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IB2 Bio Unit 1

Microscopy Math & Cell Division

TermDefinition
Field of View (FOV) The diameter of the circle seen under a microscope
Stem Cells Cells that retain the ability to divide and differentiate into various types of cells
Multipotent Able to give rise to multiple cells within a lineage
Pluripotent Able to give rise to all cell types in an adult
Totipotent Able to give rise to all embryonic and adult kineages
Cyclins Control cell cycle
Proto-oncogenes Encodes proteins to stimulate cell division, stop cell differentiation, & halt cell death
Oncogenes Increases production of proteins to increase cell devision, differentiation, and death; cancer cells
Mitosis: Prophase Centrioles divide & nuclear membrane disappear
Mitosis: Metaphase Chromosomes line up and attach to spindle fibers
Mitosis: Anaphase Chromosome pairs split and move apart
Mitosis: Telophase Nuclear membrane forms around separated chromosomes
Chiasmata Evidence of exchange between chromatids
Nondisjunction Failure of homologous pairs of chromosomes to separate properly during meiosis
Trisomy 3 copies of one chromosome type; ex. down syndrome
Monosomy 1 copy of chromosome type; ex. Turner's syndrome
Created by: bellaw777
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