Cell Signalling and Transduction Which of the following statements about G proteins is false? They become activated when bound to GDP They must be active before the cell can make needed cAMP They are involved in signal cascades They bind to and are regulated by guanine nucleotides They become activated when bound to GDP They must be active before the cell can make needed cAMP They are involved in signal cascades They bind to and are regulated by guanine nucleotides ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Simple nerve reflexes use signaling molecules called nitric oxides G proteins proteases neurotransmitters nitric oxides G proteins proteases neurotransmitters ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following comes under the category of cell surface receptor? Ion-channel linked receptors All of these G protein linked receptors Enzyme linked receptors Ion-channel linked receptors All of these G protein linked receptors Enzyme linked receptors 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; beta cells of the pancreas NGF; the nerves involved in simple reflexes Insulin; many different cell types that use glucose for fuel PDGF; the blood Insulin; beta cells of the pancreas NGF; the nerves involved in simple reflexes Insulin; many different cell types that use glucose for fuel PDGF; the blood ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is true about a hydrophilic signaling molecule? 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 It is a steroid Since it can enter the cell, it directly affects some specific cell process ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction A signal cascade induced by adrenaline or thyroxine All of these involves the activation of a G protein 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 All of these involves the activation of a G protein 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
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