3. Leaving cert Biology Cell division

$cell continuity-$ all cells develop from pre existing cells that involve growth, synthesis and reproduction

$chromosomes-$ composed of Dna and protiens

$gene-$ a short section of dna

$haploid -$ a cell that has one set of chromosomes

$diploid-$ a cell that has 2 pairs of chromasomes in the nucleus

cell cycle

• discribes the life cycle of the cell
• interphase- when cells are not dividing
• mitiosis - when cells divide

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interphase

• when cells are not dividing
• longest phase in the cell cycle
• chromosome elongated chromoantitn
• new mitiochondira forms
• chloroplants are produced
• duplication of chromosomes

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