Cell Signalling and Transduction Which of the following processes involve the combining of a message from one signaling molecule with that of another to either enhance or inhibit a cellular effect? Signal amplification Signal transduction Signal integration Signal reception Signal amplification Signal transduction Signal integration Signal reception ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The binding of ligands to many G-proteins linked receptors leads to shortlived increase in the concentration of certain extracellular signaling molecules called first messenger decrease 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 increase in the concentration of certain extracellular signaling molecules called first messenger decrease 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 The major second messengers are cAMP All of these cGMP DAG cAMP All of these cGMP DAG 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 None of these GTP and ATP by the actions of adenylate cyclase and guanylate cyclase respectively 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 None of these GTP and ATP by the actions of adenylate cyclase and guanylate cyclase respectively ATP and GTP by the actions of guanylate cyclase and adenylate cyclase respectively ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In paracrine signaling, the signaling molecules affects only both (a) and (b) target cells distant from its site of synthesis in cells of an endocrine organ target cells close to the cell from which it was secreted None of these both (a) and (b) target cells distant from its site of synthesis in cells of an endocrine organ target cells close to the cell from which it was secreted None of these 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 prevent the production of key signaling molecules They alter the chemical structure of key signaling molecules They destroy the receptors for key signaling molecules They block the normal functioning of signal transduction mechanisms They prevent the production of key signaling molecules They alter the chemical structure of key signaling molecules They destroy the receptors for key signaling molecules They block the normal functioning of signal transduction mechanisms ANSWER DOWNLOAD EXAMIANS APP
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