Txoj cai lij choj txhais tau hais tias huab hwm coj tsis tuaj yeem tsim los yog rhuav tshem, txawm hais tias nws yuav raug rov kho dua hauv qhov chaw, lossis cov koom haum cuam tshuam nrog nws tuaj yeem hloov pauv hauv daim ntawv. Piv txwv li, nyob rau hauv cov tshuaj tiv thaiv, qhov loj ntawm cov tshuaj tiv thaiv ua ntej cov tshuaj tiv thaiv yog sib npaug rau qhov loj ntawm cov khoom tom qab cov tshuaj tiv thaiv. Kawg hloov kho: 2023-12-15 23:12
Matthew Meselson thiab Franklin Stahl qhov kev sim ntawm kev rov ua dua ntawm DNA, luam tawm hauv PNAS hauv xyoo 1958 (2), pab cement lub tswvyim ntawm ob lub helix. Ob tug txiv neej tom qab lub zog ua haujlwm hauv kev tshawb pom qhov kev rov ua dua tshiab ntawm DNA credit ntau ntawm lawv txoj kev vam meej rau lub sijhawm, kev ua haujlwm nyuaj, thiab kev ua haujlwm zoo. Kawg hloov kho: 2023-12-15 23:12
Taug kev: thaum koj taug kev, koj thawb txoj kev xws li koj siv lub zog ntawm txoj kev thiab lub zog tawm tsam txav koj mus tom ntej. Phom Phom: Thaum ib tug neeg tua phom, cov tshuaj tiv thaiv quab yuam thawb rab phom rov qab. Dhia mus rau hauv av los ntawm lub nkoj: Lub zog quab yuam thov rau ntawm lub nkoj thiab cov tshuaj tiv thaiv quab yuam thawb koj mus rau hauv av. Kawg hloov kho: 2023-12-15 23:12
Cov hnub nyoog dej khov uas tshwm sim nruab nrab ntawm 10,000 thiab 2,500,000 xyoo dhau los tau ua rau muaj kev cuam tshuam loj heev rau kev nyab xeeb thiab kev ua neej nyob hauv cov tropics. Thaum lub sij hawm tom qab interglacials, thaum huab cua huab cua rov qab mus rau tropics, hav zoov nthuav dav thiab tau rov tsim dua los ntawm cov nroj tsuag thiab tsiaj txhu los ntawm cov tsiaj muaj chaw nkaum. Kawg hloov kho: 2023-12-15 23:12
Thaum cov dej hauv lub raj mis khaws cia kom zoo, feem ntau tsis muaj tshuaj lom los ntawm lub raj mis yas. Txawm li cas los xij, cov kab mob yuav tshwm sim tom qab lub sij hawm ntev ntawm kev raug tshav kub los yog hnub ci. Ntau tus neeg xav tias nws tau hais tias haus dej los ntawm lub raj mis yas tso rau hauv tshav kub, ua rau nws mob qog noj ntshav. Kawg hloov kho: 2023-12-15 23:12
Yuav ua li cas ua ib daim duab Qhia koj tus kheej thiab cov kev hloov pauv. Xaiv hom kab kos kom raug los ntawm kev txiav txim siab seb txhua qhov sib txawv yog txuas ntxiv lossis tsis. Txiav txim siab qhov tseem ceeb uas yuav mus rau ntawm X thiab Y axis. Sau lub X thiab Y axis, suav nrog cov units. Teeb tsa koj cov ntaub ntawv. Kawg hloov kho: 2024-01-18 08:01
Kina shells muaj bioactives uas paub tias yuav ua tau zoo hauv kev kho mob ntshav qab zib, kab mob plawv, Alzheimer's kab mob thiab lwm yam mob hnyav. Kina, ntev tau suav tias yog New Zealand nqaij nruab deg noj qab haus huv tam sim no tau kawm rau nws cov txiaj ntsig tshuaj. Kawg hloov kho: 2023-12-15 23:12
Thawj kauj ruam hauv kev kawm siv lub zog ntawm lub ntiajteb txawj nqus yog nrhiav koj qhov chaw nruab nrab ntawm lub ntiajteb txawj nqus. Pib los ntawm kev sawv ntsug thiab tso lub ntsis ntawm koj tus ntiv tes taw rau hauv qab koj lub dab teg. Qhov siab ntawm koj qhov nruab nrab ntawm lub ntiajteb txawj nqus yog peb ntiv tes dav (kwv yees li ob ntiv tes) hauv qab qhov taw tes. Txav koj tus ntiv tes taw mus rau qhov ntawd. Kawg hloov kho: 2023-12-15 23:12
