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What is it called when a molecule uses energy to move across a semiseprable membrane?
active transport
How do carrier protiens transport substances across cell membrane?
Carrier proteins facilitate the transport of substances across the cell membrane by binding to the specific molecules they transport and undergoing conformational changes to move the molecules across the membrane. This process is often referred to as facilitated diffusion. It allows for the transport of specific molecules, such as glucose or ions, across the membrane, down their concentration gradient.
What type of transport requires energy move a molecule?
Active transport requires energy to move a molecule.
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...)
The diagram represents movement of a large molecule across a membrane?
It depends on what is moving across the membrane. Some molecules use transport proteins and the cell would need those embedded in the membrane. Water doesn't need them and it freely moves in and out.
What is carrier-assisted transport?
Carrier-assisted transport is a mechanism in which a carrier molecule assists in the movement of a substance across a biological membrane. The carrier molecule can bind to the substance and facilitate its transport across the membrane. This process is typically passive and does not require energy input from the cell.
Does active transport require a membrane?
Yes, active transport requires a membrane because it involves the movement of molecules or ions against their concentration gradient, which requires energy expenditure. This process is facilitated by specific transport proteins embedded within the membrane.
What happens if a molecule is too large to go through a membrane?
The molecule will be transported across the membrane by way of a transport protein or protein channel.
What kind of molecule is used to transport molecules across the membrane?
hydropolactive.
How does cell move molecule that is too large for transport proteins?
The cell membrane folds around the molecule.
What is it when a molecule uses energy to move across a semipermeable membrane?
active transport
What requires the use of the energy and the help of transport proteins to move a molecule across a cell membrane?
Active transport
How does a cell move a molecule that is too large transport proteins?
Cells may use mechanisms such as endocytosis to engulf and transport large molecules with the help of specialized transport proteins. These transport proteins facilitate the movement of large molecules across the cell membrane by forming vesicles that enclose the molecules and transport them to their destination within the cell. Once inside the cell, the vesicle can fuse with other cellular compartments to release the molecule for further processing or use.
How do carrier proteins transport substance across the membrane?
The carrier protein changes shape , shielding the molecule from the interior of the membrane.
What type of molecule embedded in the cell membrance allows larger molecule to pass through the membrance by active transport?
Transport proteins allow the active transport of large molecules through the cellular membrane.
What are two major means of active membrane transport?
Two major means of active membrane transport are primary active transport, which directly uses energy in the form of ATP to transport molecules against their concentration gradient, and secondary active transport, which uses the energy stored in the electrochemical gradient of one molecule to drive the transport of another molecule against its gradient.
What is it called when a molecule uses energy to move across a semiseprable membrane?
active transport
