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Unit 4

AP Biology Unit 4 Vocabulary-Sedano

QuestionAnswer
Target Cell A cell that has a specific receptor for a specific signaling molecule
Ligand A molecule that binds specifically to another molecule, usually a larger one
Phosphorylation The act of adding a phosphate group to a molecule activating it, vice versa
Receptor Protein Receive specific signals, from ligands, that are sent into cell
Secondary Messenger A small, non-protein, water-soluble molecule or ion, such as a calcium ion or cyclic AMP, that relays a signal to a cell's interior in response to a signaling molecule bound by s signal receptor protein
Signal Amplification The intensification/propagation of signaling molecule increasing response
Signal Transduction The linkage of a mechanism, chemical, or electromagnetic stimulus to a specific cellular response
Response A certain action trigger by a signal transduction
Feedback A method of metabolic control
Negative Feedback A form of regulation in which accumulation of an end product of a process slows the process down
Positive Feedback The end product of the reaction enhance/speed up the process of that product
Asexual Reproduction The generation of offspring from a single parent, no fusion of gametes
Cell Cycle An ordered sequence of event in the life of a cell, from its origin in the division of a parent cell until its own division into two
Interphase The period in the cell cycle when the cell is not dividing, chromosomes and organelle duplication plus other things occur during this stage
Mitosis The last stage of the cell cycle where replicated chromosomes are separated into two nucleus and cells, equally
Cancer A disease in which abnormal cells divide uncontrollably and destroy body tissue.
Cyclin A cellular protein that occurs in a cyclically fluctuating concentration and that plats an important role in regulating the cell cycle
Created by: Hector23
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