Gorgeous Example Of Primary Active Transport pics

Example Of Primary Active Transport. Uptake of glucose in the human intestines is an example of primary active transport. As a primary active transport occurs via a carrier protein, a secondary active transport may share the carrier protein and energy it uses to transport a second molecule.

In this way the energy-expending diffusion of the driving substrate powers the energy-absorbing movement of the driven substrate from low concentration to high. When active transport consumes chemical energy, as from ATP (adenosine triphosphate), it is called primary active transport, but when it uses an electrochemical gradient instead, it is known as secondary active transport. Example : Na+ / glucose co-transporter.

Active transport requires cellular energy to carry out this movement.

The primary active transport activity of the pump occurs when it is oriented such that it spans the membrane with its extracellular side closed, and its intracellular region open and associated with a molecule of ATP.

Secondary active transport brings sodium ions, and possibly other compounds, into the cell. Primary active transport uses a direct source of chemical energy - for example, ATP - in order to move the molecules across their gradient and across a membrane. There are four main types of passive transport: osmosis, diffusion, facilitated diffusion and filtration.

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