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 block the normal functioning of signal transduction mechanisms They destroy the receptors for key signaling molecules They alter the chemical structure of key signaling molecules They prevent the production of key signaling molecules They block the normal functioning of signal transduction mechanisms They destroy the receptors for key signaling molecules They alter the chemical structure of key signaling molecules ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In the signal transduction mechanism known as protein phosphorylation the signaling molecule binds to a surface receptor All of these phosphorylated proteins act with enzymes to trigger the signal cascade receptor kinases play a key role in triggering the signal cascade the signaling molecule binds to a surface receptor All of these phosphorylated proteins act with enzymes to trigger the signal cascade receptor kinases play a key role in triggering the signal cascade ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is true about a hydrophilic signaling molecule? It might trigger a signal cascade that causes some effect in a cell Since it can enter the cell, it directly affects some specific cell process Its receptor is located in the cytosol of the target cell It is a steroid It might trigger a signal cascade that causes some effect in a cell Since it can enter the cell, it directly affects some specific cell process Its receptor is located in the cytosol of the target cell It is a steroid ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Nitroglycerin has long been administered to human patients suffering from chronic chest pain (angina). This medication works because it interferes with chemical cascades that trigger contraction of heart muscle mimics the action of signal receptors is broken down into hormones that affect the heart breaks down into nitric oxide, which increases blood flow to the heart interferes with chemical cascades that trigger contraction of heart muscle mimics the action of signal receptors is broken down into hormones that affect the heart breaks down into nitric oxide, which increases blood flow to the heart ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The signaling molecules called steroid hormones are hydrophilic and so cannot penetrate the plasma membrane never enter the blood of humans bind to cell surface receptors to trigger chemical cascades are made in one location of the body but have their effects some distance away are hydrophilic and so cannot penetrate the plasma membrane never enter the blood of humans bind to cell surface receptors to trigger chemical cascades are made in one location of the body but have their effects some distance away ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The hormone or ligand can be considered as second messenger both (a) and (b) first messenger none of these second messenger both (a) and (b) first messenger none of these ANSWER DOWNLOAD EXAMIANS APP
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