Hydrocarbons (Alkanes) Ib chav kawm tseem ceeb ntawm binary compounds yog cov hydrocarbons. Raws li lub npe implies hydrocarbons tsuas yog hydrogen thiab carbon atoms. Muaj ntau txhiab tus ua tau hydrocarbon molecules. Txawm li cas los xij, qhov yooj yim tshaj plaws yog hu ua 'alkanes'
Nyob rau hauv ib qho khoom, cov khoom no tau ntim zoo ua ke thiab tsis pub dawb txav mus rau hauv cov khoom. Molecular tsab ntawv tsa suab rau cov hais nyob rau hauv asolid yog nyob rau hauv me me vibrations ntawm lub atomsaround lawv taag txoj hauj lwm; yog li ntawd, cov khib nyiab muaj ib qho fixedshape uas nyuaj rau hloov
Hauv cov noob caj noob ces, kev tshem tawm (tseem hu ua gene deletion, deficiency, lossis deletion mutation) (kos npe: Δ) yog kev hloov pauv (kev hloov pauv caj ces) uas ib feem ntawm chromosome lossis ib ntu ntawm DNA tau tawm thaum lub sijhawm DNA rov ua dua. Txhua tus lej ntawm nucleotides tuaj yeem raug tshem tawm, los ntawm ib lub hauv paus mus rau tag nrho cov chromosome
Cov cuab yeej siv microbiology suav nrog cov tshuab tsom iav; swb; cov hlab ntsha; petri tais diav; kev loj hlob nruab nrab, ob qho tib si khoom thiab kua; inoculation loops; pipettes thiab cov lus qhia; incubators; autoclaves, thiab laminar flow hoods
Txoj hlua Efficiency qhia tau hais tias kev siv ntawm kev ncua kev kawm ntawv insulator. Kev siv cov discs ntawm insulator ntau dua yuav yog txoj hlua ua haujlwm zoo. Txoj hlua Efficiency yog txhais raws li qhov kev faib tawm ntawm tus neeg xyuas pib qhov hluav taws xob thiab qhov hluav taws xob hla lub disc ze tshaj plaws rau tus neeg xyuas pib muab faib los ntawm cov discs
Cov kab ntu yuav sib haum yog tias lawv muaj qhov ntev. Txawm li cas los xij, lawv yuav tsum tsis txhob sib npaug. Lawv tuaj yeem nyob ntawm txhua lub kaum sab xis lossis kev taw qhia ntawm lub dav hlau. Hauv daim duab saum toj no, muaj ob txoj kab sib txuas
Lub cell membrane muaj li cas? Feem ntau yog phospholipid bilayer. Dab tsi ua rau phospholipid bilayer? Hydrophilic taub hau uas soluble hauv dej thiab hydrophobic tails uas tsis soluble hauv dej
Spykman tau npaj ib txoj kev xav uas tawm tsam Mackinder's Heartland Theory. Raws li nws txoj kev xav rimland, thaj chaw ntug dej hiav txwv lossis thaj chaw ntawm Eurasia yog qhov tseem ceeb rau kev tswj hwm lub Ntiaj Teb Island, tsis yog Heartland. Raws li Spykman, cov xeev tsis muaj av feem ntau ntsib teeb meem kev nyab xeeb los ntawm lawv cov neeg nyob ze tam sim ntawd
Cosolvents uas feem ntau siv yog methanol, ethanol thiab dej. Cosolvents ua hauj lwm zoo tshaj plaws nyob rau hauv lub xub ntiag ntawm lwm cov kuab tshuaj uas, nyob rau hauv kev sib txuas, txhim khu lub dissolution ntawm ib tug solute
Electroscope. npe. Ib qho cuab yeej siv los txheeb xyuas qhov muaj, kos npe, thiab hauv qee qhov kev teeb tsa qhov loj ntawm tus nqi hluav taws xob los ntawm kev sib nrig sib nyiam los yog kev tawm tsam ntawm cov ntawv hlau lossis cov pob pith. Daim ntawv txheeb xyuas: e·lec'tro·scop'ic
