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What is Active transport?

This question is part of Cell Physiology Chapter 3 Test
Asked by Kaylacob, Last updated: Mar 30, 2020

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3 Answers

G. GRAY

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G. GRAY, Writer, M.A, Liverpool

Answered Jan 08, 2020

Active transport is a cellular process of moving molecules across a cellular membrane (into or outside a cell) with the use of cellular energy. Active transport is further divided into primary active transport and secondary active transport. Primary active transport is carried out by the enzyme transmembrane ATPase with the use of ATP as the source of energy. An example of primary active transport in human physiology is the sodium/potassium pump that maintains membrane potential by pumping three ions of sodium out and two ions of potassium into the cell. Secondary active transport uses electrochemical potential as the source of energy to drive the movement of a molecule across a cellular membrane. In this form of active transport, both molecules being transported may move either in the same direction or opposite directions. When they move in the same direction, the process is known as symport, and when they move in opposite directions, it is known as antiport.
 

John Adney

John Adney

Answered Jul 08, 2017

Is movement of molecules from a region of low concentration to a region of high concentrations with dependent energy protein carriers

 

John Adney

John Adney

Answered Apr 05, 2017

Active transport is a process where requires energy for its activities.
 

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