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AP Biology - Chapters 11 and 12 flashcards Flashcards

This is a set of ALL of the bolded terms in both chapters 11 and 12 of the Campbell biology book. All terms are in order from the Campbell book. If you have any questions or comments, or problems with the set, let me know. Enjoy, and good luck on the test.

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724847255signal-transduction pathwaythe process by which a signal on a cell's surface is converted into a specific cellular response0
724847256local regulatora substance that influences cells in the vicinity1
724847257hormonesmolecules that carry signals for longer distances2
724847258liganda small molecule that specifically binds to a larger one3
724847259G-protein-linked receptora plasma membrane receptor that works with the help of a protein called a G protein4
724847260tyrosine kinasecatalyzes the transfer of phosphate groups from ATP to the amino acid tyrosine on a substrate protein5
724847261tyrosine-kinase receptorsmembrane receptors that attach phosphates to protein tyrosines6
724847262ligand-gated ion channelsprotein pores in the plasma membrane that open or close in response to a chemical signal, allowing or blocking the flow of specific ions, such as Na+ or Ca2+7
724847263protein kinasegeneral name for an enzyme that transfers phosphate groups from ATP to a protein8
724847264protein phosphatasesenzymes that remove phosphate groups from proteins9
724847265second messengerssmall, non-protein, water-soluble molecules or ions - a component of signal transduction that is not a protein10
724847266cyclic AMPis made from ATP by adenylyl cyclase, which then activates another protein, usually protein kinase A11
724847267adenylyl cylaseconverts ATP to cAMP in response to a extracellular signal12
724847268DAGdiacylglycerol - stimulates a response, considered a second messenger13
724847269IP3inositol triphosphate - one case in the book states that IP3 stimulates the release of Calcium from the endoplasmic reticulum (FIG 11.14)14
724847270diacylglycerolthe full form of DAG, this will be memorized (see DAG)15
724847271inositol triphosphatethe full form of IP3, this will be memorized (see IP3)16
724847272scaffolding proteinslarge relay proteins to which several other relay proteins are simultaneously attached17
724847273cell divisionthe reproduction of cells18
724847274cell cyclethe life of a cell from its origin in the division of a parent cell until its own division into two19
724847275genomea cell's endowment of DNA, or genetic information20
724847276chromosomesDNA is packaged into chromosomal packs21
724847277somatic cellsall body cells except the reproductive cells22
724847278How many chromosomes in somatic cells?4623
724847279gametesreproductive cells (not somatic cells)24
724847280How many chromosomes in gametes?2325
724847281chromatinDNA-protein complex in chromosome26
724847282sister chromatidstwo chromatids with identical copies of the chromosome's DNA molecule27
724847283centromerecondensed part of the chromosome28
724847284mitosisthe division of the cell's nucleus29
724847285cytokinesisthe division of the cell's cytoplasm30
724847286mitotic (M) phaseincludes both mitosis and cytokinesis - shortest part of cell cycle31
724847287interphaseduring this phase the cell grows and copies its chromosomes in preparation for cell division - 90% of the cell cycle32
724847288G1 Phasethe initial growth phase33
724847289S Phasecontinues to grow as it copies its chromosomes34
724847290G2 Phasegrows more in preparation for cell division and then divides in M phase35
724847291prophasechromatin become more coiled, the nucleoli disappears, spindle begins to form, centromeres move away from each other36
724847292prometaphasethe second stage of mitosis, in which discrete chromosomes consisting of identical sister chromatids appear, the nuclear envelope fragments, and the spindle microtubules attach to the kinetochores of the chromosomes.37
724847293metaphasethe stage in mitosis or meiosis in which the duplicated chromosomes line up along the equatorial plate of the spindle38
724847294anaphasethe stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle39
724847295telophasethe final stage of mitosis or meiosis, during which a nuclear membrane forms around each set of new chromosomes40
724847296mitotic spindlean assemblage of microtubules and associated proteins that is involved in the movements of chromosomes during mitosis.41
724847297centrosomesmall region of cytoplasm adjacent to the nucleus42
724847298kinetochorea specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape43
724847299metaphase platean imaginary plane during metaphase in which the centromeres of all the duplicated chromosomes are located midway between the two poles44
724847300cleavagethe process by which cytokinesis occurs45
724847301cleavage furrowthe first sign of cleavage in an animal cell; a shallow groove in the cell surface near the old metaphase plate46
724847302cell platea double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis47
724847303binary fissiona form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size48
724847304origin of replicationsite where the replication of a DNA molecule begins, consisting of a specific sequence of nucleotides49
724847305cell cycle control systema cyclically operating set of molecules in the cell that both triggers and coordinates key events in the cell cycle50
724847306checkpoint (cell cycle)critical control point where stop and go-ahead signals can regulate the cycle51
724847307cyclinone of a family of closely related proteins that regulate the cell cycle in eukaryotic cells - gets its name from its cyclic nature of concentration52
724847308cyclin-dependent-kinasesenzyme to which cyclin binds during interphase and mitosis, triggering and controlling activities during the cell cycle - (CDks)53
724847309growth factora protein released by certain body cells that stimulates other cells to divide54
724847310density-dependent inhibitionthe phenomenon observed in normal animal cells that causes them to stop dividing when they come into contact with one another55
724847311anchorage dependencethe requirement that to divide, a cell must be attached to a solid surface56
724847312transformation (cancer)the process that converts a normal cell into a cancer cell57
724847313tumora mass of abnormal cells that develop when cancerous cells divide and grow uncontrollably within normal tissue58
724847314benign tumora mass of abnormal cells that remains at the site of origin59
724847315malignant tumora cancerous tumor that is invasive enough to impair the functions of one or more organs60
724847316metastasisthe spreading of a disease to another part of the body61
724847317Shreyas TallamrajuGreatness62

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