Cell Signalling and Transduction Which of the following statements about G proteins is false? They are involved in signal cascades They must be active before the cell can make needed cAMP They become activated when bound to GDP They bind to and are regulated by guanine nucleotides They are involved in signal cascades They must be active before the cell can make needed cAMP They become activated when bound to GDP They bind to and are regulated by guanine nucleotides ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is a second messenger? Diacyl glycerol lnositol 1,4,5-triphosphate Both (a) and (b) Phospholipase C Diacyl glycerol lnositol 1,4,5-triphosphate Both (a) and (b) Phospholipase C 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 Nitric oxide would no longer be produced It would be more difficult to increase blood flow and reduce blood pressure Smooth muscle cells could not be made to relax All of these Nitric oxide would no longer be produced It would be more difficult to increase blood flow and reduce blood pressure ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The enzyme that catalyzes the splitting of PIP2 into two molecules of inositol triphosphate (IP3) and diacylglycerol in cell signaling, is phosphokinase C phospholipase C phosphodiesterase C lipokinase phosphokinase C phospholipase C phosphodiesterase C lipokinase ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Cell signaling can be classified into None of these three distinct types based on the distance over which the signaling molecules act two distinct types based on the distance over which the signaling molecules act three distinct types based on the signaling molecules None of these three distinct types based on the distance over which the signaling molecules act two distinct types based on the distance over which the signaling molecules act three distinct types based on the signaling molecules ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The hormone or ligand can be considered as first messenger none of these second messenger both (a) and (b) first messenger none of these second messenger both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP
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