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What is it called when a molecule moves across the membrane without using energy?
Wiki User
∙ 8y ago
It's called passive transport. An example of passive transport is O2 (Oxygen), and CO2 (Carbon Dioxide). They both use a "key" to get into the cell, in this case, the key is the chemical formula of O2. Things without a key require the cell to use energy to use endocytosis and exocytosis.
(At least that's what my 8th grade science teacher told me!)
Wiki User
∙ 12y ago
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Assisted transport of a molecule across the cell membrane without an expenditure of energy is known as?
Any movement of molecules into or out of a cell without the expenditure of energy is called diffusion. If the molecule uses special channels to diffuse through the membrane (again, not expending energy), it is called facilitated diffusion.
What is it called when a molecule uses energy to move across a semiseprable membrane?
active transport
The process where a nonpolar molecule can just passively get across a membrane is called?
facilitated diffusion
What uses a protein to move a molecule across a cell membrane without using energy?
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
What is it called when a cell membrane closes around a molecule to allow the molecule to enter the cell?
selectively permiable membrane (you might want to double check that though...)
What is it called a molecule moves across a membrane through a protein channel without using energy?
Passive Transport
What is it called when a molecule moved across a membrane through a protein channel without using energy?
Passive Transport
What is it called when molecule moves across a membrane through a protein channel without using energy?
Passive Transport
What is it called when a molecule moves across a membrane through a protein channel without using energy '?
Passive Transport
Assisted transport of a molecule across the cell membrane without an expenditure of energy is known as?
Any movement of molecules into or out of a cell without the expenditure of energy is called diffusion. If the molecule uses special channels to diffuse through the membrane (again, not expending energy), it is called facilitated diffusion.
What is it called when a molecule uses energy to move across a semiseprable membrane?
active transport
What is the movement of small molecule across a cell membrane up its concentration gradient called?
eflux
The process where a nonpolar molecule can just passively get across a membrane is called?
facilitated diffusion
What uses a protein to move a molecule across a cell membrane without using energy?
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
When a protein helps a molecule across the membrane is?
the processe is called osmosis Try again, this time use the term "facilitated transport" since a protein molecule is helping.
What is it called when a molecule moves a membrane through a protein channel without using energy?
passive transport
What is it called when a molecule moves arcross a membrane through a protein channel without using energy?
passive transport
