To propose: A mechanism for the activity of caffeine that accounts for the increase in alertness and sleeplessness. Introduction: Epinephrine is a hormone secreted by the adrenal glands in response to stress. It reaches to the target cells through the blood and binds to its cell-surface receptors called G-protein coupled receptors . After binding, intracellular signaling cascade begins.

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Chapter 11, Problem 10TYU

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To propose: A mechanism for the activity of caffeine that accounts for the increase in alertness and sleeplessness.

Introduction: Epinephrine is a hormone secreted by the adrenal glands in response to stress. It reaches to the target cells through the blood and binds to its cell-surface receptors called G-protein coupled receptors. After binding, intracellular signaling cascade begins.

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