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Active transport is similar to diffusion, in that it is the movement of molecules. However, whereas diffusion occurs passively and molecules move from an area of high concentration to an area of low concentration, active transport reverses this. Molecules are transported from an area of high concentration to an area of low concentration, and this requires energy in the form of ATP. Active transport accross a membrane takes place via specific transport proteins. ATP produced in respiration causes these proteins to change their 3D shape when a molecule binds with it, so that it is taken into the cell/transported from the cell against the concentration gradient. An analogy of a kissing gate can be used. So, for example, if the concentration of mineral salts inside a root hair cell is higher than that outside the cell in the soil, then diffusion cannot take place passively as the concentration gradient is not in the right direction. Mineral salts would not passively move from an area of low concentration (soil) into an area of high concentration (cell). In this case, active transport must be employed for the cell to absorb the ions in the soil. They bind to proteins on the cell membrane, which actively "carry" them into the cell using energy from respiration. In this way, the plant can absorb the mineral salts even though the passive diffusion gradient is the wrong way. Active transport can be defined as "the energy consuming transport of molecules or ions across a membrane against a concentration gradient, made possible by transferring energy from respiration."

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16y ago
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5mo ago

Active transport is a process that requires energy to move molecules across a cell membrane against their concentration gradient. An example of active transport is the sodium-potassium pump, which uses energy to pump sodium ions out of the cell and potassium ions into the cell, maintaining the cell's electrochemical gradient.

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Q: What ia an active transport using an example for explanation?
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What is an example of active transport using physiological processes in the human body?

Absorption of nutrients in the intestines is an example of active transport in the human body. Nutrients like glucose and amino acids are transported from the intestinal lumen into the bloodstream against their concentration gradient by using energy from ATP through active transport processes involving carrier proteins. This allows the body to absorb essential nutrients efficiently for use in various metabolic processes.


What is an Example of active transport?

One example of active transport is the sodium-potassium pump in animal cells. This pump actively transports sodium out of the cell and potassium into the cell against their concentration gradients, using ATP as energy. This process helps maintain the cell's resting membrane potential.


Through what type of proteins does active transport occur?

Active transport occurs through carrier proteins that pump molecules against their concentration gradient using energy from ATP. These carrier proteins undergo conformational changes to transport molecules across the cell membrane.


How does a cell use active transport?

By using ATP.


The Na-K pump is an example of active transport?

Yes, that's correct. The sodium-potassium pump actively transports sodium ions out of the cell and potassium ions into the cell against their concentration gradients using energy from ATP. This process helps to maintain the cell's resting membrane potential and is essential for cellular function.


Is plasmolysis an example of active transport?

No, plasmolysis is not an example of active transport. Plasmolysis occurs when a plant cell loses water and shrinks away from its cell wall. Active transport, on the other hand, involves the movement of substances against their concentration gradient using energy.


How is passive transport from active transport?

The movement of materials across the cell membrane without using cellular energy is called passive transport. The movement of materials against a concentration difference is known as active transport. Active transport requires energy.


A type of transport across a membrane up its concentration gradient using protein carriers and driven by the expenditure of chemical energy is known as what?

This is a description of active transport.


What are the different kind of cell transfort?

Active transport Passive transport (diffusion and transport using protein channels) Receptor mediated transport


What are two types of cellular transport that do not require energy?

Passive transport never requires energy - hence the name passive. Active transport requires the input of energy. Two types of active transport are; primary (using pumps) and secondary (using anti or symports).


Does active transport require water?

Yes, active transport requires energy in the form of ATP but does not specifically require water as a component for the process to occur. Water molecules may be present in the environment where active transport occurs, but water itself is not a requirement for active transport to take place.


What is a sentence using passive transport?

Active Transport is carried out in our body cells. Active Transport uses energy to transport materials.