Zoo li cov nroj tsuag khoov rau lub teeb, txhua yam kab mob ua rau muaj kev hloov pauv hauv lawv ib puag ncig. Ib qho kev hloov pauv ntawm cov kab mob nyob ib puag ncig uas ua rau lub cev muaj zog yog hu ua stimulus (plural stimuli). Cov kab mob ua rau muaj kev cuam tshuam nrog kev teb-kev ua lossis hloov tus cwj pwm
Net ionic equation yog ib qho tshuaj sib npaug rau cov tshuaj tiv thaiv uas teev tsuas yog cov tsiaj uas koom nrog cov tshuaj tiv thaiv. Net ionic kab zauv feem ntau yog siv nyob rau hauv acid-base neutralization tshwm sim, ob chav displacementreactions, thiab redox tshua
Delta E (CMC) Cov xim sib txawv ntawm Pawg Saib Xyuas Kev Ntsuas Xim (CMC) yog ib qho qauv siv ob qhov tsis muaj l thiab c, feem ntau hais tias CMC (l: c). Feem ntau siv qhov tseem ceeb rau kev lees paub yog CMC (2: 1) thiab rau kev nkag siab yog CMC (1: 1)
Cov "feem ntau hloov" carbon yog cov pa roj carbon ntawm alkene uas txuas nrog cov pa roj carbon ntau (los yog "tsawg dua cov hydrogens", yog tias koj nyiam). cov "tsawg hloov" carbon yog cov pa roj carbon ntawm alkene uas txuas nrog tsawg tshaj plaws carbons (los yog "ntau dua hydrogens")
1. Cov tshuaj dawb huv tsis tuaj yeem muab cais ua lwm yam teeb meem, thaum sib xyaw yog sib xyaw ntawm ob lossis ntau dua cov khoom ntshiab. 2. Cov khoom ntshiab muaj lub cev tsis tu ncua thiab tshuaj lom neeg, thaum cov khoom sib xyaw muaj qhov sib txawv ntawm lub cev thiab tshuaj lom neeg (piv txwv li, qhov kub thiab txias)
Atomic radius yog txiav txim siab raws li qhov kev ncua deb ntawm lub nuclei ntawm ob qho tib si atoms sib koom ua ke. Lub atomic radius ntawm atoms feem ntau txo qis ntawm sab laug mus rau sab xis hla ib lub sijhawm. Lub atomic radius ntawm atoms feem ntau nce los ntawm sab saum toj mus rau hauv qab nyob rau hauv ib pawg
Peb-point Testcross. Hauv kev txheeb xyuas kev sib txuas, peb lub ntsiab lus testcross yog hais txog kev txheeb xyuas qhov qub txeeg qub teg ntawm 3 alleles los ntawm kev sim hla ib qho triple heterozygote nrog triple recessive homozygote. Nws ua rau peb txiav txim siab qhov kev ncua deb ntawm 3 alleles thiab qhov kev txiav txim uas lawv nyob ntawm chromosome
Damselflies noj cov kab me me, mos mos, nrog rau aphids, yoov tshaj cum, thiab gnats. Giant damselflies pluck web-building kab laug sab txoj cai los ntawm lub vev xaib noj lawv. Nymphs noj cov kab me me hauv dej, tadpoles thiab ntses me. Damselflies feem ntau zaum thiab tos cov tsiaj nyeg es tsis txhob ntes nws hauv nruab nrab huab cua zoo li dragonflies ua
Savannas muaj qhov kub thiab txias txhua xyoo. Muaj ob lub caij sib txawv heev hauv savanna; Lub caij ntuj no ntev heev (lub caij ntuj no), thiab lub caij ntub heev (lub caij ntuj sov). Thaum lub caij qhuav tsuas yog qhov nruab nrab ntawm li 4 ntiv tes los nag los. Thaum lub Kaum Ob Hlis thiab Lub Ob Hlis yuav tsis muaj nag los nag
Qhov tseem ceeb ntawm cov tshuaj enantiomers hauv chaw kho mob pharmacology. Williams K, Lee E. Qhov kev txiav txim asymmetry ntawm cov roj ntsha macromolecules tso cai rau lawv sib txawv ntawm cov isomers optical ntawm monomeric substrates
