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Cell Division
Cell Division
11
Science
7th Grade
01/28/2010

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Term
Cell Division
Definition
the formation of two daughter cells from a single parent cell.
Term
Centriole
Definition
a cylindrical organelle in animals cells that is involved in cell division.
-Centrioles form spindle fibers which seperate chromosomes during cell division.
Term
Centromere
Definition
the part of a chromosome where the chromatid are attached.
-During mitosis, spindle fibers attach to the chromosome at the centromere.
Term
Chromatid
Definition
one or two identical halves of a replicatedvcdhromosome.
Term
Chromatin
Definition
DNA strands in the nucleus durin interphase.
-Chromatin stains dark, making it relatively easy ton see.(The Greek root"Chroma" means "Color".
Term
Chromosomes
Definition
A structure formed from condensed Chromatid.
-Chromosomes consist of two identical chromatids attached at hte centromere, giving them a characteristic "X" shape.
-Chromosomes occur in pairs. Human cells have 23 pairs of chromsomes, or 46 total chromosomes.
Term
Cytokinesis
Definition
the division of the cytoplasm of the cell to form two daughter cells.
Term
DNA
Definition
a molecule that carries genetic information.
-DNA stands for deoxyribonucleic acid.
Term
Interphase
Definition
The period in the cell cycle during which the cell grows, matures, and duplicates genetic information.
Term
Mitosis
Definition
the equal division of the chromosomes into two genetically identical daughter nuclei. Mitosis consistes of 4 stages.
Term
Mitosis
Definition
the equal division of the chromosomes into two genetically identical daughter nuclei. Mitosis consistes of 4 stages.
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