Kev Kawm Ntawv:, Science
CO2 tsim nyog rau cov nroj tsuag dab tsi? Yuav ua li cas los ua pov thawj qhov xav tau rau CO2?
Kev lig kev cai, nws ntseeg tau tias oxygen yuav tsum muaj rau cov kab mob nyob hauv. Yog li ntawd, nws yog ib qho txaus txaus los nyeem lub npe ntawm tsab xov xwm "CO2 yog tsim nyog rau cov nroj tsuag rau ...". Cov lus teb rau no puzzle yog hauv qab no.
Carbon dioxide thiab nws cov khoom
Carbon dioxide, carbon anhydrite, carbon dioxide - yog cov npe ntawm cov tib substance. Qhov no yog txhua yam paub carbon dioxide. Nyob rau hauv ib txwm ua, cov tshuaj no yog nyob rau hauv lub xeev gaseous, thaum nws tsis muaj xim thiab tsw. Raws li qhov kub ntawm huab cua txo, cov carbon dioxide tawv thiab ua dawb. Nyob rau hauv no cov kev hloov kho, nws yog hu ua "cov nab kuab qhuav". Nws yog ib qho tseem ceeb heev. Cov tshuaj carbon dioxide reacts nrog cov hlau, oxides thiab alkalis. Nws yog peev xwm tsim ib qho tsis ruaj tsis khov nrog hemoglobin ntawm cov ntshav, zoo li oxygen. Qhov no yog qhov yuav pauv roj li cas nrog kev pab los ntawm lub cev. Nws tsis yog ib qho tshuaj lom neeg, tab sis nyob rau hauv cov qib siab nws raug xa mus rau cov pa roj carbon monoxide.
Nyob rau hauv cov xwm, nws yog tsim los ntawm kev ua pa ntawm muaj sia nyob, rotting thiab hlawv. Nyob rau hauv lub xeev gaseous, carbon dioxide dissolves nyob rau hauv dej. Yog vim li ntawd, nws yog ib qho ua tau los tham txog CO2 cov khoom nyob hauv cov dej hlav nrog rau cov nroj tsuag thiab lawv xav tau lub neej zoo li algae. Muaj carbon dioxide thiab muaj qhov tseem ceeb. Nws yog dav siv nyob rau hauv kev lag luam ua noj ua ib lub ci ci thiab txhuam. Nyob rau hauv ib qho dej txias, lawv muaj cov hluav taws tua hluav taws thiab cov tua hluav taws tua hluav taws tsis siv neeg.
Dab tsi yog photosynthesis
Ua ntej txhua yam, CO2 yuav tsum siv rau cov nroj tsuag ntws los ntawm tus txheej txheem tseem ceeb uas muaj qhov tseem ceeb ntawm lub ntiaj teb - photosynthesis. Nyob rau hauv nws cov hoob kawm, ib tug qabzib carbohydrate yog tsim los ntawm ib tug xov tooj ntawm cov tshuaj inorganic. Nws yog siv los ntawm cov nroj tsuag rau kev noj haus, kev loj hlob, kev loj hlob thiab lwm yam ntawm lub neej. Ntxiv rau, lwm cov khoom ntawm cov tshuaj tiv thaiv no yog oxygen - qhov yooj yim rau lub neej ntawm tag nrho cov nyob quavntsej hauv ntiaj chaw, vim nws yog qhov yuav tsum tau rau kev ua pa. Pauv txauv nyob rau hauv cov nroj tsuag yog ua tau vim muaj lub xub ntiag ntawm cov ntaub so ntswg ntawm lawv cov nplooj ntawm tshwj xeeb formations - stomata. Txhua ntawm lawv muaj ob nplooj ntawv. Nyob hauv qee kis, lawv kaw thiab qhib. Los ntawm lawv los ntawm qhov khiav ntawm ob qho pa thiab carbon dioxide.
