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 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 ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is a hormone whose action requires a cell surface receptor? Adrenaline Nitric oxide Growth factors Progesterone Adrenaline Nitric oxide Growth factors Progesterone ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is true about a hydrophilic signaling molecule? It is a steroid Its receptor is located in the cytosol of the target cell 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 It is a steroid Its receptor is located in the cytosol of the target cell 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 ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The hormone or ligand can be considered as second messenger none of these first messenger both (a) and (b) second messenger none of these first messenger both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In paracrine signaling, the signaling molecules affects only None of these target cells close to the cell from which it was secreted both (a) and (b) target cells distant from its site of synthesis in cells of an endocrine organ None of these target cells close to the cell from which it was secreted both (a) and (b) target cells distant from its site of synthesis in cells of an endocrine organ 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? Nitric oxide would no longer be produced It would be more difficult to increase blood flow and reduce blood pressure All of these Smooth muscle cells could not be made to relax Nitric oxide would no longer be produced It would be more difficult to increase blood flow and reduce blood pressure All of these Smooth muscle cells could not be made to relax ANSWER DOWNLOAD EXAMIANS APP
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