Cell Signalling and Transduction The enzyme that catalyzes the splitting of PIP2 into two molecules of inositol triphosphate (IP3) and diacylglycerol in cell signaling, is phosphokinase C phosphodiesterase C lipokinase phospholipase C phosphokinase C phosphodiesterase C lipokinase phospholipase C ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction cAMP and cGMP are derived from GTP and ATP by the actions of adenylate cyclase and guanylate cyclase respectively None of these ATP and GTP by the actions of guanylate cyclase and adenylate cyclase respectively ATP and GTP by the actions of adenylate cyclase and guanylate cyclase respectively GTP and ATP by the actions of adenylate cyclase and guanylate cyclase respectively None of these ATP and GTP by the actions of guanylate cyclase and adenylate cyclase respectively ATP and GTP by the actions of adenylate cyclase and guanylate cyclase respectively ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction A signal cascade induced by adrenaline or thyroxine must begin with receipt of the signal molecule by a surface receptor results in the activation of a sequence of enzymes needed for the cell effect All of these involves the activation of a G protein must begin with receipt of the signal molecule by a surface receptor results in the activation of a sequence of enzymes needed for the cell effect All of these involves the activation of a G protein ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The binding of ligands to many G-proteins linked receptors leads to shortlived decrease in the concentration of certain extracellular signaling molecules called first messenger increase in the concentration of certain extracellular signaling molecules called first messenger increase in the concentration of certain intracellular signaling molecules called second messenger decrease in the concentration of certain intracellular signaling molecules called second messenger decrease in the concentration of certain extracellular signaling molecules called first messenger increase in the concentration of certain extracellular signaling molecules called first messenger increase in the concentration of certain intracellular signaling molecules called second messenger decrease in the concentration of certain intracellular signaling molecules called second messenger ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In paracrine signaling, the signaling molecules affects only target cells close to the cell from which it was secreted target cells distant from its site of synthesis in cells of an endocrine organ None of these both (a) and (b) target cells close to the cell from which it was secreted target cells distant from its site of synthesis in cells of an endocrine organ None of these both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Why is it that inhaling nitric oxide reduces blood pressure only in the lung tissue and not elsewhere in the body*? Because nitric oxide breaks down quickly and thus cannot travel far None of these Because other body tissues use a different signaling molecule Because nitric oxide cannot cross cell membranes and enter the blood Because nitric oxide breaks down quickly and thus cannot travel far None of these Because other body tissues use a different signaling molecule Because nitric oxide cannot cross cell membranes and enter the blood ANSWER DOWNLOAD EXAMIANS APP
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