Video: Dab tsi yog cov pa luam yeeb dub uas los ntawm hydrothermal vents?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
“ Dub Cov neeg haus luam yeeb "yog cov chimneys tsim los ntawm deposits ntawm hlau sulfide, uas yog dub . "Cov neeg haus luam yeeb dawb" yog cov chimneys tsim los ntawm cov pob zeb barium, calcium, thiab silicon, uas yog dawb. Underwater volcanoes ntawm kis ridges thiab convergent phaj ciam teb tsim kub springs hu ua hydrothermal vents.
Tib neeg kuj nug, dab tsi yog qhov tseem ceeb ntawm cov neeg haus luam yeeb dub rau biology?
Txawm hais tias lub neej yog qhov sib txawv ntawm qhov tob no, cov neeg haus luam yeeb dub yog qhov chaw ntawm tag nrho cov ecosystems. Hnub ci tsis muaj nyob, muaj ntau yam kab mob - xws li archaea thiab extremophiles - hloov cov cua sov, methane, thiab sulfur compounds muab los ntawm cov neeg haus luam yeeb dub mus rau hauv lub zog los ntawm cov txheej txheem hu ua chemosynthesis.
Kuj Paub, dab tsi hydrothermal vents muab? Hydrothermal vents txhawb nqa cov ecosystems tshwj xeeb thiab lawv cov zej zog ntawm cov kab mob hauv dej hiav txwv tob. Lawv pab tswj dej hiav txwv chemistry thiab ncig. Lawv kuj muab ib lub chaw kuaj mob uas cov kws tshawb fawb ua tau kawm txog kev hloov pauv rau dej hiav txwv thiab seb lub neej hauv ntiaj teb tuaj yeem pib li cas.
Kuj paub, tus neeg haus luam yeeb dub yog dab tsi?
A dub haus luam yeeb yog ib hom hydrothermal vent uas muaj nyob rau hauv dej hiav txwv pem teb. Nws yog ib qho tawg nyob rau hauv lub ntiaj teb nto los ntawm geothermally rhuab dej tawm los. Hydrothermal vents feem ntau pom nyob ze ntawm qhov chaw volcanically active, thaj chaw uas daim hlau tectonic txav sib nrug, dej hiav txwv bass, thiab hotspots.
Puas yog hydrothermal vents txaus ntshai?
Hydrothermal vents tuaj yeem muaj cov kua qaub thiab cov tshuaj uas feem ntau yuav yog phom sij rau tsiaj. Lub hauv paus rau lub neej nyob ib ncig ntawm lub qhov cua yog ib hom kab mob uas siv cov tshuaj no. Cov kab mob tuaj yeem ntes lub zog los ntawm cov txheej txheem tshuaj lom neeg uas mus ncig ntawm cov no qhov cua.
Pom zoo:
Tus neeg haus luam yeeb dub yog dab tsi?
Ib tus neeg haus luam yeeb dub yog ib hom hydrothermal vents uas tuaj yeem pom nyob hauv dej hiav txwv. Nws yog ib qho tawg nyob rau hauv lub ntiaj teb nto los ntawm geothermally rhuab dej los tawm. Hydrothermal vents feem ntau pom nyob ze ntawm qhov chaw volcanically active, thaj chaw uas daim hlau tectonic txav sib nrug, dej hiav txwv bass, thiab hotspots
Dab tsi yog cov txheej txheem uas tsim cov ntawv luam tshiab ntawm cov kab mob caj ces?
Cov txheej txheem ntawm DNA replication tsim ib daim qauv tshiab ntawm cov kab mob cov ntaub ntawv caj ces kom dhau mus rau lub cell tshiab. Dawb ntab nucleotides yog txuam nrog lawv cov lus qhuas los ntawm ib qho enzyme hu ua polymerase. Cov no yog 'lub tsev.' Lawv sib sau ua ke DNA tshiab strand nrog txhua tus qub strands
Cov neeg haus luam yeeb dub tshwm sim qhov twg?
Cov neeg haus luam yeeb dub tau pom nyob hauv nruab nrab ntug dej hiav txwv. Ob qhov chaw tseem ceeb rau cov ntug dej hiav txwv nruab nrab yog East Pacific Rise thiab Mid-Atlantic Ridge. Yog vim li cas cov neeg haus luam yeeb dub feem ntau pom nyob rau hauv cov cheeb tsam no yog vim qhov tseeb tias cov cheeb tsam no yog qhov chaw tectonic daim hlau sib ntsib
Dab tsi ntawm cov tsiaj nyob ze hydrothermal vents?
Pom tau tsuas yog hauv xyoo 1977, cov vents hydrothermal yog lub tsev rau ntau ntau yam tsis paub yav dhau los. Loj liab-tipped raj worms, ghostly ntses, coj txawv txawv cws nrog ob lub qhov muag ntawm lawv nraub qaum thiab lwm yam tsiaj tshwj xeeb vam meej nyob rau hauv cov huab dej hiav txwv ecosystems pom nyob ze undersea volcanic chains
Cov txheej txheem dab tsi uas tus kws tshawb fawb siv los tsim ntau cov ntawv luam ntawm DNA xav tau sau rau hauv daim ntawv dawb paug 1?
Molecular Cloning. Cloning tso cai rau tsim ntau cov ntawv luam ntawm cov noob, qhia cov noob, thiab kawm txog cov noob tshwj xeeb. Yuav kom tau txais cov DNA tawg rau hauv cov kab mob hauv cov kab mob hauv daim ntawv uas yuav tau theej lossis nthuav tawm, cov khoom tawg yog thawj zaug tso rau hauv plasmid