Cell Signalling and Transduction Which of the following statements about G proteins is false? They are involved in signal cascades They become activated when bound to GDP They bind to and are regulated by guanine nucleotides They must be active before the cell can make needed cAMP They are involved in signal cascades They become activated when bound to GDP They bind to and are regulated by guanine nucleotides They must be active before the cell can make needed cAMP 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 is also the site of production for the signaling molecule It is incapable of signal transduction It contains the receptor for the signaling molecule It is in the heart muscle It is also the site of production for the signaling molecule It is incapable of signal transduction It contains the receptor for the signaling molecule It is in the heart muscle ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction A signal cascade induced by adrenaline or thyroxine involves the activation of a G protein All of these results in the activation of a sequence of enzymes needed for the cell effect must begin with receipt of the signal molecule by a surface receptor involves the activation of a G protein All of these results in the activation of a sequence of enzymes needed for the cell effect must begin with receipt of the signal molecule by a surface receptor ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is not a type of signaling molecule? Adenylate cyclase Insulin Testosterone Thyroxin Adenylate cyclase Insulin Testosterone Thyroxin ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following processes involve the combining of a message from one signaling molecule with that of another to either enhance or inhibit a cellular effect? Signal amplification Signal transduction Signal integration Signal reception Signal amplification Signal transduction Signal integration Signal reception 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? 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 Smooth muscle cells could not be made to relax All of these Nitric oxide would no longer be produced ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS