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What is the process called when molecules must join with another molecule such as a protein to get through a membrane?
Wiki User
∙ 11y ago
facilitated diffusion
Wiki User
∙ 11y ago
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How do other molecules pass through the selectively permeable cell membrane?
[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.
How do cells transport molecules across a cell membrane?
Molecules can move through the membrane in many ways. If the molecule is hydrophobic (or lipophilic) it can easily pass through the membrane. Other than that, most molecules move through the membrane through channels (which flow towards the molecules concentration gradient) or pumps (which flow against a molecules concentration gradient using energy).
Which requires the use of energy to move a molecule across a cell membrane?
No. Water molecules can osmotically cross the cell membrane because they are small enough that their polarity does not matter. Then there are porins. Channels across the cell membrane that water molecules use.
What is the process When proteins help molecules move across the membrane is called?
when proteins help molecules move across the membrane, it it called Facilitated Diffusion
How do really big molecules get out of the cell?
Really big molecules, such as proteins or DNA, can exit the cell through a process called exocytosis. In exocytosis, the large molecule is packaged into a vesicle within the cell and then fuses with the cell membrane, releasing the molecule outside the cell. This is an active process that requires energy.
What is additional reaction?
An addition reaction is when 1 molecule combines with another molecule and becomes 1 bigger molecule. There are no other products in this process; just the 2 molecules.
What is a addition reaction?
An addition reaction is when 1 molecule combines with another molecule and becomes 1 bigger molecule. There are no other products in this process; just the 2 molecules.
How do other molecules pass through the selectively permeable cell membrane?
[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.
What molecule can be formed with atoms removed from the two glucose molecules?
Water (H2O) molecules, one on either side of the molecule.
How do cells transport molecules across a cell membrane?
Molecules can move through the membrane in many ways. If the molecule is hydrophobic (or lipophilic) it can easily pass through the membrane. Other than that, most molecules move through the membrane through channels (which flow towards the molecules concentration gradient) or pumps (which flow against a molecules concentration gradient using energy).
How does endocytosis differ from the process shown in transparency?
Endocytosis is a process which allows a cell to engulf molecules in their entirety and surround those molecules in a membrane. Transport is when small molecules can actively transport through a cellular membrane and come out again.
What molecules serve as intermediate electron carriers in the process of cellular respiration?
They can accept electrons and transfer mos of their energy to another Molecule.
Which requires the use of energy to move a molecule across a cell membrane?
No. Water molecules can osmotically cross the cell membrane because they are small enough that their polarity does not matter. Then there are porins. Channels across the cell membrane that water molecules use.
What is the process When proteins help molecules move across the membrane is called?
when proteins help molecules move across the membrane, it it called Facilitated Diffusion
What process do water molecules cross the cell membrane?
Process in which water molecules moves across a membrane?
How do larger molecules move across epithelial membranes in the capillaries?
Large molecules are transported across a cell membrane by the process of process of exocytosis. This is when secretory vesicles secretes large molecules by the fusion of vesicles with the plasma membrane.
How do really big molecules get out of the cell?
Really big molecules, such as proteins or DNA, can exit the cell through a process called exocytosis. In exocytosis, the large molecule is packaged into a vesicle within the cell and then fuses with the cell membrane, releasing the molecule outside the cell. This is an active process that requires energy.
