The G-protein-linked receptor is located in the plasma membrane. When GDP is attached to the G protein the messenger is considered inactive. GTP replaces GDP and now the messenger is considered active. The G protein carrying the GTP leaves the receptor and binds to and enzyme which causes a cellular response. All of this is brought on by a attaching to the G-protein-linked receptor and will shut down quickly when the is no longer there.

Signal Molecules

Signal Molecules

Explanation:

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a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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