Cov nucleotides no yog ua tiav - lawv cov duab tso cai rau lawv ua ke nrog hydrogen bonds. Hauv C-G khub, purine (guanine) muaj peb qhov chaw sib txuas, thiab cov pyrimidine (cytosine). Lub hydrogen bonding ntawm cov hauv paus ntxiv yog dab tsi tuav ob txoj hlua DNA ua ke
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
Eucalyptus cinerea yog tsob ntoo me me uas loj hlob mus txog 30 feet siab thiab 10-15 feet dav. Cov nplooj silvery yog puag ncig thiab grey-ntsuab, ua rau tsob ntoo lub npe nrov. Raws li cov nroj tsuag muaj hnub nyoog, nplooj ua ntau oval thiab elongated. Nws yog ib qho nyuaj rau thaj tsam 8-11 tab sis tuaj yeem tuag rov qab rau hauv av thaum lub caij ntuj no hnyav
Cov txheej txheem tseem ceeb xws li photosynthesis, ua pa, cog zaub mov, cog cov tshuaj hormones, tropisms, nastic txav, photoperiodism, photomorphogenesis, circadian rhythms, ib puag ncig kev nyuaj siab physiology, noob germination, dormancy thiab stomata muaj nuj nqi thiab transpiration, ob qho tib si ntawm cov nroj tsuag dej kev sib raug zoo
Cov lus yuam kev ntawm lub ntsuas ntsuas ntsuas ntsuas qhia tias nws ua haujlwm tsis raug
Pob zeb. (krŭst) 1. Ib txheej txheej tawv los yog npog; cutaneous crusts feem ntau yog tsim los ntawm cov kua dej qhuav los yog cov kua paug rau ntawm qhov chaw ntawm lub hlwv los yog pustule
Cov yuam sij yog siv los txheeb xyuas ntau hom. Ib tug yuam sij feem ntau yuav nug cov lus nug raws li qhov yooj yim txheeb xyuas cov yam ntxwv ntawm lub cev. Cov yuam sij Dichotomous siv cov lus nug uas tsuas muaj ob lo lus teb xwb. Lawv tuaj yeem nthuav tawm raws li lub rooj ntawm cov lus nug, lossis ua ib tsob ntoo ntawm cov lus nug
Ionization pa taws ceeb toom teb sai sai rau cov hluav taws kub uas tshwm sim sai sai ntawm cov khoom siv hluav taws xob thiab cov kua dej, tseem hu ua hluav taws kub. Ntawm qhov tod tes, photoelectric pa luam yeeb detectors ua hauj lwm zoo tshaj plaws tom qab lub sij hawm ntev ntawm lub tsev pa luam yeeb ntawm smoldering hluav taws
ANOVA peb-txoj kev ANOVA (tseem hu ua peb-txheej xwm ANOVA) muaj peb yam (kev hloov pauv ywj pheej) thiab ib qho txawv txav. Piv txwv li, lub sij hawm siv kev kawm, kev paub ua ntej, thiab cov sij hawm pw tsaug zog yog qhov cuam tshuam rau koj li cas ntawm kev xeem
Nucleic Acid Hybridization. Nucleic acid hybridization yog txheej txheem siv los txheeb xyuas cov DNA ib ntus. Cov DNA tshwj xeeb sojntsuam yog denatured thiab annealed rau cov qauv DNA uas kuj tau denatured. Cov cheeb tsam luv luv ntawm lub hom phiaj DNA sib lawv liag tau sau npe thiab ua haujlwm raws li kev sojntsuam rau cov tshuaj tiv thaiv hybridization
Basalt. Basalt yog cov pob zeb uas muaj xim daj-xim av uas muaj calcic plagioclase (feem ntau labradorite), clinopyroxene (augite) thiab hlau ore (titaniferous magnetite). Basalt kuj tseem muaj olivine, quartz, hornblende, nepheline, orthopyroxene, thiab lwm yam. Basalt yog lub roob hluav taws sib npaug ntawm gabbro
Txog 300,000 km
Ribosomes yog cov chaw tsim khoom me me uas pom muaj nyob hauv cov hlwb. Lawv nyob hauv cytoplasm thiab ntawm ER ntxhib. Ribosomes zoo li cov me me ntawm ER thiab hauv cytoplasm. Ribosomes muaj nyob rau hauv cov nroj tsuag, tsiaj txhu, thiab kab mob hlwb
Piv txwv kab lus los ntawm Wikipedia uas siv lo lus Rna: RNA harboring lub spacer sib lawv liag pab Cas proteins paub thiab txiav exogenous DNA. Lub nucleoid muaj cov chromosome nrog nws cov proteins uas cuam tshuam thiab RNA. Magnesium ions cuam tshuam nrog polyphosphate tebchaw xws li ATP, DNA, thiab RNA
Kub (K) Cp (J/mol*K) H° - H°298.15 (kJ/mol) 298. 59.52 -0.00 300. 59.67 0.12 400. 64.94 6.34 500. 75.16 13.29
Hluav taws xob. Thaum lub suab tawm hauv xov tooj cua, nws tau hloov los ntawm lub zog hluav taws xob mus rau lub suab thiab lub zog txhua yam. Soundenergy yog txhua yam zog vim yog vibratingmolecules tsim lub suab. Txhawm rau kom muaj peev xwm mloog theradio, koj yuav tsum tau ntsaws lub qaum rau hauv lub qhov hluav taws xob
Ib tug mole ntawm atoms ntawm oxygen muaj ib tug loj ntawm 16 g, raws li 16 yog lub atomic hnyav ntawm oxygen, thiab muaj 6.02 X 1023 atoms ntawm oxygen
Ib qho roj zoo tagnrho txhais tau tias yog ib qho uas txhua qhov kev sib tsoo ntawm cov atoms lossis cov molecules zoo kawg nkaus eleastic thiab uas tsis muaj qhov cuam tshuam rau lub zog. Nyob rau hauv xws li ib tug roj, tag nrho cov sab hauv lub zog yog nyob rau hauv daim ntawv ntawm kinetic zog thiab tej kev hloov nyob rau hauv lub zog sab hauv yog nrog los ntawm ib tug hloov nyob rau hauv kub
"Lub 5 'cap tiv thaiv mRNA nascent los ntawm kev degradation thiab pab nyob rau hauv ribosome khi thaum lub sij hawm txhais lus. Ib tug poly (A) tail yog ntxiv rau 3' kawg ntawm pre-mRNA ib zaug elongation tiav. Tab sis ua li cas txog Prokaryotic mRNA?
Factory Built Storm Shelter Prices Premanufactured cua daj cua dub vaj tse tuaj yeem raug nqi tsawg li $3,300, suav nrog kev teeb tsa. Tus nqi nruab nrab ntawm ib qho 8 ft. los ntawm 10 ft. saum toj-hauv av qauv yog nruab nrab ntawm $ 5,500 thiab $ 20,000
Nyob rau hauv biology, txoj kev loj hlob nyob rau hauv ib tug kab mob sib txawv ntawm cov kab mob mus rau lub cev. Piv txwv li, cov kab mob multicellular loj hlob los ntawm cov txheej txheem ntawm cellular division hu ua mitosis, thaum lwm tus (ua unicellular) loj hlob los yog reproduce colonyally-hais lus ntawm tus txheej txheem hu ua binary fission
Oort Huab Tsis tas li ntawd, nyob qhov twg cov comets pom nyob rau hauv lub hnub ci system? Peb paub tias feem ntau ntawm cov comets muaj nyob rau hauv ib txheej tuab ntawm ntug heev ntawm peb hnub ci system . Astronomers hu qhov no lub Oort huab.
Muaj tsib yam tseem ceeb ntawm txhua yam huab cua: thermal expansion, Frost weathering, exfoliation, abrasion, thiab ntsev crystal kev loj hlob. Thermal Expansion. Abrasion thiab cuam tshuam. Exfoliation los yog Siab Tso Tawm. Frost Huab cua. Salt-crystal loj hlob. Nroj tsuag thiab tsiaj ua si
Nyob rau hauv lub cev geology, nam yog lub compass kev taw qhia uas ib tug txoj kab nqes ntsej muag (nws tseem hu ua raug). Cov kev taw qhia ntawm txoj kab nqes tuaj yeem cuam tshuam rau lub cev thiab cov yam ntxwv ntawm txoj kab nqes, hu ua txoj kab nqes. Lub sij hawm nam kuj siv tau los piav txog cov duab lossis kev sib dhos ntawm ntug hiav txwv
Lub voj voog lub neej suav nrog txhua theem uas muaj sia nyob mus txog txij thaum yug mus txog rau qhov tuag. Txhua yam uas muaj sia nyob muaj qhov pib, thiab lawv txhua tus yuav tsum tuag. Qhov tshwm sim ntawm kev yug thiab kev tuag txawv ntawm ib hom tsiaj mus rau lwm qhov. Cov khoom muaj sia feem ntau muaj ib yam zoo ib yam - lawv pib lub neej ua ib lub xov tooj me me
Na2HPO3 yog tsim thaum ob lub acidic hydrogens hloov los ntawm sodium. Nws tsis muaj acidic hydrogen. Yog li, nws yog ib txwm sodium ntsev ntawm phosphorus acid. Tab sis NaH2PO3 yog cov ntsev ntsev vim nws tseem muaj ib qho acidic lossis hloov tau hydrogen hauv nws cov muaj pes tsawg leeg
Lub mRNA tsim nyob rau hauv transcription yog thauj tawm ntawm lub nucleus, mus rau hauv lub cytoplasm, mus rau lub ribosome (lub cell lub protein synthesis Hoobkas). Cov txheej txheem uas mRNA coj cov protein synthesis nrog kev pab ntawm tRNA hu ua kev txhais lus. Lub ribosome yog ib qho loj heev ntawm RNA thiab protein molecules