Tus nqi cua sov tsim nyog tshwm sim thaum cov tshuaj muaj zog npau npau thiab 'reflux nplhaib' pom kwv yees li ib feem peb ntawm txoj kev nce lub condenser. Ib 'reflux nplhaib' yog qhov txwv sab sauv ntawm qhov chaw kub vapors nquag ua kom txias. Kawg hloov kho: 2023-12-15 23:12
Tag nrho plaub txoj haujlwm yog ntu ntu: tangent thiab cotangent muaj lub sijhawm π whereas cosecant thiab secant muaj lub sij hawm 2π. Kawg hloov kho: 2023-12-15 23:12
Nws yog ib qho tseem ceeb rau tib neeg kom nkag siab txog cov kab mob sib txuas lus kom lawv nrhiav tau txoj hauv kev los ua cov tshuaj tua kab mob uas cuam tshuam rau cov kab mob phem kev sib txuas lus, cia cov kab mob tsis tuaj yeem paub tias muaj pes tsawg tus ntawm lawv muaj. Kawg hloov kho: 2023-12-15 23:12
Txhawm rau pib cov tshuaj tiv thaiv no, DNA polymerases xav tau ib qho primer nrog dawb 3'-hydroxyl pab pawg uas twb tau ua khub rau tus qauv. Lawv tsis tuaj yeem pib los ntawm kos los ntawm kev ntxiv nucleotides mus rau ib qho dawb-stranded DNA qauv. RNA polymerase, sib piv, tuaj yeem pib RNA synthesis yam tsis muaj primer (Tshooj 28.1. Kawg hloov kho: 2023-12-15 23:12
Piav txog cov teebmeem ntawm mitosis hauv lub cell uas tau kho nrog colchicine. Thaum lub cell raug kho nrog colchicine, spindle fibers yuav tsis tsim kom raug. Yog li cov chromosomes yuav tsis tuaj yeem muab faib kom raug lossis hloov mus rau txoj haujlwm tsim nyog hauv kev faib cell. Kawg hloov kho: 2023-12-15 23:12
Kev txhais lus tshwm sim ntawm qhov chaw tshwj xeeb hauv cytoplasm; Nws tshwm sim ntawm ribosomes. Ribosomes yog cov sib sau loj ntawm cov protein thiab ribosomal RNA (rRNA). Li no peb hom RNA koom nrog hauv cov txheej txheem kev txhais lus tab sis tsuas yog ib qho ntawm lawv, mRNA, cov lej rau cov proteins. Kawg hloov kho: 2023-12-15 23:12
Lub ghetto yog thaj chaw hauv nroog uas muaj cov khoom muaj nqis qis thiab kev nqis peev me me rau pej xeem lossis ntiag tug.Ghetto tej zaum yuav muaj cov neeg poob haujlwm siab, muaj kev ua txhaum loj, kev pabcuam hauv nroog tsis txaus, thiab cov tsev kawm ntawv poob qis heev. Kawg hloov kho: 2023-12-15 23:12
Txhua qib ntawm latitude yog kwv yees li 69 mais (111 mais) sib nrug. Qhov ntau yam txawv (vim lub ntiaj teb me ntsis ellipsoid duab) los ntawm 68.703 mais (110.567 km) ntawm kab zauv mus rau 69.407 (111.699 km) ntawm tus ncej. Qhov no yog qhov yooj yim vim hais tias txhua feeb (1/60th ntawm ib degree) yog kwv yees li ib [nautical] mais. Kawg hloov kho: 2023-12-15 23:12
Nws yog lub npe hu ua geological feature hu ua moraine - ib tug deposit ntawm lub ntiaj teb thiab pob zeb uas yog nqa los ntawm ib tug glacier. Lub pas dej tus kheej moraine tau tawm los ntawm Wenkchemna Glacier nyob ze, thiab lub npe yog qhov tsim nyog tshwj xeeb vim tias Moraine Lake yog dej khov thiab cov av thiab cov zaub mov muab nws cov xim txawv. Kawg hloov kho: 2023-12-15 23:12
Av cov ntaub ntawv uas lub ntiaj teb, huab cua, hydrosphere, thiab biosphere sib ntsib. Vim li cas kev ntxhib los mos yog ib qho tseem ceeb ntawm cov av? Nws cuam tshuam rau cov av muaj peev xwm khaws cia thiab xa dej thiab huab cua, ob qho tib si tseem ceeb rau kev loj hlob ntawm cov nroj tsuag. Kawg hloov kho: 2023-12-15 23:12
