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 phosphodiesterase C phosphokinase C phospholipase C lipokinase phosphodiesterase C phosphokinase C phospholipase C lipokinase ANSWER DOWNLOAD EXAMIANS APP
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 are hydrophilic and so cannot penetrate the plasma membrane bind to cell surface receptors to trigger chemical cascades never enter the blood of humans are made in one location of the body but have their effects some distance away are hydrophilic and so cannot penetrate the plasma membrane bind to cell surface receptors to trigger chemical cascades never enter the blood of humans 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 in the heart muscle It contains the receptor for the signaling molecule It is incapable of signal transduction It is also the site of production for the signaling molecule It is in the heart muscle It contains the receptor for the signaling molecule It is incapable of signal transduction It is also the site of production for the signaling molecule ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction In paracrine signaling, the signaling molecules affects only both (a) and (b) target cells close to the cell from which it was secreted None of these target cells distant from its site of synthesis in cells of an endocrine organ both (a) and (b) target cells close to the cell from which it was secreted None of these target cells distant from its site of synthesis in cells of an endocrine organ ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Why is it that inhaling nitric oxide reduces blood pressure only in the lung tissue and not elsewhere in the body*? Because nitric oxide breaks down quickly and thus cannot travel far Because nitric oxide cannot cross cell membranes and enter the blood Because other body tissues use a different signaling molecule None of these Because nitric oxide breaks down quickly and thus cannot travel far Because nitric oxide cannot cross cell membranes and enter the blood Because other body tissues use a different signaling molecule None of these 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 It is a steroid Since it can enter the cell, it directly affects some specific cell process It might trigger a signal cascade that causes some effect in a cell Its receptor is located in the cytosol of the target cell It is a steroid Since it can enter the cell, it directly affects some specific cell process ANSWER DOWNLOAD EXAMIANS APP
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