are endo and excytosis used in a cell?
Endocytosis (into the cell) and exocytosis (out of the cell) are used to transport molecules that are too large to get through the cell membrane otherwise.
Why is active transport of molecules necessary?
To move substances from low to high concentration.
What do transport dos?
Transport proteins help move (or "transport") large molecules that aren't able to pass through a cell's membrane, through said cell membrane through means of diffusion.
What type of transport is it when gluclose molecules move into a cell?
passive. any transport that is diffusion to get into a cell is passive.
Large molecules are surrounded by the cell membrane and enter the cell?
A large molecule that can not enter the cell through myosis enters the cell through by endocytosis. Endocytosis is an example of active transport.
Why do cells to use transport proteins to function?
Some molecules are too large to pass through the cell membrane without transport proteins.
Why do cells need to use transport proteins to function's?
Some molecules are too large to pass through the cell membrane without transport proteins.
Why do cells need to use transport proteins to function-?
Some molecules are too large to pass through the cell membrane without transport proteins.
