Cell Signalling and Transduction Which of the following is true about a hydrophilic signaling molecule? It is a steroid 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 might trigger a signal cascade that causes some effect in a cell It is a steroid 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 might trigger a signal cascade that causes some effect in a cell ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In the signal transduction mechanism known as protein phosphorylation All of these phosphorylated proteins act with enzymes to trigger the signal cascade the signaling molecule binds to a surface receptor receptor kinases play a key role in triggering the signal cascade All of these phosphorylated proteins act with enzymes to trigger the signal cascade the signaling molecule binds to a surface receptor receptor kinases play a key role in triggering the signal cascade 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 is broken down into hormones that affect the heart mimics the action of signal receptors interferes with chemical cascades that trigger contraction of heart muscle breaks down into nitric oxide, which increases blood flow to the heart is broken down into hormones that affect the heart mimics the action of signal receptors interferes with chemical cascades that trigger contraction of heart muscle breaks down into nitric oxide, which increases blood flow to the heart ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation? Smooth muscle cells could not be made to relax All of these It would be more difficult to increase blood flow and reduce blood pressure Nitric oxide would no longer be produced Smooth muscle cells could not be made to relax All of these It would be more difficult to increase blood flow and reduce blood pressure Nitric oxide would no longer be produced 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 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 They prevent the production of key signaling molecules They alter the chemical structure of key signaling molecules ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction A cell is known to respond to a particular signaling molecule. Which of the following must be true of this cell? It contains the receptor for the signaling molecule It is in the heart muscle It is incapable of signal transduction It is also the site of production for the signaling molecule It contains the receptor for the signaling molecule It is in the heart muscle It is incapable of signal transduction It is also the site of production for the signaling molecule ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS