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higher human biology Unit 1(a,b,c)
06/11/2022
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the nudeus afa germline Stem cell candivide this maintains the diptoid by milosis chromasones number piplad germline cells have 23 pails of homolcoeus chromosone's Division by mitosis ingermline stem cellsproducesmore diploid germine Stem cells germline cells are the only cells that can carry out both mitosis to produce more dipi- odge mune stem cells and meosis to produce haploid gametes they are the only cells that carry out meosi s Somatic cells a samatic cellis anycetl Other than cells involved in reproduction Somatic cells are not involved in reproduction Germline cells germline cells are Division and differentation gamerm and egg (an) In Human cells cells the stem cells that divide to form these gametes (sperm tova) are also germline Cells a samatic cellis any Cell in the body other than the cells in the reproductive cells are game tes and germline include Sperm and egglava) cells the stem cells that devide to form these gametes are also germline cells. 1.1 a.) (11(B) Tissue cells are multipoten) Cellular dipperentation Tissue stem cells - tissue stem cells are involved un growth and repair and renewel of cells found in that type of tissue.e.g. a variety of skin stem cells are needed to maintain +repair our skin on a daily basis. the human body 19 mock up of many spesialized cells that perform specific function Cellular differentations is the process by which acell expresses (switches on) certain genes to produce proteins needed for that particular type of cell fissue stem cells can only differenciate and specialise into all of the types of cell found in a particular tissue type only this allows cells te carryout a function specialized Embryonic stem...
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Alternative transcript:
cells -cells th the very early embryo candipperentielle and specialise into all of the ce'll types that make up the cell type that make up the individual, they're pluripotent all of the genes in embryonic Stem cells can be expressed to allow these cells to differ- -entiate and specialise into any cell type Research stem cells - under the right conditions, embryonic stem cells can selfrenew in the labatory. this allows Scientists to use them for research purpouses. Stem cells can be used as model cells to study now disease develops TIC Therapeutic +reaserch Uses of Stemcells They provide info on how cellular processes such as cell growth, differentation and gene regulation work. used as modelcells for testing drugs. therapeutic stem cells therapuetic uses involve the Repair of damaged or diseased organs or tissues Do Not talk about diseased or damaged cells, must say organs or tissus. currently used for :- ~Repair of damaged or diseased organs or tissues eg. To repair corneal damage in the eye eg. To replace and regenerate damaged skin Ethnical debate of embryonic stem cells uses for embryonic stem cells can offer effective treatments for disease and injury. important & -However embryonic stem cell use involves the distruction of embayo