Yog li, muaj tag nrho ntawm 25 + 25 = 50 adenine thiab thymine hauv tag nrho. Qhov ntawd tawm 100− 50 = 50 seem hauv paus. Nco ntsoov tias cytosine thiab guanine daim ntawv cog lus nrog ib leeg, thiab yog li lawv sib npaug ntawm cov nyiaj. Tam sim no peb tuaj yeem faib los ntawm 2 kom tau txais tus lej ntawm guanine lossis cytosine hauv paus. Kawg hloov kho: 2023-12-15 23:12
Conjugation tshwm sim thaum p orbital ntawm peb lossis ntau dua atoms uas nyob ib sab tuaj yeem sib tshooj Conjugation zoo li stabilize molecules. Allylic carbocations yog ib qho kev sib txuas ua ke. Tus nqi zoo ntawm carbocation yog muaj nyob rau hauv P orbital ntawm sp2 hybrizied carbon. Qhov no tso cai rau sib tshooj nrog ob daim ntawv cog lus. Kawg hloov kho: 2023-12-15 23:12
Raws li ntawm 2019, International Chaw Chaw Chaw Nres Tsheb yog tib qhov chaw ua haujlwm ua haujlwm hauv chaw nres tsheb tam sim no nyob rau hauv orbit. Lwm qhov kev sim thiab cov qauv qauv kuj tseem nyob hauv lub orbit. Npaj thiab npaj. Lub npe Axiom Commercial Space Station Qhov Chaw Axiom Space Planned crew size TBD Planned launch date 2028. Kawg hloov kho: 2023-12-15 23:12
Cov no yog cov 'cov tsiaj ntawv' ntawm cov tsiaj ntawv uas yog siv los sau cov 'code lo lus'. Cov kab mob caj ces muaj cov kab ke ntawm peb tsab ntawv 'cov lus' (qee zaum hu ua 'triplelets', qee zaum hu ua 'codons'), sau ib qho tom qab ntawm qhov ntev ntawm DNA strand. Tag nrho lwm cov sequences code rau cov amino acids tshwj xeeb. Kawg hloov kho: 2023-12-15 23:12
Lub molecular geometry ntawm BCl3 yog trigonal planar nrog symmetric nqi faib nyob ib ncig ntawm lub hauv paus atom. Yog li no molecule yog nonpolar. Kawg hloov kho: 2023-12-15 23:12
Cov ntsiab lus tsis tuaj yeem tawg mus rau hauv cov khoom yooj yim. Ib yam li ntawd, ib lub ntsiab lus tsis tuaj yeem hloov pauv mus rau hauv ib lub caij sib txawv. Cov khoom siv tshuaj yog qhov yooj yim ntawm cov khoom. Kawg hloov kho: 2023-12-15 23:12
Ob tug electrons. Kawg hloov kho: 2023-12-15 23:12
Haum rau tus qauv txhais tau tias koj tab tom ua koj cov algorithm kawm txog kev sib raug zoo ntawm cov neeg twv thiab cov txiaj ntsig kom koj tuaj yeem kwv yees qhov txiaj ntsig yav tom ntej ntawm qhov tshwm sim. Yog li tus qauv haum zoo tshaj plaws muaj cov txheej txheem tshwj xeeb uas zoo tshaj plaws txhais qhov teeb meem ntawm tes. Kawg hloov kho: 2023-12-15 23:12
Metric system yog feem ntau siv hauv khw muag tshuaj thiab txhua yam uas siv hauv Chemistry. Kawg hloov kho: 2023-12-15 23:12
Txog 12 feet ib xyoos twg. Kawg hloov kho: 2023-12-15 23:12
Txhawm rau kuaj xyuas, nws yuav tsum yog (− 296.81 ± 0.20) kJ / mol. Koj yuav tsum siv NIST ntau zaus. Kuv yeej tau txais − 310.17 kJ/mol ho. Koj yuav tsum saib ΔH∘f rau SO3(g) ua ntej. Kawg hloov kho: 2023-12-15 23:12
Cov xim liab, xim av, thiab daj muaj ntau heev nyob rau yav qab teb UT tshwm sim los ntawm muaj cov hlau oxidized-uas yog hlau uas tau dhau los ua cov tshuaj tiv thaiv thaum raug huab cua lossis dej oxygenated. Cov hlau oxides tso tawm los ntawm cov txheej txheem no ua ib txheej ntawm cov pob zeb lossis pob zeb nplej uas muaj cov hlau. Kawg hloov kho: 2023-12-15 23:12
