Cell Signalling and Transduction Which of the following is a second messenger? lnositol 1,4,5-triphosphate Both (a) and (b) Phospholipase C Diacyl glycerol lnositol 1,4,5-triphosphate Both (a) and (b) Phospholipase C Diacyl glycerol 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 It would be more difficult to increase blood flow and reduce blood pressure Nitric oxide would no longer be produced All of these Smooth muscle cells could not be made to relax It would be more difficult to increase blood flow and reduce blood pressure Nitric oxide would no longer be produced All of these ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Simple nerve reflexes use signaling molecules called proteases G proteins nitric oxides neurotransmitters proteases G proteins nitric oxides neurotransmitters ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following statements about G proteins is false? They must be active before the cell can make needed cAMP They bind to and are regulated by guanine nucleotides They become activated when bound to GDP They are involved in signal cascades They must be active before the cell can make needed cAMP They bind to and are regulated by guanine nucleotides They become activated when bound to GDP They are involved in signal cascades 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 Its receptor is located in the cytosol of the target cell Since it can enter the cell, it directly affects some specific cell process It is a steroid It might trigger a signal cascade that causes some effect in a cell Its receptor is located in the cytosol of the target cell Since it can enter the cell, it directly affects some specific cell process It is a steroid 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? Insulin; many different cell types that use glucose for fuel Insulin; beta cells of the pancreas PDGF; the blood NGF; the nerves involved in simple reflexes Insulin; many different cell types that use glucose for fuel Insulin; beta cells of the pancreas PDGF; the blood NGF; the nerves involved in simple reflexes ANSWER DOWNLOAD EXAMIANS APP
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