the sodium channel exchanger NCX transports sodium into and calcium out of cardiac muscle cells. Describe why this itransporter is classified as secondary active transport?
the sodium channel exchanger NCX transports sodium into and calcium out of cardiac muscle cells. Describe why this itransporter is classified as secondary active transport?
Active Transport across a lipid bilayer takes place when we have to move an ion against its concentration gradient and in such condition, we have to provide external energy to allow this movement. When ATP is used as an energy source to move an ion uphill its concentration gradient it is known as primary active transport. In the case of secondary active transport, the transport of an ion against its concentration gradient takes place by using energy other than ATP. The energy used is mostly by the coupling reaction which uses the electrochemical gradient generated by the transport of one ion along its electrochemical gradient which is used as an energy source to transport the uphill movement of another ion and the later is known as secondary active transport.
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