Cell Signalling and Transduction The signaling molecules called steroid hormones are made in one location of the body but have their effects some distance away never enter the blood of humans are hydrophilic and so cannot penetrate the plasma membrane bind to cell surface receptors to trigger chemical cascades are made in one location of the body but have their effects some distance away never enter the blood of humans are hydrophilic and so cannot penetrate the plasma membrane bind to cell surface receptors to trigger chemical cascades ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In the signal transduction mechanism known as protein phosphorylation receptor kinases play a key role in triggering the signal cascade phosphorylated proteins act with enzymes to trigger the signal cascade the signaling molecule binds to a surface receptor All of these receptor kinases play a key role in triggering the signal cascade phosphorylated proteins act with enzymes to trigger the signal cascade the signaling molecule binds to a surface receptor All of these ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is a hormone whose action requires a cell surface receptor? Nitric oxide Growth factors Progesterone Adrenaline Nitric oxide Growth factors Progesterone Adrenaline ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following statements about G proteins is false? 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 They are involved in signal cascades They must be active before the cell can make needed cAMP They become activated when bound to GDP ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In vasodilation, proper nerve signals sent to blood vessels cause the release of nitric oxide from endothelial cells relaxation of smooth muscle cells reduced blood pressure All of these the release of nitric oxide from endothelial cells relaxation of smooth muscle cells reduced blood pressure All of these ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction When a __________ reaches its __________ , there is a specific means of receiving it and acting on the message. This task is the responsibility of specialized proteins called __________ . signaling molecule; target cell; receptors kinase; receptor; proteases signaling molecule; target cell; G proteins signaling molecule; receptor; G proteins signaling molecule; target cell; receptors kinase; receptor; proteases signaling molecule; target cell; G proteins signaling molecule; receptor; G proteins ANSWER DOWNLOAD EXAMIANS APP
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