Cell Signalling and Transduction Which of the following statements about G proteins is false? 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 They become activated when bound to GDP ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction SH2 domains specifically bind to phosphorylated serine residues GDP Ca2+ phosphorylated tyrosine residues phosphorylated serine residues GDP Ca2+ phosphorylated tyrosine residues 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 integration Signal transduction Signal amplification Signal reception Signal integration Signal transduction Signal amplification Signal reception ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction The hormone or ligand can be considered as second messenger both (a) and (b) first messenger none of these second messenger both (a) and (b) first messenger none of these 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 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 It is a steroid It might trigger a signal cascade that causes some effect in a cell ANSWER DOWNLOAD EXAMIANS APP
Cell Signalling and Transduction Which of the following comes under the category of cell surface receptor? G protein linked receptors Ion-channel linked receptors Enzyme linked receptors All of these G protein linked receptors Ion-channel linked receptors Enzyme linked receptors All of these ANSWER DOWNLOAD EXAMIANS APP
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