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the main feature of cotransport is that neither molecule can move alone; movement of both molecules is obligatory or coupled..
When the transported molecule and cotransported ion move in the same direction, the process is said to be symport.
when they move in opposite directions, the process is said antiport
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What is a contransport?
Transport across membranes can be fueled not only by ATP, but by the energy stored in ion gradients. In such cases, the free energy released during the transport of ions down an electrochemical gradient is used to pump other ions or molecules up their electrochemical gradient. This process is called cotransport because one carrier protein mediates the transport of both species. Some cotransporters carry both solutes in the same direction (symport), while others transport one solute into the cell and the other out of the cell (antiport).
When molecules move against their concentration gradient it is called?
This is known as active transport and requires energy usually in the form of ATP. It can also use the potential energy generated across a membrane by the transport of a different ion (either symport or antiport).
Which type of transport is the coupled passage of two materials across a membrane?
the symport
What type of transport is faciliated diffusion?
Neither of these require energy. Diffusion occurs naturally when a higher concentration of a substance exists on one side of a membrane than the other; molecules will enter into the area of lesser concentration until there is an equilibrium on both sides. Active transport requires the energy of the cell.
Identify 2 methods of Active transport?
The two principle methods of active transport are ATP-driven active transport (e.g. Na+ - K+ ATPase) and ion gradient-driven active transport, as in the Na+ - glucose symport.
What is the difference between countertransport and antiport?
Cotransport is the name of a process in which two substances are simultaneously transported across a membrane by one protein, or protein complex which does not have ATPase activity. Different types of co-transport Symport When both substances are transported in the same direction the transport protein is known as a symport . Antiport When the substances are transported in opposite directions the transport protein is known as an antiport.
What is the difference between symport and antiport?
the numbers in front how much they can carry
What is a contransport?
Transport across membranes can be fueled not only by ATP, but by the energy stored in ion gradients. In such cases, the free energy released during the transport of ions down an electrochemical gradient is used to pump other ions or molecules up their electrochemical gradient. This process is called cotransport because one carrier protein mediates the transport of both species. Some cotransporters carry both solutes in the same direction (symport), while others transport one solute into the cell and the other out of the cell (antiport).
When molecules move against their concentration gradient it is called?
This is known as active transport and requires energy usually in the form of ATP. It can also use the potential energy generated across a membrane by the transport of a different ion (either symport or antiport).
Membrane carrier protein carrying 2 or more solutes through plasma membrane in opposite directions?
It's an antiport for opposite directions and a symport for same directions. I just spent like an hour looking this up for one question on one assignment haha.
What is a symport system?
A symport system utilizes a carrier protein to move hydrogen and chloride ions from inside to outside of the cell, and requires energy to do this.
Which type of transport is the coupled passage of two materials across a membrane?
the symport
What is the name of the carrier type that moves two solutes such as glucose and sodium?
Symport
How do fats cross the cell membrane?
Transprot or exchange of ions through the lipid bilayer is done by active transport in which energy is utilized in the form of ATP or in the form of proton motive force. It is usually done as symport i.e. molecules or ions move in same direction or as antiport inwhich ions move in opposite direction.
What type of transport is faciliated diffusion?
Neither of these require energy. Diffusion occurs naturally when a higher concentration of a substance exists on one side of a membrane than the other; molecules will enter into the area of lesser concentration until there is an equilibrium on both sides. Active transport requires the energy of the cell.
How enter the cell?
A few, like OH- can pass the membrane without help, but most ions need canal proteins (that means a uniport, symport, or antiporter) and probably a carrier protein additionally.
Identify 2 methods of Active transport?
The two principle methods of active transport are ATP-driven active transport (e.g. Na+ - K+ ATPase) and ion gradient-driven active transport, as in the Na+ - glucose symport.
