Cov phospholipids nyob rau hauv lub plasma membrane yog teem nyob rau hauv ob txheej, hu ua phospholipid bilayer. Cov molecules uas yog hydrophobic tuaj yeem yooj yim dhau los ntawm cov plasma membrane, yog tias lawv me txaus, vim tias lawv yog cov dej-ntxhais zoo li sab hauv ntawm daim nyias nyias
Cov hlau nplaum tuaj yeem ua tau los ntawm kev tso cov khoom siv ferromagnetic rau hauv qhov chaw sib nqus, lossis ntawm tus ncej muaj zog ntawm cov hlau nplaum. Lub ntiaj teb zoo li hlau nplaum li cas? Lub ntiaj teb zoo li cov hlau nplaum vim muaj cov hlau nplaum loj nyob ib puag ncig nws zoo li lub hlau nplaum. Sib piv lub ntiaj teb tus ncej nrog lub ntiaj teb cov hlau nplaum
Xam los ntawm Oxidation Number Tus lej oxidation ntawm oxygen yog -2, thiab tus lej oxidation ntawm hydrogen yog +1. Ntxiv ua ke cov lej oxidation ntawm tag nrho cov atoms hauv polyatomic ion. Hauv qhov piv txwv, -2 +1 = -1. Qhov no yog tus nqi ntawm polyatomic ion
Kev kawm tau zoo dua thiab npog ntau ntawm kuv cov nyiaj hli kws kho tsiaj hauv hiav txwv. Lub sijhawm no koj yuav tau txais nyiaj hli txhua xyoo ntawm $ 16,000. Tom qab ntawd, yog tias koj muaj hmoo, muaj lub sijhawm tom qab doc uas cov kws tshawb fawb tau txais nyiaj hli txhua xyoo tej zaum $ 30,000
Ionic tebchaw muaj cov ntsiab lus siab melting thiab boiling, yog li lawv nyob rau hauv cov khoom nyob rau hauv chav tsev kub. Lub zog no overcomes lub zog electrostatic zog ntawm attraction uas ua nyob rau hauv tag nrho cov lus qhia ntawm tus oppositely them ions: ib co quab yuam tau kov yeej thaum lub melting
Covalent Bonds vs Ionic Bonds Covalent Bonds Ionic Bonds State nyob rau hauv chav tsev kub: kua los yog gaseous khoom polarity: Tsawg siab
Qhia acyclic graphs (DAGs) yog qhov pom kev sawv cev ntawm cov kev xav tau uas tau siv ntau zuj zus hauv kev kis mob niaj hnub no. Lawv tuaj yeem pab txheeb xyuas qhov muaj kev tsis sib haum xeeb rau cov lus nug ntawm tes
Thaum koj hloov cov coefficients, koj tsuas yog hloov tus naj npawb ntawm cov molecules ntawm cov khoom tshwj xeeb. Txawm li cas los xij, thaum koj hloov cov ntawv sau npe, koj tab tom hloov cov tshuaj nws tus kheej, uas yuav ua rau koj qhov sib npaug tshuaj tsis raug
Cov txheej txheem hauv qab no tsawg kawg ib zaug ua pov thawj ua tiav rau kev tshawb pom lub ntiaj teb tshiab lossis tshawb pom lub ntiaj teb uas twb tau pom lawm: Radial tshaj tawm. Transit photometry. Reflection/Emission Modulations. Relativistic beaming. Ellipsoidal variations. Pulsar lub sijhawm. Lub hnub qub hloov pauv sijhawm. Lub sijhawm thauj mus los
CEEB TOOM: Hauv ob qho tib si sib cais funnels, txheej liab yog txheej aqueous. Nyob rau hauv sab laug sib cais funnel, txheej aqueous yog nyob rau hauv qab, txhais tau tias cov organic txheej yuav tsum tsawg ntom dua dej. Nyob rau hauv txoj cai sib cais funnel, txheej aqueous yog nyob rau sab saum toj, txhais tau tias cov organic txheej yuav tsum ntom dua dej
