Compozitia celulei ...tlangnp2057tlangfenp1033 tsbasedon0 tsnext16 Body TextSSIttrsidtbl trsid11231731trsid13042112SIttgenerator Microsoft ord 10.0.2627SItinfoIttitle ALINSItauthor ALINSItoperator DanielSItcreatimtyr2002tmo5tdy15thr21tmin12SItrevt imtyr2002tmo5tdy15thr21tmin12SItversion2SItedmins0S Itnofpages4SItnofords993SItnofchars5663SIttcompany PERSONALSItthlinkbase http.referat.roSItnofcharss6643SItvern16437SStpape r11906tpaperh16838tmargl1417tmargr1417tmargt1417tma rgb1417tltrsect tidoctrltftnbjtaenddoctnoxlattoyentexpshrtntnoultr lspctdntblnsbdbtnospaceforulthyphcaps0tformshadetho rzdoctdgmargintdghspace180tdgvspace180tdghorigin141 7tdgvorigin1417tdghsho1tdgvsho1tjexpandtviekind1tvi escale100tpgbrdrheadtpgbrdrfoottsplytninetftnlytnin ethtmautsptnolnhtadjtbltuseltbalntalntblindtlytcalc tbldtlyttblrtgrtlnbrkruletrsidroot11231731 tfet0tltrpar tsectd tltrsecttlinex0theadery708tfootery708tcolsx708tend nheretsectlinegrid360tsectdefaultcltsftnbj Ittpnseclvl1tpnucrmtpnqctpnstart1tpnindent720tpnha ng Itpntxta .SSIttpnseclvl2tpnucltrtpnqctpnstart1tpnindent720t pnhang Itpntxta .SSIttpnseclvl3tpndectpnqctpnstart1tpnindent720tpn hang Itpntxta .SSIttpnseclvl4tpnlcltrtpnqctpnstart1tpnindent720t pnhang Itpntxta SSIttpnseclvl5tpndectpnqctpnstart1tpnindent720tpnh ang Itpntxtb SItpntxta SSIttpnseclvl6tpnlcltrtpnqctpnstart1tpnindent720tp nhang Itpntxtb SItpntxta SSIttpnseclvl7tpnlcrmtpnqctpnstart1tpnindent720tpn hang Itpntxtb SItpntxta SSIttpnseclvl8tpnlcltrtpnqctpnstart1tpnindent720tp nhang Itpntxtb SItpntxta SSIttpnseclvl9tpnlcrmtpnqctpnstart1tpnindent720tpn hang Itpntxtb SItpntxta SStpardtplain tltrparts15tqc tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs24talang1025 tltrchtfcs0 tbtf36tfs28tlang2057tlangfe1033tcgridtlangnp2057tl angfenp1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tcf1tinsrsid11231731tcharrsid11231731 CompozitiA ChimicA A CeluleItpar Stpardtplain tltrpartqc tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 trtlchtfcs1 taf0tafs24talang1025 tltrchtfcs0 tfs24tlang2057tlangfe1033tcgridtlangnp2057tlangfen p1033 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tinsrsid11231731tcharrsid11231731 tpar Stpardtplain tltrparts16tql tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs24talang1025 tltrchtfcs0 tbtf37tfs28tlang2057tlangfe1033tcgridtlangnp2057tl angfenp1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tcf1tinsrsid11231731tcharrsid11231731 tpar tpar Stpard tltrparts16tql tfi720tli0tri0tsb120tsa120tidctlpartaspalphataspnu mtfaautotadjustrighttrin0tlin0titap0 Itrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tcf1tinsrsid11231731tcharrsid11231731 Cercetarile privitoare la compozitia chimica a celulei au scos in evidenta faptul ca toate elementele identificate in celulele organismelor se gasesc si in afara acestora, adica in mediul natural.Dar ,spre deosebire de acesta, in celulele vii elementele chimice se gasesc in concentratii diferite.Acest fapt se datoreste capacitatii invelisurilor celulare de a selecta numai acele elemente necesare desfasurari metabolismuli cellular.tpar Stpardtplain tltrpartql tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 trtlchtfcs1 taf0tafs24talang1025 tltrchtfcs0 tfs24tlang2057tlangfe1033tcgridtlangnp2057tlangfen