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BIO202-CH16-PIP-Ca
BIO202 - CH16 - PIP-Ca 2nd Messenger Mech - Marieb/Hoehn - RioSalado - AZ
Question | Answer |
---|---|
In PIP, intracellular __ act as final mediator. | Calcium ions |
In PIP mechanism, activated G protein binds to & activates __. | phospholipase C (effector enzyme) |
Phospholipase C splits a plasma-membrane phospholipid __ into __ & __. | PIP2 (phosphatidyl inositol biphosphate) into DAG & IP3 |
DAG activates __. | Protein kinase C |
IP3 triggers release of __ from ER. | Ca2+ |
Liberated Ca2+ at end of PIP mechanism, takes on a 2nd messenger role by? | Altering enzymes & Ca channels, or by binding to calmodulin. |
Once Ca2+ binds to calmodulin, what happens? | Enzymes are activated that amplify the cellular response. |
Binding of thyroid-stimulating hormone promotes synthesis of? | thyroxine |
Binding of growth hormone (GH) in bone & muscle cells activates? | anabolic reaction in which amino acids build into tissue proteins. |
The insulin receptor is activated by __ when insulin binds. | autophosphorylation (by its own tyrosines). |