Perpendicular Kab thiab Lawv Slopes Qhov nqes ntawm ob kab perpendicular yog tsis zoo reciprocals ntawm ib leeg. Qhov no txhais tau hais tias yog ib txoj kab perpendicular rau kab uas muaj txoj kab nqes m, ces txoj kab nqes hav yog -1 / m. Piv txwv li, peb pom tias txoj kab nqes ntawm kab y = (1/2) x + 3 yog 1/2. Kawg hloov kho: 2023-12-15 23:12
Kev lag luam superphosphate cov ntaub ntawv hais tias cov khoom lag luam yog txhawm rau txhim kho cov hauv paus hniav thiab pab cov nroj tsuag cov suab thaj txav mus los zoo dua rau kev ua kom sai dua. Nws txoj kev siv ntau dua yog nyob rau hauv kev txhawb nqa ntawm cov paj loj thiab ntau cov txiv hmab txiv ntoo. Kawg hloov kho: 2023-12-15 23:12
Yuav ua li cas muaj pes tsawg ib nrab neej nws yuav siv sij hawm rau 6.02 x 10 23 nuclei kom lwj mus rau 6.25% (0.376 x 1023) ntawm thawj tus naj npawb ntawm nuclei? Nws yuav siv 4 ib nrab neej. 7. Ib nrab neej Lab. Toss # # xov tooj cua (tails up) Prediction 9 0 End. Kawg hloov kho: 2023-12-15 23:12
Cov lus teb luv luv: muab tib lub cheeb tsam, ib daim duab tsis tu ncua nrog ntau sab yuav npog ntau thaj chaw. Kawg hloov kho: 2023-12-15 23:12
Ntawm no yog yuav ua li cas: Qhia txog hom callout head thiab lub vojvoog ntawm callout npuas. Hauv ib qhov project, nyem rau ntawm Tswj tab, hauv cov chaw vaj huam sib luag nrhiav Chaw Ntxiv (qhov loj spanner), poob thiab xaiv Callout Tags. Nyob rau hauv Hom Khoom Sib Tham, qhia txog hom Callout Head siv. Kawg hloov kho: 2023-12-15 23:12
Vim tias neon tsis tshua muaj nyob hauv huab cua, nws yog ib qho khoom kim heev los tsim, kwv yees li 55 npaug kim dua li kua helium. Txawm hais tias nws tsis tshua muaj thiab kim hauv ntiaj teb, muaj qhov ncaj ncees ntawm neon nyob hauv tsev nruab nrab. Kawg hloov kho: 2023-12-15 23:12
Hauv koj lub thawv daws teeb meem (nrog rau koj tus cwj mem, ntawv thiab lub tshuab xam zauv) koj muaj 3 qhov sib npaug: Cov ces kaum ib txwm ntxiv rau 180 °: A + B + C = 180 ° Txoj Cai ntawm Sines (Sine Txoj Cai): Thaum muaj lub kaum sab xis ntxeev ib sab, qhov sib npaug no los cawm. Txoj Cai ntawm Cosines (Cov Cai Cosine):. Kawg hloov kho: 2023-12-15 23:12
Candidiasis, feem ntau hu ua thrush, yog tshwm sim los ntawm ib tug overgrowth ntawm, los yog ib tug tsis haum tshuaj rau, ib tug poov xab hu ua Candida albicans. Cov poov xab no feem ntau pom muaj nyob hauv ntau qhov chaw ntawm lub cev thiab tsis suav tias yog kev sib deev kis kab mob. Kawg hloov kho: 2023-12-15 23:12
Lus qhia. Splice txhais tau tias yog kev sib koom ua ke ntawm qhov kawg los ntawm kev sib tsoo los yog sib tshooj. Ib qho piv txwv ntawm splice yog txuas ob txoj hlua hluav taws xob los ntawm kev sib tw kawg strands ua ke. Kawg hloov kho: 2023-12-15 23:12
Qhov av qeeg muaj zog tshaj plaws hauv California hauv keeb kwm tau tshwm sim xyoo 1857, txog 45 mais qaum teb sab hnub tuaj ntawm San Luis Obispo ze Parkfield, California. Kev kwv yees rau qhov av qeeg qhov loj ntawm 7.9 txog 8.3. Kawg hloov kho: 2023-12-15 23:12