Dissimilation - qhov no ... Cov kauj ruam dissimilation

Dissimilation - ib tug complex tshuaj nyob rau hauv uas yog ib tug gradual decomposition ntawm complex organic tebchaw mus yooj yim. Qhov no tus txheej txheem no nrog qhov kev tso tawm ntawm lub zog, ntau ntawm cov uas yog siv nyob rau hauv ATP synthesis.

Dissimilation hauv ib

Dissimilation txheej txheem yog opposite rau assimilation. Raws li pib tshuaj yuav raug lwj, ua nucleic acids, cov nqaijrog, nqaijrog thiab carbohydrates. Ib tug zaum kawg khoom - dej, carbon dioxide thiab ammonia. Lub decomposition khoom ntawm tsiaj lub cev nrog lub tsheb txhob sibtsoo txuam nrog tawm rau sab nraum. Thiab cog carbon dioxide yog tso tawm cov thiab tag nrho ammonia siv nyob rau hauv tus txheej txheem ntawm assimilation, liab li lub pib cov ntaub ntawv uas rau biosynthesis ntawm cov organic tebchaw.

Cov kev sib raug zoo dissimilation thiab assimilation tso cai cov ntaub so ntswg ntawm lub cev yog lossi tshiab. Piv txwv li, rau 10 hnub nyob rau hauv tib neeg cov ntshav albumin tshiab ib nrab lub hlwb, thiab rau 4 lub hlis tshiab tag nrho erythrocytes. cov kev siv piv ntawm ob yam txawv metabolic dab nyob ntawm ntau yam tseem ceeb. Qhov no theem ntawm kev loj hlob ntawm tus kab mob, thiab lub hnub nyoog thiab physiological lub xeev. Thaum lub sij hawm txoj kev loj hlob thiab kev loj hlob ntawm lub cev assimilation prevails, ua daim ntawv cov hlwb tshiab, ntaub so ntswg thiab kabmob yog lawv ntau yam, uas yog, lub cev loj nce. Nyob rau hauv cov ntaub ntawv ntawm pathologies thiab yoo mov dissimilation txheej txheem dominates assimilation thiab txo lub cev hnyav.

Suam ntawm cov kab mob no nyob rau hauv cov xwm dissimilation

Tag nrho cov muaj tus kab mob muaj peev xwm yuav muab faib ua ob pawg, nyob ntawm seb tus mob nyob rau hauv uas lub proceeds dissimilation. Nws yog aerobic thiab co kab mob. Tus thawj yuav tsum tau free oxygen, lub tom kawg yuav tsum tau tsis sim nws rau lub neej. Thaum co dissimilation los ntawm fermentation nyaij, uas yog ib qho oxygen-free enzymatic zom cov zaub mov ntawm cov organic teeb meem mus rau hauv yooj yim. Piv txwv li, lactic los yog dej fermentation.

Cov qib dissimilation nyob rau hauv aerobic kab mob: txoj kev npaj theem

Cleavage ntawm cov organic tshuaj nyob rau hauv aerobes nqa tawm nyob rau hauv peb cov kauj ruam. Nyob rau txhua ntawm lawv muaj ntau ntau kev enzymatic tshua.

Tus thawj theem - kev npaj. Lub ntsiab lub luag hauj lwm nyob rau ntawm no theem yog nyob rau hauv multicellular kab mob digestive enzymes nyob rau hauv txoj hnyuv ib ntsuj av. Nyob rau hauv unicellular - lysosomal enzyme. Thaum lub sij hawm thawj theem cov nqaijrog decompose rau hauv amino acids, Sibhawm tsim glycerol thiab fatty acids, polysaccharides decomposed rau hauv monosaccharides, nucleic acid nucleotides.

glycolysis

Qhov thib ob theem ntawm dissimilation - glycolysis. Nws tshwm sim uas tsis muaj oxygen. Lub lom chaw glycolysis yog hais tias nws sawv cev rau lub caij pib ntawm splitting thiab piam thaj oxidation uas ua nyob rau hauv lub dawb zog muab cia rau hauv daim ntawv ntawm ob molecules ntawm ATP. Nws tshwm sim nyob rau hauv ib tug series ntawm sib law liag tshua uas yuav zaum kawg tshwm sim ntawm lub tsim ntawm ib tug qauv ntawm cov zib ob molecules ntawm pyruvate thiab tib tus nqi ntawm ATP. Nws yog nyob rau hauv daim ntawv ntawm cov adenosine triphosphate muab lub zog qhov uas cais raws li ib tug tshwm sim glycolysis so ntawm lub dispersion yuav tsum nyob rau hauv daim ntawv ntawm tshav kub. Tshuaj lom neeg tshua ntawm glycolysis: S6N12O6 2ADF + + + 2F → 2S3N4O3 2ATF.

Nyob rau hauv tej yam kev mob ntawm cov pa deficiency nyob rau hauv cog hlwb thiab nyob rau hauv poov xab hlwb piruvirat phua ua ob yam: ethyl cawv thiab cov pa roj carbon dioxide. Qhov no yog qhov dej fermentation.

Tus nqi ntawm lub zog tso thaum lub sij hawm glycolysis yog tsis txaus rau cov neeg muaj tus kab mob uas ua tsis taus pa oxygen. Uas yog vim li cas cov tsiaj thiab tib neeg thaum muaj kev kub cev tom nyob rau hauv cov nqaij yog tsim lactic acid, ua hauj lwm pab raws li ib tug thaub qab hwj chim qhov twg los thiab accumulates nyob rau hauv daim ntawv ntawm cov lactate. Ib tug yam ntxwv feature ntawm tus txheej txheem no yog lub rov tshwm sim ntawm tus mob nyob rau hauv cov nqaij.

Cov pa oxygen theem

Dissimilation - yog ib tug heev tham cov txheej txheem, cov pa thiab ib tug thib peb theem kuj muaj ob lub tshua. Peb yuav tau tham txog lub Krebs voj voog thiab oxidative ntsev.

Thaum lub sij hawm lub oxidation ntawm cov pa ua tsis taus pa piruvirata rau zaum kawg khoom, uas yog CO2 thiab H2O. Qhov no tawm lub zog muab cia rau hauv daim ntawv ntawm cov 36 ATP molecules. Ces, qhov no qub zog muab lub synthesis ntawm cov organic tshuaj nyob rau hauv ib lub hnab yas screen. Evolutionary tshwm sim ntawm cov kauj ruam no vim tsub zuj zuj ntawm molecular oxygen nyob rau hauv cov cua thiab cov tsos ntawm aerobic kab mob.

Qhov chaw ntawm oxidative ntsev (cellular ua pa) yog internal daim nyias nyias ntawm mitochondria, uas muaj lub molecular transporter nqa cov thauj ntawm electrons rau molecular oxygen. Lub zog ua nyob rau ntawm no theem yog diffuse cov nyob rau hauv daim ntawv ntawm tshav kub, thiab tus so mus txog rau lub tsim ntawm ATP.

Dissimilation hauv ib - nws yog lub zog pauv, ib tug cov tshuaj tiv thaiv uas yog raws li nram no: S6N12O6 + 6O2 → 6SO2 + + 6N2O 38ATF.

Yog li, dissimilation - ib tug txheej ntawm tshua tshwm sim vim cov organic tshuaj uas yuav muaj tau yav tas los tsim los ntawm lub cell, thiab cov dawb oxygen, uas nkag mus rau ntawm lwm puag ncig thaum lub sij hawm respiration.