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Nucleus
parts
nuclear envelope (membrane)
houses DNA
chromosomes
sections of DNA
each section - gene
transcription in to mRNA from DNA for Ribosome to translate to protein
functions
reproduction
DNA replication
cell divisions
mitosis
somatic cells (non gametes)
create new cells with 100% of material
3 groups
stabile
normally do not divide
but can divide to recover
labile
constantly dividing quickly
examples
bone marrow (120 days)
epithelial cells (stomach 2 days skin 14 days)
permanent
never divide after completing growth
meiosis
gametes produce
sperm
egg
1/2 of DNA material in sperm/egg
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