Paragraphs 5 and 6 explain that calcium does not affect this pathway the researchers have discovered. Paragraph 10 explains why this work is important. It involves vesicles. Explain what vesicles have to do with nerve function. Ten questions 8 points each Second messenger enzymes would be the enzymes involved in a cascade triggered by cAMP after a ligand binds to a receptor on the cell surface.
Ion channels are proteins on the cell surface that open to allow ions to pass through.
The lamprey is being used because the synapse is big. The neurotransmitter being studied is serotonin. Vesicles that are in the axon bulb contain the neurotransmitters that are released when the signal is sent. Serotonin is a neurotransmitter that controls behavior. Low amounts increase aggressive behavior and high amounts lower aggressive behavior.