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What Is Active And Passive Transport?

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Shahzad Saleem Profile
Shahzad Saleem answered
Active transport is the movement of solutes against concentration gradient or electrical gradient. The solute pass from low solute concentration to the higher solute concentration therefore it is also known as uphill transport depends upon the sites on in repulsion and attracts negative charges.

Active transport is an energy dependent process that requires ATPs. The phenomenon of active transport cell membranes is dependent upon the presence of specific protein carriers.

Examples of Active Transport includes Sodium pumps in cells: the cells pump out Na+ from the intracellular space in the extra cellular space, which has a high concentration of Na+. This pumping out of Na+ by the cells is against the concentration gradient and utilizes ATP.
Secretion of H+ B ions by the oxyntic cells of the gastric glands. Reabsorption of glucose from the proximal convoluted tubules of the kidney.Active uptake of iodide by the cells of the thyroid gland.

Passive transport is the movement of solutes towards the concentration gradient or electrical gradient. The solute pass from high solute concentration to the low solute concentration therefore it is also known as downhill transport. The energy required for the passive transport is not derived from ATPs rather from the random motion of the molecules themselves. Smaller the size of the substance, more rapid will be its transport.
Anonymous Profile
Anonymous answered
Active Transport= Movement of a substance from an area of low concentration to an area of high concentration (AGAINST THE CONCENTRATION GRADIENT) by a protein pump
- Needs Energy

Passive Transport= Movement of a substance from an area of high concentration to an area of low concentration (DOWN THE CONCENTRATION GRADIENT)
-Does not need energy
amber Jhon Profile
amber Jhon answered
Active transport is the movement of particles against the concentration gradient while passive transport is the movement of particles towards the concentration gradient. The second difference is that active transport requires energy for the movement of particles from the concentration of lower gradient to the concentration of higher gradient while in passive transport, energy is not requirement and there is an automatic movement of particles from higher to lower gradient. For example, when air moves from warmer to colder region then it is passive transport but if inverse happens then it is active transport of air.
Shumaila Sadia Profile
Shumaila Sadia answered
Passive transport in the cell means that no career protein is required for the transportation of the material in the cell. Concentration gradient is maintained and substance flow from areas of higher concentration to area of lower concentration without any aid. While in the active transport a tri-phosphate protein is required for the exchange of substances .The career protein is called ATP(adenosine-triphosphate) and transport is against the concentration gradient.
Anonymous Profile
Anonymous answered
Active transport is the movement of substance that require energy wile passive do not require.
Erza Eirra Fazirra Profile
Active transport uses energy to move across the plasma membrane, unlike passive transport which does not use any type of energy...
amber Jhon Profile
amber Jhon answered
Active transport differ from the passive transport in a way that active transport always takes place by the expenditure of energy and takes place from lower to higher concentration or against the concentration gradient. Whereas, passive transport occurs without any expenditure of energy and always takes place from higher to lower concentration or towards the concentration gradient.
Aisha Profile
Aisha answered
Active transport is actually the process through which the dissolved molecules move across a cell membrane from lower to higher concentration. Examples of Active transport in the body are found during the process of digestion of food in the small intestine or ileum. After the food is absorbed by villi, the concentration of food molecules inside it increases, Thus more food cannot diffuse inside villu. This prompts sugars, amino acids, minerals and vitamins are absorbed into the villi from lower to higher concentration.
Passive transport on the other hand, occurs when substances in the body move from high concentration to lower concentration until they reach equal proportions. The examples are diffusion and osmosis of substances like oxygen, glucose, water and mineral salts.
Anonymous Profile
Anonymous answered
Active transport is the movement of substance from an area of low concentration to a higher concentration
Maynard Keynes Profile
Maynard Keynes answered
Active transport definition: Specific transport protein consumption of energy of ions or small molecules through the membrane against the concentration gradient mode of transport.
Passive transport definition: The concentration of ions or small molecules in the difference or potential difference along the electrochemical gradient driven mode of transport through the membrane.
Anonymous Profile
Anonymous answered
Well Active transport is actually when the cell membrane and the proteins  have to move to the (any thing)  into the cell. It usually takes place to larger molecules and subtances. It uses energy.

Wheras, Passive transport is when the molecule has to go through itself. Just like osmosis and diffusion.
johntavis king Profile
johntavis king answered
In your blood cells skin cells anywhere on or in your body that can made and taken away is active because it takes energy to do these things and blood flow it self uses passive transport because it requires no energy your heart does all the work
Anonymous Profile
Anonymous answered
Active transport is a process which requires energy to move a particle or ion through the cell membrane. It is unlike passive transport in that the system does not require energy to do so. In active transport molecules move from places of lower concentration to higher concentration. The variable in passive transport is the permeability of the cell membranes.
Anonymous Profile
Anonymous answered
Active transport is a type of diffusion through a cell membrane which requires energy for diffusing

Passive requires no energy people

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