Chapter 11
Cell suicide
Apoptosis
Lysis of the cell
Apoptosis involves all but the following
Ligand gates ion channel
Binding of a signaling molecule to which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane
cAMP
Consider this pathway: epinephrine to G protein coupled receptor to G protein to adenylyl Cyclase to cAMP. Identify the second messenger
Intercellular receptors are present only in target cells
Lipid-soluble signaling molecules, such as testosterone, cross the membranes of all cells but affect only target cells because
They amplify the original signal manyfold
Phosphorylation cascades involving a series of protein synthesis kinases are useful for cellular signal transduction because
Activation of G-protein-coupled receptors
Protein phosphorylation is commonly involved with all of the following except
Dimerization and phosphorylation
The activation of receptor tyrosine kinases is characterized by
Amplifies a signal
What does a phosphorylation cascade do
Glycogen breakdown was observed only when epinephrine was administered to intact cells
Which observation suggested to Sutherland the involvement of a second messenger in epinephrines effect on liver cells