p1033 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tinsrsid11231731tcharrsid11231731 ttab SItrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 Peste 95 din masa celulei este reprezentata de 4 elementeoxygen,carbon,hydrogen si azot. Alte cateva procente sunt reprezentate de CA,P,K,S,Na,Fe,Mg,Cl,Cu, s.a.tpar Stpard tltrpartql tfi720tli0tri0tsb120tsa120tidctlpartaspalphataspnu mtfaautotadjustrighttrin0tlin0titap0 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 Dupa modelul de participare la alcatuirea substantei vii, elementele chimice au fost inpartite intpar Stpard tltrpartql tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 ttab tbullet macroelementeO,C,H,N,P,K,Ca,S,Mg,Fe,Na,Cl,Altpar ttab tbullet microelementeMn,B,Sr,Cu,Ti,Zn,Si,Bo,Br,F,Rb,Sn,Nit par Stpard tltrpartql tfi720tli0tri0tsb120tsa120tidctlpartaspalphataspnu mtfaautotadjustrighttrin0tlin0titap0 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 Acestea se afla in proportii cuprinde intre miimi de procente,zecimi de miimi de procente si sutimi de miimi de procent.tpar Stpard tltrpartql tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 ttab tbullet ultramicroelementeAs,Mo,Co,I,Pb,Hg,Ag,Au,Ratpar Stpard tltrpartql tfi720tli0tri0tsb120tsa120tidctlpartaspalphataspnu mtfaautotadjustrighttrin0tlin0titap0 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 Aceestea se afla in proportii infime,de ordinul milionimilor de procent.tpar Micro- si ultramicroelementele, participand in proportii atat de mici in viata celulei, au fost denumite oligoelemente.tpar Elementele chimice din celula vie nu sunt independente ci sub forma de compusi sau substante organice si anorganice.tpar Stpard tltrpartql tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 tpar Stpardtplain tltrparts1tqc tli0tri0tsb120tsa120tkeepntidctlpartaspalphataspnu mtfaautotoutlinelevel0tadjustrighttrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs24talang1025 tltrchtfcs0 tbtf37tfs28tlang2057tlangfe1033tcgridtlangnp2057tl angfenp1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tf0tfs24tcf1tlang1036tlangfe1033tlangnp1036tinsrsi d11231731tcharrsid11231731 Principalii compusi chimici din celula vietpar Stpardtplain tltrpartql tli0tri0tsb120tsa120tidctlpartaspalphataspnumtfaau totadjustrighttrin0tlin0titap0 trtlchtfcs1 taf0tafs24talang1025 tltrchtfcs0 tfs24tlang2057tlangfe1033tcgridtlangnp2057tlangfen p1033 Itrtlchtfcs1 taf0 tltrchtfcs0 tcf1tlang1036tlangfe1033tlangnp1036tinsrsid1123173 1tcharrsid11231731 tpar Stpard tltrpartql tfi720tli0tri0tsb120tsa120tidctlpartaspalphataspnu mtfaautotadjustrighttrin0tlin0titap0 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 Din punc de vedere al compozitiei moleculare,o celula vie este alcatuita din apa,proteine,lipide,glucide, acizi nucleici si alte molecule organice si anorganice,conform tabelului de mai jos.tpar Stpard tltrpartql tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 Itrtlchtfcs1 tabtaf0 tltrchtfcs0 tbtcf1tlang1036tlangfe1033tlangnp1036tinsrsid11231 731tcharrsid11231731 tpar tpar tpar tpar Sttrod tiro0tiroband0tltrrotts11ttrqcttrgaph108ttrleft-10 8ttrbrdrttbrdrstbrdr10 ttrbr... 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