Cov dev muaj ntau qhov hnov ntxhiab thiab zoo dua scentdete ntau dua tib neeg. Qee cov kws tshawb fawb qhia tias cov dev tuaj yeem hnov seb cov dej num ua ntej av qeeg (xws li khawb, sib tsoo, thiab tawg ntawm pob zeb hauv av). Yog tias lawv hnov lus tsis zoo, lawv tsis tshua pom muaj av qeeg, Coren sau
Cov kev loj hlob ntsuab-xiav uas koj pom ntawm tsob ntoo trunks thiab ceg tsis yog mosses. Lawv yog cov lichens. Lichens tsis tua koj tsob ntoo, thiab tsis ua rau nws ua tsis tiav. Ntoo bark tsis siv los ua zaub mov
Galileo Galilei
Wellbore ntim Volumes tau tshaj tawm nyob rau hauv units ntawm tej kas tham thiab yuav xam tau rau ib tug nyob rau hauv-gauge qhov los ntawm kev siv qhov sib npaug los txiav txim qhov ntim nyob rau hauv tej kas tham ib tug ko taw, ces muab cov nqi ntawd los ntawm qhov ntev ntawm lub qhov nyob rau hauv taw. (Faj seeb: kev ntxuav tawm thiab cov ncuav mog qab zib tuab tuaj yeem hloov qhov ntim qhov ntim.)
Nws yog tsim los ntawm reacting potassium hydroxide thiab sulfuric acid. Nws tuaj yeem ua tau los ntawm kev ua haujlwm ntawm cov poov tshuaj chloride nrog sulfuric acid. Nws tuaj yeem ua tau los ntawm kev ua haujlwm ntawm sulfur dioxide, oxygen, thiab potassium chloride nrog qee cov dej
Xim. Ua ntej koj ua cov phab ntsa, sau cov kab nrib pleb ib ncig ntawm cov pob caus nrog ntoo putty thiab xuab zeb lawv kom lawv yaug nrog cov phab ntsa. Qhov no yuav tsis tsim nyog yog tias koj tsuas yog ntxiv cov xim pleev xim, xws li whitewash. Tab sis txhawm rau pleev xim rau cov ntoo thuv thiab zais nws qhov zoo nkaus li, koj yuav tsum txawm tawm cov pob tw
Lawv yuav nyob hauv ib qho chaw li 5-6 hnub ces tsiv mus
Selenium: cov khoom ntawm cov dawb atoms. Selenium atoms muaj 34 electrons thiab lub plhaub qauv yog 2.8. 18.6 ib. Hauv av xeev electron configuration ntawm hauv av xeev gaseous neutral selenium yog [Ar]
Txawm li cas los xij, acetone tseem suav tias yog cov kuab tshuaj polaraprotic, txawm tias qhov tseeb tias nws yog acidic, thiab tsis muaj acidic tsawg dua li cawv. Tom qab ntawd dua, acetone (thiab lwm yam carbonyl uas muaj cov kuab tshuaj) yog, qhov tseeb, cov kuab tshuaj tsis zoo thaum siv cov hauv paus muaj zog vim lawv cov acidity siab
Cov huab cua kuj tseem tiv thaiv cov khoom muaj sia nyob hauv ntiaj teb los ntawm lub hnub teeb meem ultraviolet hluav taws xob. Ib txheej nyias ntawm cov pa hu ua ozone siab nyob rau hauv cov huab cua lim tawm cov rays txaus ntshai. Cov huab cua kuj pab txhawb nqa lub neej ntawm lub ntiaj teb
Lub voj voog chav tsev muaj ntau qhov sib txawv uas txhua tus muaj qhov sib thooj ntawm lub voj voog. Thecoordinates ntawm txhua lub ntsiab lus muab peb txoj hauv kev los nrhiav qhov tangent ntawm txhua lub kaum ntse ntse. Lub tangent ntawm lub kaum sab xis yog sib npaug rau y-coordinate muab faib los ntawm x-coordinate
RNA polymerase synthesizes RNA strand ntxiv rau cov qauv DNA strand. Nws synthesizes RNA strand nyob rau hauv 5' mus rau 3' kev taw qhia, thaum nyeem cov qauv DNA strand nyob rau hauv lub 3' mus rau 5' kev taw qhia. Cov qauv DNA strand thiab RNA strand yog antiparallel
Cov qe menyuam hauv cov tsiaj, hu ua gametes, yog cov piv txwv ntawm cov hlwb haploid. Ob leeg txiv neej thiab poj niam cov qe menyuam, paub raws li cov phev thiab qe qe, yog haploid uas lawv txhua tus muaj ib daim qauv ntawm txhua hom chromosome uas, thaum koom nrog lwm cov hlwb haploid, tsim ib qho, ua tiav chromosome