Koj tuaj yeem suav cov litres los ntawm kev sib npaug ntawm moles los ntawm 22.4 yog tias cov khoom yog roj ntawm STP
ATP muaj tsuas yog hais txog lub zog xav tau rau feem ntau cov tshuaj tiv thaiv cellular. Vim li cas cellular respiration koom ua plaub theem? _Yog li hais tias lub zog nyob rau hauv cov piam thaj molecule tuaj yeem tso tawm hauv ib kauj ruam. _Yog li ntawd nws tuaj yeem tshwm sim hauv cov hlwb sib txawv
Cov feem pua ntawm cov ntsiab lus Element Symbol Mass Percent Sodium Na 54.753% Fluorine F 45.247%
Qhov tseeb sawv cev rau qhov kev ntsuas ze npaum li cas los ntawm nws qhov tseeb. Qhov no yog qhov tseem ceeb vim tias cov cuab yeej tsis zoo, cov ntaub ntawv ua haujlwm tsis zoo lossis tib neeg yuam kev tuaj yeem ua rau cov txiaj ntsig tsis raug uas tsis ze rau qhov tseeb. Precision yog qhov ze npaum li cas ntawm cov kev ntsuas ntawm tib yam yog rau ib leeg
Lo lus 'sp' nyob rau hauv cov qauv kev txheeb cais sawv cev rau cov qauv sib txawv ntawm cov qauv sib txawv. Lub sij hawm 'n1' nyob rau hauv cov qauv kev txheeb cais sawv cev qhov loj ntawm thawj tus qauv, thiab lub sij hawm. 'n2' nyob rau hauv cov qauv kev txheeb cais sawv cev qhov loj ntawm tus qauv thib ob uas tau muab sib sau ua ke. nrog thawj tus qauv
Yuav Ua Li Cas Pleev Knotty Pine Spot ua ntej cov pob caus ua ntej nrog cov roj raws lossis cov xim xim shellac primer uas yog tsim los tiv thaiv los ntshav. Yog tias muaj ntau cov pob caus, ua rau tag nrho saum npoo kom nws zoo nkauj dua. Yog hais tias cov boards tau varnished, maj mam xuab zeb lawv thiab so tawm tej plua plav ua ntej priming yog li cov primer yuav ua raws li zoo
Sterilization indicators, xws li spore strips thiab qhov taw qhia daim kab xev, pab kom niaj hnub saib xyuas, kev tsim nyog, thiab load xyuas cov txheej txheem sterilization. Lawv qhia seb cov xwm txheej thaum lub sij hawm lub voj voog autoclave puas tsim nyog kom ua tiav qib siab ntawm microbial inactivation
Plant systematics yog ib qho kev tshawb fawb uas suav nrog thiab suav nrog kev sau se ib txwm; Txawm li cas los xij, nws lub hom phiaj tseem ceeb yog rov tsim kho keeb kwm evolutionary ntawm cov nroj tsuag lub neej. Nws faib cov nroj tsuag rau hauv pawg taxonomic, siv cov ntaub ntawv morphological, anatomical, embryological, chromosomal thiab tshuaj
Yuav ua li cas tshwm sim rau qhov saturation concentration thaum ib tug tov lub temp yog nce. Yuav ua li cas tshwm sim raws li ib tug tov yog rhuab? Yog tias koj ua kom sov ib yam khoom ntau dua koj lub taub hau nws cov suab thaj ntau dua tam sim no lub solubility yuav siab dua, thaum rhuab vim nws yuav siv sij hawm ntau dua rau cov khoom kom saturated. Kuj khov
Avogadro tus naj npawb, tus naj npawb ntawm cov khoom nyob rau hauv mole, tuaj yeem txiav txim siab ua ntej ' suav' tus lej ntawm atoms hauv qhov chaw me me thiab tom qab ntawd scaling mus nrhiav tus naj npawb ntawm cov khoom uas yuav muaj qhov sib npaug ntawm atomic lossis molecular mass. hauv grams
