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Topic: Science
Number of pages / Number of words: 3 / 821
Essay's paper body

cell division

? continuity of life, reproduction of cells

? reproduction

? unicellular organism

? growth

? repair and renew

cell cycle

? life of a cell from origin to division into 2 new daughter cells

mitosis – cell division in somatic cells

somatic cell – all cells in the body besides sex cells

gamete cell – sex cells

? meiosis

exact copy of genetic material, DNA, is passed to daughter cells

? division step – mitosis

cytokinesis – splitting the cytoplasm

dividing cells duplicates DNA

? separates each copy to opposite ends of cell

? splits into 2 daughter cells

? - separates 2 copies so each daughter cell has completely identical copy

? error rate – 1 per 100 million bases

? - 3 million base pairs

? - mammalism genome

? - 30 errors per cell cycle

? - mutation

DNA is organized in chromosomes

? double helix DNA molecule

? associated proteins, histone proteins

? DNA – protein complex – chromatin

? - organized into long thin fiber

centomere – where sister chromatids are held together

after DNA duplication, chromatin condenses

? coiling and folding to make a smaller packages

? - from DNA to chromatin to highly condensed miotic chromosomes

Duplicated chromosome consists of 2 sister chromatids

cell cycle – cell has a life cycle

? cell is formed fro ma mitotic divisions

Interphase

? 90% of cell life cycle

? produce RNA, synthesize proteins

? prepare for duplication if triggered

Characteristic

? nucleus well define

? DNA loosely packed in long chromatin fibers

G1 – normal growth

S- makes DNA

G2 – makes more organelle, prepare for cell division

Mitosis – copying cell's DNA and dividing it between 2 daughter nuclei

mitosis is divided into 4 phases

? prophase

? metapahse

? anaphase

? telophase

Prophase

1...


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cell division

? continuity of life, reproduction of cells

? reproduction

? unicellular organism

? growth

? repair and renew

cell cycle

? life of a cell from origin to division into 2 new daughter cells

mitosis – cell division in somatic cells

somatic cell – all cells in the body besides sex cells

gamete cell – sex cells

? meiosis

exact copy of genetic material, DNA, is passed to daughter cells

? division step – mitosis

cytokinesis – splitting the cytoplasm

dividing cells duplicates DNA

? separates each copy to opposite ends of cell

? splits into 2 daughter cells

? - separates 2 copies so each daughter cell has completely identical copy

? error rate – 1 per 100 million bases

? - 3 million base pairs

? - mammalism genome

? - 30 errors per cell cycle

? - mutation

DNA is organized in chromosomes

? double helix DNA molecule

? associated proteins, histone proteins

? DNA – protein complex – chromatin

? - organized into long thin fiber

centomere – where sister chromatids are held together

after DNA duplication, chromatin condenses

? coiling and folding to make a smaller packages

? - from DNA to chromatin to highly condensed miotic chromosomes

Duplicated chromosome consists of 2 sister chromatids

cell cycle – cell has a life cycle

? cell is formed fro ma mitotic divisions

Interphase

? 90% of cell life cycle

? produce RNA, synthesize proteins

? prepare for duplication if triggered

Characteristic

? nucleus well define

? DNA loosely packed in long chromatin fibers

G1 – normal growth

S- makes DNA

G2 – makes more organelle, prepare for cell division

Mitosis – copying cell's DNA and dividing it between 2 daughter nuclei

mitosis is divided into 4 phases

? prophase

? metapahse

? anaphase

? telophase

Prophase

1...


Essay fragment

General points of the essay

the Cell Phone on the American Way of Life cell Cell Reproduction Stem Cell Technology:The Controversies surrounding Stem Cell Research What Makes You Buy a Cell Phone Cell Division: Mitosis And Meiosis Cell-Penetrating Peptide Conjugates Of Peptide Nucleic Acids (Pna) As Inhibitors Of Hiv-1 Tat-Dependent Trans-Activation In Cells Cells And Cell Theory cell division cell rap Th cell as the basic unit of life The Cell The nucleus Brain of the cell Cell Phone Effects On Life How a Cell Phone Changed My Life

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