Lub 'sab tes' thiab 'sab laug tes' nomenclature yog siv los ua lub npe enantiomers ntawm chiral compound. Lub stereocenters tau sau tias yog R lossis S. Xav txog thawj daim duab: lub xub nkhaus yog kos los ntawm qhov tseem ceeb tshaj plaws (1) hloov mus rau qhov tseem ceeb tshaj plaws (4) hloov pauv
Hauv cov tshuaj tiv thaiv tshuaj, tsuas yog cov atoms tam sim no hauv cov reactants tuaj yeem xaus rau hauv cov khoom. Tsis muaj cov atom tshiab tsim, thiab tsis muaj atoms raug puas tsuaj. Nyob rau hauv cov tshuaj tiv thaiv tshuaj, reactants sib cuag, bonds ntawm atoms nyob rau hauv lub reactants tawg, thiab atoms rearrange thiab tsim tshiab bonds los ua cov khoom
Cov ntawv ua neej nyob ntxov Lub hnub nyoog ntawm lub ntiaj teb yog txog 4.54 billion xyoo; cov pov thawj ntxov tshaj plaws ntawm lub neej hauv ntiaj teb hnub los ntawm tsawg kawg 3.5 billion xyoo dhau los. Muaj pov thawj tias lub neej tau pib nyob rau hauv ib feem ntawm lub xyoo dhau los no
Taw qhia. Kev kawm ntawm geology yog kev kawm ntawm lub ntiaj teb, thiab yog li thaum kawg yog kev kawm ntawm pob zeb. Geologists txhais lub pob zeb li: Ib qho kev sib sau ua ke ntawm cov zaub mov, mineraloids, lossis cov khoom ntawm lwm cov pob zeb
Txij li thaum lub compound yog unsaturated nrog kev hwm rau hydrogen atoms, cov electrons ntxiv tau sib koom ntawm 2 carbon atoms ua ob daim ntawv cog lus. Alkynes kuj tseem hu ua ACETYLENES los ntawm thawj qhov sib xyaw hauv koob. Acetylene tuaj yeem tsim los ntawm cov tshuaj tiv thaiv calcium carbide thiab dej
Cov nroj tsuag kuj tseem ceeb heev rau kev lag luam hauv ntiaj teb, tshwj xeeb tshaj yog nyob rau hauv kev siv fossil fuels los ua lub zog, tab sis kuj tseem nyob hauv ntiaj teb kev tsim khoom noj, ntoo, roj thiab lwm yam khoom siv
Qhov no puas pab tau? Yog · Tsis yog
Alaska Ntoo thiab Cov Lus Qhia (Ib ob peb ntawm lawv) Nyob rau sab hauv, cov hom tseem ceeb muaj xws li dawb spruce, birch, thiab quaking aspen ntawm toj siab, dub spruce thiab tamarack hauv hav zoov hav zoov, thiab balsam poplar hauv dej nyab
Optical telescopes cia peb pom ntxiv; lawv muaj peev xwm sau tau thiab tsom ntau lub teeb los ntawm cov khoom nyob deb tshaj qhov peb lub qhov muag tuaj yeem nyob ib leeg. Qhov no yog ua tiav los ntawm refracting los yog reflecting lub teeb siv lo ntsiab muag los yog iav. Refractive telescopescontain lo ntsiab muag zoo li cov pom hauv peb lub qhov muag tsuas yog loj dua
Cov ntsiab lus tau muab faib ua cov hlau, tsis yog hlau, thiab metalloids. 2.11: Hlau, Nonmetals, thiab Metalloids. Metallic Elements Nonmetallic cov ntsiab lus Malleable thiab ductile (hloov tau) raws li cov khib nyiab brittle, tawv los yog mos Ua kom sov thiab hluav taws xob tsis zoo conductors
Lub factorial ANOVA yuav tsum tau siv thaum cov lus nug tshawb fawb nug txog kev cuam tshuam ntawm ob lossis ntau qhov kev ywj pheej ntawm ib qho kev hloov pauv
