PLEASE HELP ME When a neurotransmitter (ligand) binds to the ligand-gated ion channel of a postsynaptic neuron, the shape of the channel protein , allowing ions to flow the cell. These ions are messengers that perpetuate the signal transduction of the nerve signal.

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Why did the federal government end its support of yucca mountain as a site for long-term storage of nuclear water

What organs comprise the respiratory system of a bird