BIOL 111 Chapter Notes - Chapter 11: Tyrosine Kinase, Signal Transduction, Paracrine Signalling
Document Summary
During development, cell communication helps cells determine what they will become. Apoptosis : cell signaling that regulates programmed cell death. Programmed death to keep other cells safe. End of lifespan: ex. when skin between fingers in embryo is killed to create digits. Long distance : cells anywhere in the body. Cell junctions : cells that often work together, like groups of muscle cells, will be connected via gap junctions (animal cells) and plasmodesmata (plant cells) to allow signals to pass quickly. Cell-cell recognition : important during development and in immune system. Paracrine signaling: secreted molecules travel short distance to function. Synaptic signaling : secreted molecules travel a short distance, nerve cells, triggered by electric response (from neuron), use neurotransmitters to create messages/signal a specific response. Growth factors: signals that tell or cells to grow and divide, signaled between cells. Reception : a signaling molecule binds to a receptor protein, causing it to change shape.