Cov lus qhia rau kev siv cov Code Charts Char Keyboard ALT Code Description Alpha Delta δ ALT + 235 (948) Greek tsab ntawv me me Delta Δ ALT + 916 Greek tsab ntawv loj Delta
Qhov no txhais tau hais tias txhua ntawm ob strandsindouble-stranded DNA ua raws li ib tug templatetoproduce ob strands tshiab. Replication relies oncomplementary basepairing, uas yog lub hauv paus ntsiab lus piav qhia los ntawmChargaff cov cai: adenine (A) ib txwm khi nrog thymine (T) thiab cytosine (C) ib txwm khi nrog guanine (G)
Alkalis muaj pH ntau dua 7 Cov khoom nruab nrab muaj pH sib npaug li 7. Cov kua qaub thiab alkalis ob leeg muaj ions. Cov kua qaub muaj ntau cov hydrogen ions, uas muaj lub cim H +. Alkalis muaj ntau hydroxide ions, cim OH-. Dej yog nruab nrab vim hais tias tus naj npawb ntawm hydrogen ions sib npaug rau cov hydroxide ions
Zoo li muaj zog acids, lub hauv paus muaj zog dissociates yuav luag tag nrho hauv dej; Txawm li cas los xij, nws tso tawm hydroxide (OH-) ions ntau dua li H +. Cov hauv paus muaj zog muaj pH siab heev, feem ntau yog li 12 txog 14
Therophytes yog cov nroj tsuag txhua xyoo uas ua tiav lawv lub neej voj voog nyob rau lub sijhawm luv luv thaum cov xwm txheej zoo thiab muaj sia nyob hnyav li cov noob. Lawv feem ntau pom nyob rau hauv cov suab puam thiab lwm thaj chaw arid. Los ntawm: therophyte nyob rau hauv phau ntawv txhais lus ntawm Biology »
Lub hauv paus ntsiab lus ntawm stoichiometry yog raws li txoj cai ntawm kev txuag ntawm huab hwm coj. Cov teeb meem tsis tuaj yeem tsim lossis rhuav tshem, yog li qhov loj ntawm txhua lub ntsiab lus tam sim no hauv cov khoom lag luam ntawm cov tshuaj tiv thaiv tshuaj yuav tsum sib npaug rau qhov loj ntawm txhua thiab txhua lub ntsiab lus tam sim no hauv cov reactant
Parallel kab muaj tib txoj kab nqes thiab yuav tsis sib tshuam. Cov kab sib txuas txuas ntxiv, qhov tseeb, mus ib txhis yam tsis tau kov (piv txwv tias cov kab no nyob rau tib lub dav hlau). Ntawm qhov tod tes, txoj kab nqes ntawm kab perpendicular yog qhov tsis zoo ntawm ib leeg, thiab ib khub ntawm cov kab no sib tshuam ntawm 90 degrees
Muaj ob hom nucleic acids uas yog polymers pom nyob rau hauv tag nrho cov nyob cell. Deoxyribonucleic Acid (DNA) feem ntau pom nyob rau hauv lub nucleus ntawm lub cell, thaum Ribonucleic Acid (RNA) feem ntau pom nyob rau hauv lub cytoplasm ntawm lub cell, tab sis nws yog feem ntau synthesized nyob rau hauv lub nucleus
Cov nroj tsuag uas loj hlob hauv Sahara yuav tsum tuaj yeem hloov kho kom tsis txhob muaj nag lossis daus thiab kub heev. Txhawm rau kom muaj sia nyob lawv tau hloov kho nplooj mus rau hauv qaum kom tiv thaiv kom tsis txhob poob dej ntau dhau los ntawm cov nroj tsuag lub cev thiab cov hauv paus hniav sib sib zog nqus mus rau qhov dej. Nws tuab stems khaws dej rau lub sijhawm ntev
