Substances can be moved from a region of lower concentration to a region of higher concentration, against the concentration gradient. Hence, it is useful for plants for absorbing mineral salts from the soil, reabsorption of useful substances back into the bloodstream in the kidney and such.
active transport is used to transport substances into a cell against a concentration gradient. for example if the interior of a cell contains more glucose than the outside of the cell, normally the glucose would diffuse out of the cell but active transport uses the energy from the hydrolysis of ATP to transport the glucose into the cell against the concentration gradient
The shipment receiver does not have to re-activate the product upon delivery(i.e.molten sulfer).Thankyouverymuch........
active transport
~ kidney and homeostasis..........
The transport of molecules across the plasma membrane of a living cell by a process that involves a specific transmembrane carrier
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Active transport.Substances naturally (passively) spread out evenly. This means there is a net movement from higher to lower concentrations. The process is diffusion, and no energy input is required.For a substance to move the other way (up or against the concentration gradient) a supply of energy is required. This process (active transport) will not happen in non-living systems, but cells can supply energy, for example in the form of ATP.True
active transport
Yes it is. There are many examples of active transport in living organisms.1. Plant roots absorb minerals from the soil water surrounding them by active transport.2. In the Human body, the glucose formed during digestion passes from the small intestine into the blood stream by active transport.
~ kidney and homeostasis..........
It maintains the cell's chemical environment.
Active Transport
Active transport requires the expenditure of energy by the cells. It is an uphill movement of a substance through a living cell membrane. Adenosine triphosphate or ATP is a chemical substance that gives the energy required for the active transport process. ATP is produced in the mitochondria using energy from nutrients and is capable of releasing that energy to do work in the cell. There is a breakdown of APT and a use of energy that makes this process possible. Cellular energy is required to move substances from a low concentration to a high concentration. Because the formation and breakdown of ATP requires complex cellular activity, active transport mechanisms can take place only through living membranes.
Cells need active transport to regulate their internal environment. The ability of a cell to regulate its internal environment is important because it allows the cell to add substrates to reactions that are necessary for life. Primary active transport (the movement of molecules against their electrochemical gradient) helps to power secondary active transport (or co-transport) which is the transport of an ion/molecule against its electrochemical gradient, in company with an ion/molecule being transported with its electrochemical gradient.
Diffusion is passive, it happens everywhere whether living things are involved or not. It results from the natural thermal motion of particles.
Diffusion is a rapid process and is therefore limited to shorter distances. Transport is includes the change of wastes, nutrients and gases.
Diffusion occurs only due to the concentration gradient i.e. slovent move from its high concentration to low concentration side, where as active transport also take use of energy mostly in the form of ATP in living beings and can occur against concentration gradient.
The transport of molecules across the plasma membrane of a living cell by a process that involves a specific transmembrane carrier
WUB DUB DUB! - Skrillex