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What is it called when molecules uses energy to move across a semipermeable membrane?
Active transport
What process drives molecules across a membrane against a concentration gradient?
Active transport is the process that drives molecules across a membrane against a concentration gradient, requiring energy input in the form of ATP. This process allows cells to accumulate substances they need in higher concentrations than their surroundings.
What is it called when sugars pass across the membrane that requires the use of energy?
active transport
What is net movement of substances across plasma membrane without additional energy?
Diffusion. With the need of energy, it would be called active transport.
What are some substances that help in active transport?
Some substances that help in active transport include ATP (adenosine triphosphate), which provides the energy needed for transport processes, and carrier proteins, which facilitate the movement of molecules or ions across the cell membrane against their concentration gradient. Sodium-potassium pumps are an example of a system that actively transports sodium and potassium ions across the cell membrane.
Are carrier proteins active or passive transport?
Carrier proteins facilitate active transport by moving molecules or ions across a cell membrane against their concentration gradient. They require energy in the form of ATP to transport substances across the membrane.
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.
How does active transport work against the concentration gradient to move substances across a cell membrane?
Active transport is a process in which cells use energy to move substances against their concentration gradient, from an area of low concentration to an area of high concentration, across the cell membrane. This is achieved by using specialized proteins called pumps that actively transport the substances across the membrane, requiring energy in the form of ATP.
What is the movement of materials across a membrane that requires energy input called?
Active transport is the movement of materials across a membrane that requires energy input, typically in the form of ATP. This process allows cells to move molecules against their concentration gradient, ensuring the proper balance of ions and molecules inside and outside the cell.
How is facilitated diffusion similar to active transport in terms of their mechanisms of moving substances across the cell membrane?
Facilitated diffusion and active transport are similar in that they both involve the movement of substances across the cell membrane with the help of specific proteins. However, facilitated diffusion does not require energy, while active transport does require energy in the form of ATP to move substances against their concentration gradient.
What is it called when molecules uses energy to move across a semipermeable membrane?
Active transport
Active transport requires what?
Energy-requiring process by which substances move across the plasma membrane against a concentration gradient.
What functions do carrier proteins perform in active transport?
Carrier proteins in active transport actively pump molecules or ions against their concentration gradient across a cell membrane using energy from ATP. They allow specific substances to be moved across the membrane in a controlled manner, helping to maintain cellular homeostasis and regulate cell function.
What is used to move a substance through a membrane in active transport?
Electrochemical gradient is used to move substances through a membrane in active transport.
How is active transport similar to facilitated diffusion in terms of their mechanisms of moving substances across the cell membrane?
Active transport and facilitated diffusion are both mechanisms used by cells to move substances across the cell membrane. Both processes require the use of specific proteins embedded in the cell membrane to facilitate the movement of substances. However, the key difference between the two is that active transport requires energy input from the cell to move substances against their concentration gradient, while facilitated diffusion does not require energy and moves substances down their concentration gradient.
The movement of substances across the cell membrane that requires the cell to use energy?
It's called active transport. When talking about the cell, it is usually bigger substances that use passages in the cell membrane to access the inner part of the cell, and they need energy to get there. The opposite; passive transport or diffusion, is the movement of dissolved materials through a cell membrane without the use of cellular energy. THis happens with smaller substances.
How do facilitated diffusion and active transport compare and contrast in terms of their mechanisms of transport across the cell membrane?
Facilitated diffusion and active transport are both ways that substances move across the cell membrane, but they differ in their mechanisms. Facilitated diffusion uses protein channels to help substances passively move from areas of high concentration to low concentration, while active transport requires energy to move substances against their concentration gradient using protein pumps.
