16. Endocrine System

Membrane Bound Receptors and Secondary Messengers

16. Endocrine System

Membrane Bound Receptors and Secondary Messengers

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G Protein-Coupled Receptors

Membrane Bound Receptors and Secondary Messengers Example 1

Membrane Bound Receptors and Secondary Messengers Example 2

Membrane Bound Receptors and Secondary Messengers Example 3

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Mechanism of Hormone Action: Direct Gene Activation

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Mechanism of Hormone Action: Direct Gene Activation

Mechanism of Hormone Action: Second Messenger System

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Multiple Choice

What is the role of G proteins in GPCR signaling?

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Multiple Choice

Hormones can bring about substantial physiological changes at very low concentrations. How does this relate to the concept of second messenger systems?

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Multiple Choice

You are studying how a hormone affects a cell and find that when oxytocin binds the receptor, the intracellular $Ca$ $^2$ $^+$ concentration increases. Based on this information, what could you logically conclude about this cell and hormone?

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Multiple Choice

cAMP, $IP_3$ , and DAG are all molecules that are used as secondary messengers. Which statement below correctly identifies a difference between the pathways in which they are found?