BIOA01H3 Lecture Notes - Lecture 6: S Phase, Microfilament, Post-Translational Modification

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BIOA01H3 Full Course Notes
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BIOA01H3 Full Course Notes
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Eukaryotes: genome large and liner, dna is nucleus the ti(cid:373)e (cid:271)et(cid:449)ee(cid:374) t(cid:449)o su(cid:272)(cid:272)essi(cid:448)e m phases. M phase (cid:894)appro(cid:454). (cid:1006) hr. (cid:895: pare(cid:374)t (cid:272)ell di(cid:448)ides i(cid:374)to t(cid:449)o daughter (cid:272)ells. I(cid:374)terphase (cid:894)(cid:1005)(cid:1004)-(cid:1005)8 hr. (cid:895): (cid:449)hi(cid:272)h i(cid:374)(cid:272)ludes dna s(cid:455)(cid:374)thesis (cid:894)repli(cid:272)atio(cid:374) (cid:449)he(cid:374) dna dou(cid:271)les i(cid:374) the (cid:374)u(cid:272)leus(cid:895) a(cid:374)d a(cid:374) i(cid:374)(cid:272)rease i(cid:374) the (cid:272)ell size so that ea(cid:272)h daughter (cid:272)ell re(cid:272)ei(cid:448)es suffi(cid:272)ie(cid:374)t a(cid:373)ou(cid:374)ts of (cid:272)(cid:455)toplas(cid:373)i(cid:272) a(cid:374)d (cid:373)e(cid:373)(cid:271)ra(cid:374)e (cid:272)o(cid:373)po(cid:374)e(cid:374)ts. G(cid:1005) phase: the first (cid:862)gap(cid:863) phase, size a(cid:374)d protei(cid:374) (cid:272)o(cid:374)te(cid:374)t of the (cid:272)ell i(cid:374)(cid:272)reases i(cid:374) preparatio(cid:374) for the phase, (cid:373)a(cid:374)(cid:455) regulator(cid:455) protei(cid:374)s are (cid:373)ade/ a(cid:272)ti(cid:448)ated. Phase: dna s(cid:455)(cid:374)thesis, e(cid:374)tire dna (cid:272)o(cid:374)te(cid:374)t i(cid:374) the (cid:374)u(cid:272)leus is repli(cid:272)ated. G(cid:1004) phase: disti(cid:374)guished fro(cid:373) the g(cid:1005) phase the (cid:272)ell prepares for (cid:373)itosis a(cid:374)d (cid:272)(cid:455)toki(cid:374)esis there is (cid:374)o a(cid:272)ti(cid:448)e preparatio(cid:374) for (cid:272)ell di(cid:448)isio(cid:374), prese(cid:374)t i(cid:374) (cid:272)ell t(cid:455)pes that do (cid:374)ot a(cid:272)ti(cid:448)el(cid:455) di(cid:448)ide. e. g. li(cid:448)er (cid:272)ells, (cid:374)er(cid:448)e (cid:272)ells, Chromosome in eukaryotic cells: dna is organized with histone and other proteins into chromatin, package to form the chromosomes.

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