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 is incapable of signal transduction It contains the receptor for the signaling molecule It is also the site of production for the signaling molecule It is in the heart muscle It is incapable of signal transduction It contains the receptor for the signaling molecule It is also the site of production for the signaling molecule 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? NGF; the nerves involved in simple reflexes Insulin; beta cells of the pancreas PDGF; the blood Insulin; many different cell types that use glucose for fuel NGF; the nerves involved in simple reflexes Insulin; beta cells of the pancreas PDGF; the blood Insulin; many different cell types that use glucose for fuel ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following is true about a hydrophilic signaling molecule? It is a steroid It might trigger a signal cascade that causes some effect in a cell Its receptor is located in the cytosol of the target cell Since it can enter the cell, it directly affects some specific cell process It is a steroid It might trigger a signal cascade that causes some effect in a cell Its receptor is located in the cytosol of the target cell Since it can enter the cell, it directly affects some specific cell process ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The major second messengers are All of these cGMP DAG cAMP All of these cGMP DAG cAMP 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 bind to cell surface receptors to trigger chemical cascades never enter the blood of humans are hydrophilic and so cannot penetrate the plasma membrane are made in one location of the body but have their effects some distance away bind to cell surface receptors to trigger chemical cascades never enter the blood of humans are hydrophilic and so cannot penetrate the plasma membrane ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The binding of ligands to many G-proteins linked receptors leads to shortlived decrease in the concentration of certain extracellular signaling molecules called first messenger increase in the concentration of certain extracellular signaling molecules called first messenger increase in the concentration of certain intracellular signaling molecules called second messenger decrease in the concentration of certain intracellular signaling molecules called second messenger decrease in the concentration of certain extracellular signaling molecules called first messenger increase in the concentration of certain extracellular signaling molecules called first messenger increase in the concentration of certain intracellular signaling molecules called second messenger decrease in the concentration of certain intracellular signaling molecules called second messenger ANSWER DOWNLOAD EXAMIANS APP
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