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Cell Communication - AP Biology Flashcards

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5649972694ligandbinds to the receptor on the plasma membrane0
5649972695kinasea protein involved in signal transduction that activates other molecules by adding a phosphate group to them1
5649972696phosphorylation cascadeA phosphorylation cascade is a sequence of events where one enzyme phosphorylates another, causing a chain reaction leading to the phosphorylation of thousands of proteins. This can be seen in signal transduction of hormone messages2
5649972697receptionfirst of the three stages of cell signaling3
5649972698transductionsecond of the three stages of cell signaling4
5649972699responselast of the three stages of cell signaling5
5649972700g-proteinsalso known as guanine nucleotide-binding proteins, are a family of proteins that act as molecular switches inside cells, and are involved in transmitting signals from a variety of stimuli outside a cell to its interior6
5649972702ligand-gated ion channelsare a group of transmembrane ion channel proteins which open to allow ions such as Na+, K+, Ca2+, or Cl− to pass through the membrane in response to the binding of a chemical messenger (i.e. a ligand), such as a neurotransmitter7
5649972704The plasma membraneSelectively permeable bilayer8
5649972705blood streamThe path a hormone takes to get to its receptor9
5649972706Cyclic AMP (cAMP)is a second messenger that is important in many biological processes. cAMP is used for intracellular signal transduction in many different organisms10
5649972707Second Messengersmolecules that relay signals received at receptors on the cell surface to target molecules in the cytosol and/or nucleus11
5649972709ApoptosisProgrammed cell suicide12
5649972710phosphataseshow a signal transduction pathway is turned off; inactivates kinases13
5649972713Apoptosis mainly prevents what disease?Cancer14
5649972718the protein kinases and phosphatases are both types of...enzymes15
5649972721transcription factora regulatory protein that binds to DNA, affecting the transcription of specific genes16
5650035570Quorum sensinga system of communication among bacteria that uses population density17
5651436327Evolution and cell communicationSimilar cell signal pathways are seen in diverse organisms; evidence that18

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