Lithium yog ib feem ntawm pawg hlau alkali thiab tuaj yeem pom nyob rau hauv thawj kem ntawm lub rooj zaum hauv qab hydrogen. Zoo li tag nrho cov alkali hlau nws muaj ib qho hluav taws xob valence uas nws yooj yim muab los ua ib qho cation lossis compound. Nyob rau hauv chav tsev kub lithium yog ib tug mos hlau uas yog silvery-dawb nyob rau hauv cov xim
Cov khoos phis tawj siv lej, cov ntaub ntawv thiab cov lus qhia hauv computer los tsim cov xwm txheej ntawm lub ntiaj teb tiag. Lawv kuj tuaj yeem kwv yees tias yuav muaj dab tsi tshwm sim - lossis dab tsi tuaj yeem tshwm sim - hauv cov xwm txheej nyuaj, los ntawm cov txheej txheem huab cua mus rau kev nthuav tawm cov lus xaiv thoob plaws hauv lub nroog
Tus sawv cev lej ntawm Kirchhoff txoj cai yog: ∑nk=1Ik=0 ∑ k = 1 n I k = 0 qhov twg Ik yog qhov tam sim no ntawm k, thiab n yog tag nrho cov xov hlau uas ntws mus rau hauv thiab tawm ntawm kev sib tshuam hauv kev xav. Kirchhoff txoj cai junction yog txwv nyob rau hauv nws muaj feem xyuam rau cov cheeb tsam, nyob rau hauv uas tus nqi ceev yuav tsis tas li
Hardiness Zone: 7-10
Cov qauv ntawm qhov kev sib hloov no yog: RM[x + y - 1][n - x + y] = M[x][y], qhov twg RM txhais tau tias tig matrix, M thawj matrix, thiab n qhov ntev ntawm qhov pib matrix (uas yog nxn). Yog li, a32, los ntawm kab thib peb thiab kab thib ob yuav tau mus rau kab plaub thiab kab plaub
Lub hauv paus yog txheej txheej ntawm cov nroj tsuag hauv thaj chaw hav zoov lossis hav zoov, tshwj xeeb tshaj yog cov ntoo thiab tsob ntoo loj hlob ntawm hav zoov canopy thiab hav zoov. Cov nroj tsuag nyob rau hauv understory muaj xws li assortment ntawm seedlings thiab saplings ntawm canopy ntoo ua ke nrog tshwj xeeb understory shrubs thiab tshuaj ntsuab
Piav txog qhov zoo uas npog dhau, los yog dominates, lwm hom ntawm qhov zoo. Cov xeeb ntxwv uas tshwm sim muaj ib qho phenotype uas yog kev sib xyaw ntawm niam txiv qhov zoo
Loblolly Pine yog ib tsob ntoo siab, loj hlob sai uas tuaj yeem nyob tau ntau dua 150 xyoo. Feem ntau loj hlob txog 2 feet hauv ib xyoos, tsob ntoo qee zaum siab tshaj 100 ko taw tab sis feem ntau loj hlob li 50 txog 80 feet siab. Nws lub cev upright yog li 3 feet dav thiab npog nrog tuab, furrowed, tawv tawv
Bruno rov qab mus rau Ltalis txawm tias muaj kev phom sij nws tau nrog Inquisition hauv lub zog tag nrho thaum nws lub sijhawm. Nws raug ntes thiab raug kaw vim nws qhia nws txoj kev ntseeg. Txawm hais tias nws raug nug thiab raug tsim txom ntau tshaj li yim xyoo, nws tsis kam tso nws lub tswv yim
Partition Postulate Tag nrho yog sib npaug rau cov lej ntawm nws qhov chaw. Hloov Postulate Ib qhov ntau tuaj yeem hloov pauv rau nws qhov sib npaug hauv txhua qhov kev qhia. Division Postulate Yog tias qhov sib npaug sib npaug yog muab faib los ntawm qhov sib npaug nonzero, cov quotients sib npaug. Reflexive Property Ib qhov ntau yog congruent (sib npaug) rau nws tus kheej