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Unit 4

AP Biology/ Unit 4 Vocabulary- Gonzalez G.

TermDefinition
Target Cell Target
Ligand Ligand
Phosphorylation The process of generation ATP from ADP and phosphate by means of chemiosmosis, using a proton-motive force generated across the thylakoid membrane of the chloroplast or the membrane of certain prokaryotes during the light reactions of photosynthesis
Receptor Protein Receptor
Secondary Messenger A small, nonprotein, 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 molecules bound by a signal receptor protein
Signal Amplification Amplification
Signal Transduction The linkage of a mechanical, chemical, or electromagnetic stimulus to a specific cellular response
Response the change in a specific cellular activity brought about by a transduced signal form outside the cell
Feedback Feedback
Negative Feedback A form of regulation in which accumulation of an end product of a process slows the process; in physiology, a primary mechanism of homeostasis, whereby that counteracts the initial change.
Positive Feedback A form of regulation in which an ends product of a process speeds up that process; a control mechanism in which a change in variable trigger a response that reinforces or amplifies the change
Asexual Reproduction Reproduction
Cell Cycle An ordered sequence of events in the life a cell, form its origin in the division into two
Interphase Interphase
Mitosis A process of nuclear division in eukaryotic cells conventionally divided into five stages
Cancer Cancer
Cyclin A cellular proteins that occurs in a cyclically fluctuating concentration and that plays an important role in regulating the cell cycle
Created by: genavi27
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