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What used a protein to move a molecule across a cell membrane without energy?
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
What type of molecule can be used as a tunnel to move compounds across the cell membrane?
Carrier proteins are a type of molecule that can be used as a tunnel to move compounds across the cell membrane. These proteins bind to specific molecules and undergo conformational changes to transport them across the membrane. This process is known as facilitated diffusion.
Is diffusive equilibrium possible for the molecule that is impermeable?
No, diffusive equilibrium requires a concentration gradient and the ability of the molecule to pass through a membrane. If a molecule is impermeable, it cannot move freely across the membrane, so diffusive equilibrium is not possible for that molecule.
What requires the use of energy and help of transport proteins to move a molecule across a cell membrane?
Facilitated diffusion
What molecules will move easily across the cell membrane: large proteins, starch, water, or DNA?
Water is the molecule that will move easily across the cell membrane. It can cross the membrane through special channels called aquaporins. Large proteins, starch, and DNA are too large to pass through the membrane without assistance.
How does cell membrane structure work to move molecules across the membrane passively and actively?
Cheese toast
What uses a protein to move a molecule across a membrane without energy?
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
What cell membrane structure allows water-soluble materials to be passively transported to the cytoplasm?
Carrier proteinsProteins in the cell membrane that assist with facilitated diffusion are known as carrier proteins since they carry materials across the membrane. Carrier proteins bind to a molecule on one side of the membrane, change shapes to shield the molecule from the lipid bilayer, and then release the molecule on the other side of the membrane
What used a protein to move a molecule across a cell membrane without energy?
Facilitated diffusion uses proteins to move a molecule across the cell membrane without energy.
What type of molecule can be used as a tunnel to move compounds across the cell membrane?
Carrier proteins are a type of molecule that can be used as a tunnel to move compounds across the cell membrane. These proteins bind to specific molecules and undergo conformational changes to transport them across the membrane. This process is known as facilitated diffusion.
What is it when a molecule uses energy to move across a semipermeable membrane?
active transport
What require the use of energy to move a molecule across a cell membrane?
Active transport
What required the use of energy to move a molecule across a cell membrane?
Active transport
What is it called when a molecule uses energy to move across a semiseprable membrane?
active transport
In osmosis What molecule does not move across the membrane?
In osmosis, large molecules like proteins and polysaccharides do not move across the membrane. Only smaller molecules such as water and ions can pass through the membrane during osmosis.
The use of energy to move substances across a cell membrane describes?
Active transport, which requires energy in the form of ATP to move substances against their concentration gradient across a cell membrane. This process involves specific protein pumps that bind to the molecule being transported, consuming ATP to change conformation and move the molecule across the membrane.
Is diffusive equilibrium possible for the molecule that is impermeable?
No, diffusive equilibrium requires a concentration gradient and the ability of the molecule to pass through a membrane. If a molecule is impermeable, it cannot move freely across the membrane, so diffusive equilibrium is not possible for that molecule.
