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Physio (adamson) ch2

Chapter 2 terms

QuestionAnswer
Enzyme protein catalyst that accelerates specific chemical reactions but does not itself undergo net chemical change during the reaction
Carriers integral membrane protein that mediates passage of molecule through membrane;
Ligand any molecule or ion that binds to protein surface by noncovalent bonds
Receptor specialized peripheral ending of afferent neuron, or separate cell intimately associated with it, that detects changes in some aspect of environment; specific binding site in plasma membrane or interior of target cell with which a chemical messenger
Binding the act of fastening, securing, uniting, or the like.
Affinity strength with which ligand binds to its binding site
Second messenger intracellular substance that serves as relay from plasma membrane to intracellular biochemical machinery, where it alters some aspect of cell’s function
First messenger extracellular chemical messenger
Created by: xsavier1
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