BIOL 1201 : Cell Signaling Clicker Questions
Document Summary
How can the same hormone have different effects in different tissue: cardiac cells have more receptors than intestinal cells, epinephrine circulates to the heart first and thus is in higher concentration around cardiac cells, the two types of muscle cells have different signal transduction pathways for epinephrine and thus have different cellular responses, epinephrine binds to g protein linked receptors in cardiac cells, and these receptors always increase a response to the signal. In this example thromboxane a2 is acting as: local signal molecule, based on your understanding of the membrane permeability, the signal molecules (ligands) binding to cytoplasmic receptors are, nonpolar molecules, the signal molecule leptin is 16,000 da protein. Positive ions moving out of the cytoplasm making it more negative so that is hyperpolarization: an epsp is the result of ____ gates opening and results in ___, na+, depolarization, an ipsp is the result of _____ gates opening and results in ____, k+, hyperpolarization.