Tej yam xwm rau qhov tso cai ntawm photosynthesis
Photosynthesis tshwm sim hauv cov qauv tshwj xeeb ntawm cov ntaub ntawv tseem ceeb thiab cov lej ntawm daim nplooj. Lawv raug hu ua chloroplasts. Lawv nrog txheem hais stroma thiab thylakoids gran, uas yog ib tug colorant - xim chlorophyll. Nws muab qee qhov chaw ntawm cov nroj tsuag muaj xim ntsuab. Nyob rau hauv horoplast, photosynthesis tshwm sim tsuas yog nyob rau hauv tej yam kev mob. Qhov no yog qhov muaj lub hnub ci, dej thiab carbon dioxide. Thiab qhov tshwm sim ntawm cov tshuaj tiv thaiv no yog tsim los ntawm cov organic teeb meem ntawm cov piam thaj thiab cov pa oxygen. Cov Thawj zaug ntawm lawv - qhov ntawm lub neej ntawm cov nroj tsuag lawv tus kheej, thiab lub thib ob siv cov so rau ua tsis taus pa. Qhov no txoj kev muaj ib tug planetary tseem ceeb.
Cov tshuaj carbon dioxide thiab cov nroj tsuag
Yuav ua li cas los ua pov thawj qhov xav tau rau CO2? Nws yooj yim heev. Txij li thaum carbon dioxide raug tso tawm los ntawm kev ua pa, nws tsis muaj qhov xwm txheej. Txawm li cas los xij, hauv dej thoob dej yug ntses nws tsis yog vim ntau hom me me ntawm cov kab tsuag tsiaj. Yog li ntawd, yog tias tshwj xeeb nqis yog tsis siv rau muab cov pa roj carbon dioxide, thaum lub sij hawm nws yog tus nqi txaus rau intensive txaus ntawm photosynthesis. Tom qab tag nrho, CO2 yog tsim nyog rau cov nroj tsuag los ua cov khoom noj rau lawv tus kheej. Timely thiab tsis tu ncua cov pa roj carbon dioxide nyob rau hauv dej yuav yog qhov uas koj cov thoob dej yug ntses yuav tsum tau muaj cov lus qhia thiab qaim algae.
Cov roj siv rau cov nroj tsuag ua pa: qhov tseem ceeb ntawm cov pa oxygen
Nws hloov tawm hais tias raws li lawv cov hauj lwm tseem ceeb, cov nroj tsuag tso pa oxygen, thiab tsis nqus nws. Ces lo lus nug tshwm sim: ua li cas lawv ua pa, thiab feem ntau lawv puas muaj cov txheej txheem oxidation thiab splitting ntawm cov organic? Ntawm chav kawm, zoo li tag nrho lwm cov kab mob nyob hauv, lawv siv tib cov pa. Nws hloov tawm hais tias nyob rau hauv cov nroj tsuag ib txhij ob ob yam tseem ceeb txawv kev tshwm sim. Qhov no yog photosynthesis thiab ua pa. Txhua ntawm lawv yog tsim nyog rau lub neej zoo ntawm cov nroj tsuag.
Photosynthesis thiab pa nchav: dab tsi tseem ceeb
Lub uniqueness ntawm cov nroj tsuag lies nyob rau hauv qhov tseeb hais tias lawv yog tib lub neej uas secrete ob qho tib si oxygen thiab carbon dioxide suab ib txhij. Tab sis qhov no tsis txhais hais tias lawv yog cov txaus ntshai thiab lawv tuaj yeem tsis nyob hauv qhov chaw nyob. Qhov zoo tshaj plaws yog tias cov pa oxygen tau ua ntau dua los ntawm oxygen dua carbon dioxide.
Yuav kom tsis txhob ua txhaum txoj cai no, nws yog qhov yuav tsum tau soj ntsuam cov txheej txheem ntawm cov txheej txheem no. Piv txwv, yog tias tshav ntuj tsis nkag mus rau hauv ib chav hauv nrog sab hauv nroj tsuag, photosynthesis tsis tshwm sim. Nyob rau tib lub sij hawm, qhov tsim ntawm qabzib nres. Tab sis, txoj kev ua pa yuav mus ntxiv. Nyob rau hauv cov huab cua, ib tug loj npaum li cas carbon dioxide accumulates. Thiab nyob rau hauv cov ntaub ntawv no, nroj tsuag yuav ua kev txaus ntshai. Thaum kawg, ob qho tib si no yog qhov tseem ceeb heev. Tsuas yog vim cov pa nroj tsis ua pa, thiab nrog kev pab ntawm cov roj carbon dioxide tsim qabzib thiab pub.
Yog li ntawd, CO2 yog tsim nyog rau cov nroj tsuag kom ua tiav cov txheej txheem ntawm kev muab cov tshuaj muaj roj - photosynthesis, uas yog qhov tseem ceeb ntawm lub ntiaj teb.
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