The answer would be 96.5% resource was my textbook
Answer:
C.It accelerates the production of a second messenger.
Explanation:
Adenylyl cyclase is an enzyme that catalyzes the conversion of adenosine triphosphate (ATP) to cyclic adenosine monophosphate (cAMP), a second messenger that activates the protein kinase A (PK-A) protein by dissociation of its regulatory subunit from the catalytic subunit. The first step of the epinephrine signaling pathway consists of the hormone binding to the epinephrine receptor localized on the cell surface. This binding activates a G protein inside the cell, which in turn activates the adenylyl cyclase enzyme. Subsequently, adenylyl cyclase converts ATP molecules into cAMP molecules. Since cAMP transports the message of the epinephrine hormone within the cell this molecule (cAMP) is considered to be a second messenger. Finally, cAMP activates the PK-A enzyme which phosphorylates different proteins and thus triggers different biological processes.
Answer: "assisted living"
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Weathering is a destructive force because is moves and breaks up peices of rock and dirt.
When the precapillary sphincters are relaxed, that is open, blood will pass through the TRUE CAPILLARIES.
When blood are flowing through the true capillaries they take part in exchange with the tissue cells. When the precappilary sphincters are closed, blood normally flow through the shunting, thus bypassing the tissue cells.
