Transport Across Membranes

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Direct Active Transport

by لمى حسني محمود شحاده _ - Tuesday, 22 February 2022, 5:41 PM

In cellular biology active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration against the concentration gradient .Active transport requires cellular energy to achieve this movement .There are two types of active transport: praimary active transport that uses adonosine triphosphate (ATP), and secondary active transport that uses an electrochemical gradient