Lub hom phiaj. Daim Ntawv Qhia Txog Kev Nyab Xeeb (yav tas los hu ua Material Safety Data Sheet) yog ib daim ntawv qhia ntxaws ntxaws uas tau npaj los ntawm cov chaw tsim khoom lossis cov neeg xa khoom ntawm cov tshuaj lom neeg. Nws piav qhia txog lub cev thiab tshuaj lom neeg ntawm cov khoom
Txhais. npe, plural: bases. (1) (molecular biology) Lub nucleobase ntawm nucleotide koom nrog hauv kev sib koom ua ke, xws li DNA lossis RNA polymer. (2) (anatomy) Qhov qis tshaj plaws los yog hauv qab ntawm cov nroj tsuag lossis tsiaj lub cev ze tshaj rau qhov txuas. (3) (chemistry) Ib qho dej-soluble compound uas reacts nrog acid thiab cov ntaub ntawv
Hluav taws xob Tester. Tus ntsuas hluav taws xob tuaj yeem ntsuas ntau yam hluav taws xob tsis zoo, los ntawm qhov tam sim no thiab qhov hluav taws xob mus rau qhov tsis kam, txuas ntxiv thiab dhau mus. Lub tshuab ntsuas hluav taws xob yog siv los ntawm cov neeg cog lus hluav taws xob los ntsuas txhua yam ntawm cov xov hlau nyob thiab cov hluav taws xob hluav taws xob mus rau cov hluav taws xob hluav taws xob thiab cov hluav taws xob hloov hluav taws xob
Morphological tsom xam yog ib txoj kev siv heev thaum koj yuav tsum txheeb xyuas lossis decompose cov qauv lossis cov qauv ntawm cov khoom rau hauv lawv cov duab sib txawv. Cov duab zoo li no tuaj yeem cuam tshuam rau ib lossis ntau qhov tshwj xeeb ntawm cov khoom
Piv txwv ntawm cov khoom siv uas hloov hluav taws xob rau hauv lub zog siv tshuab - hauv lwm lo lus, cov cuab yeej siv hluav taws xob siv hluav taws xob txav qee yam - suav nrog: lub cev muaj zog hauv cov qauv siv hluav taws xob niaj hnub no. lub cev muaj zog nyob rau hauv niaj hnub tus qauv fais fab saws. lub cev muaj zog hauv cov hniav txhuam hniav. lub cav ntawm lub tsheb hluav taws xob
Ib qho kev sib npaug nrog ob txoj haujlwm yog hu ua Ob Kauj Ruam Equation, zoo li qhov sib npaug nrog ntau dua kev ua haujlwm lossis ntau qhov haujlwm yog hu ua Multi-Step Equations. Lub npe no yog siv vim hais tias txhawm rau daws qhov sib npaug koj yuav tsum siv ntau kauj ruam
Qhov chaw astrometry rau parallax Lub Hubble telescope WFC3 tam sim no muaj qhov tseeb ntawm 20 mus rau 40 microarcseconds, ua kom muaj kev ntsuas qhov deb mus txog 3,066 parsecs (10,000 ly) rau cov hnub qub me me
Ntawm no yog 7 lub cim qhia ntau tshaj plaws hauv lub dab dej yuav tshwm sim: Ib puag ncig kev nyuaj siab nyob rau hauv lub ntiaj teb: Localized subsidence los yog kev nyuaj siab nyob txhua qhov chaw ntawm lub tsev: Lub pas dej ncig (los yog lub pas dej loj, tob): Lub hauv paus daws teeb meem: Kev tawg ntawm txoj kev lossis pavement : Cia li poob ntawm qhov dej hauv qhov chaw:
Hardwood swamps muaj ntoo xws li liab maple, dub willow, aspen, paj rwb, tshauv, elms, swamp dawb ntoo qhib, pin ntoo qhib, tupelo thiab birches
Ib qho Delta E ntawm 1 ntawm ob xim uas tsis sib chwv ib leeg yog feem ntau suav hais tias tsis tshua pom tau los ntawm qhov nruab nrab tib neeg soj ntsuam; Delta E nruab nrab ntawm 3 thiab 6 feem ntau suav hais tias yog qhov ua tau zoo hauv kev lag luam luam tawm ntawm cov ntawv luam tawm