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

interphase

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