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 other body tissues use a different signaling molecule Because nitric oxide cannot cross cell membranes and enter the blood None of these Because nitric oxide breaks down quickly and thus cannot travel far Because other body tissues use a different signaling molecule Because nitric oxide cannot cross cell membranes and enter the blood None of these Because nitric oxide breaks down quickly and thus cannot travel far ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction What is the name of the protein signaling molecule that alters glucose uptake, and where would its receptors be located? NGF; the nerves involved in simple reflexes PDGF; the blood Insulin; beta cells of the pancreas Insulin; many different cell types that use glucose for fuel NGF; the nerves involved in simple reflexes PDGF; the blood Insulin; beta cells of the pancreas Insulin; many different cell types that use glucose for fuel ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction cAMP and cGMP are derived from ATP and GTP by the actions of adenylate cyclase and guanylate cyclase respectively ATP and GTP by the actions of guanylate cyclase and adenylate 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 adenylate cyclase and guanylate cyclase respectively ATP and GTP by the actions of guanylate cyclase and adenylate cyclase respectively GTP and ATP by the actions of adenylate cyclase and guanylate cyclase respectively None of these 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 decrease in the concentration of certain intracellular signaling molecules called second messenger increase 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 decrease in the concentration of certain intracellular signaling molecules called second messenger increase in the concentration of certain intracellular signaling molecules called second messenger ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In terms of cell communication, what do bacterial pathogens such as cholera and anthrax have in common? They destroy the receptors for key signaling molecules They alter the chemical structure of key signaling molecules They block the normal functioning of signal transduction mechanisms They prevent the production of key signaling molecules They destroy the receptors for key signaling molecules They alter the chemical structure of key signaling molecules They block the normal functioning of signal transduction mechanisms They prevent the production of key signaling molecules ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is a second messenger? Phospholipase C lnositol 1,4,5-triphosphate Both (a) and (b) Diacyl glycerol Phospholipase C lnositol 1,4,5-triphosphate Both (a) and (b) Diacyl glycerol ANSWER DOWNLOAD EXAMIANS APP
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