Lub Angle Addition Postulate hais tias: Yog tias point B nyob rau sab hauv ntawm lub kaum sab xis AOC, tom qab ntawd. thawj cov ces kaum
Cov hlau yaj yog feem ntau yog Fe (OH) 2 + (aq) nyob rau hauv acidic thiab nruab nrab, oxygen-nplua nuj tej yam kev mob. Nyob rau hauv cov xwm txheej tsis zoo oxygen nws feem ntau tshwm sim li binary hlau. Hlau yog ib feem ntawm ntau cov organic thiab inorganic chelation complexes uas feem ntau yog dej soluble
Puab - Round (coccus), qws zoo li (bacillus), comma-puab (vibrio) los yog kauv (spirilla / spirochete) Cell phab ntsa muaj pes tsawg leeg - Gram-positive (thick peptidoglycan txheej) los yog Gram-negative (lipopolysaccharide txheej) Gaseous yuav tsum tau - Anaerobic (obligate los yog facultative) los yog aerobic
Photosynthesis siv lub zog ntawm lub hnub ci los hloov dej thiab carbon dioxide rau cov suab thaj thiab oxygen. siv ATP, NADPH +, thiab carbon dioxide los ntawm huab cua los ua suab thaj rau cov nroj tsuag. Nws tshwm sim hauv stroma
Nyob rau hauv ib txoj kab los yog capillary ntawm lub tshuab sequencing mus sib tov ntawm DNA los ntawm tag nrho plaub pawg. Vim hais tias me me molecules txav los ntawm cov gel sai dua, cov DNA daim los ntawm cov gel nyob rau hauv qhov kev txiav txim ntawm loj-txhua daim ib puag ncig ntev dua qhov kawg
Qhov sib cais ntawm lub teeb dawb rau hauv nws cov xim xim ntawm kev hla dhau ntawm qhov nruab nrab refracting zoo li iav prism hu ua dispersion ntawm lub teeb. Lub dispersion ntawm lub teeb dawb tshwm sim vim cov xim sib txawv ntawm lub teeb khoov los ntawm cov ces kaum sib txawv nrog rau qhov teeb meem ntawm lub teeb, raws li lawv dhau los ntawm lub prism
Isotopes ntawm ib lub ntsiab lus qhia tib tus naj npawb ntawm protons tab sis muaj cov lej sib txawv ntawm neutrons. Cia peb siv carbon ua piv txwv. Muaj peb lub isotopes ntawm carbon pom nyob rau hauv cov xwm - carbon-12, carbon-13, thiab carbon-14. Tag nrho peb muaj rau protons, tab sis lawv cov lej neutron - 6, 7, thiab 8, raws li - txhua qhov sib txawv
peb atoms Hauv qhov no, pes tsawg oxygen atoms nyob rau hauv ib lub molecule ntawm dej? Cov tshuaj formula rau dej yog H 2 O uas txhais tau tias txhua molecule ntawm dej muaj 2 atom ua ntawm hydrogen (H) thiab ib atom ntawm oxygen (O).
Helium feem ntau yog siv los ua cov pa lifting hauv cov khoom siv hluav taws xob sib zog dua. Thaum Ntiaj Teb Tsov Rog II, qhov kev thov tau nce ntxiv rau helium rau nqa cov pa roj thiab tiv thaiv arc vuam. Lub helium huab hwm coj spectrometer kuj tseem ceeb heev hauv atomic foob pob Manhattan Project
Cov kab yog ib txwm nyob rau Tebchaws Europe, thawj zaug kis ntau yam ntawm millet, nrog rau cov pob kws pob kws. European pob kws borer tau tshaj tawm thawj zaug hauv North America xyoo 1917 hauv Massachusetts, tab sis tej zaum tau qhia los ntawm Tebchaws Europe ntau xyoo dhau los
Deodar. los yog deo·dar·a. npe. Ib tsob ntoo siab siab () ib txwm nyob rau toj siab Himalaya thiab muaj cov ceg ntoo thiab cov nplooj ntsuab ntsuab tsaus, feem ntau nrog dawb, lub teeb ntsuab, lossis daj tshiab loj hlob hauv cultivars. Nws yog ib tsob ntoo tseem ceeb hauv Is Nrias teb
Hidden Figures yog 2016 American biographical ua yeeb yaj kiab zaj duab xis qhia los ntawm Theodore Melfi thiab sau los ntawm Melfi thiab Allison Schroeder. Cov yeeb yaj kiab hnub qub Taraji P. Henson ua Katherine Johnson, tus kws lej lej uas suav cov kev ya davhlau rau Project Mercury thiab lwm yam haujlwm
National Geographic
Rau cov nroj tsuag suab puam thiab tsiaj txhu, cov ntaub ntawv muaj ntau txawm tias dej tsis txaus. Bilby los yog Bandicoot. Arabian Camel. Suab puam Iguana. Sidewinder nab. Suab puam Tortoise. Creosote Bush. Tsob Ntoo Mesquite
Tsis muaj txoj sia - Hmoob. Hauv cov ntsiab lus, cov teeb meem tsis muaj sia nyob, zoo li qhov sib txawv nrog cov teeb meem nyob, yog ib lo lus siv los piav qhia txog kev noj cov khoom siv atomic rau hauv cov kab mob lom rau cov metabolism lossis cov atoms thiab cov molecules precursor rau cov tshuaj tiv thaiv lossis cov txheej txheem uas ua rau thawj daim ntawv hypothetical. ntawm lub neej
Txhawm rau txiav txim siab, yog koj tuaj yeem loj hlob sequoia hauv koj lub tiaj nraum qaum tsev, koj tsuas yog xav txog qhov yuav tshwm sim mus ntev rau kev tswj hwm tsob ntoo thaum nws loj heev. Giant Sequoias thiab Coast Redwoods yog cov ntoo loj tshaj plaws hauv ntiaj teb
Loj hlob koj cov potted cypress ntoo hauv qhov dej zoo, xuab zeb / loamy av. Txhawm rau hloov cov av, siv peat, txog li 50 feem pua ntawm cov sib tov. Muab tsob ntoo tso rau hauv ib cheeb tsam uas tau txais lub hnub thaum sawv ntxov thiab lub teeb ntxoov ntxoo thaum tav su. Dej koj lub potted cypress ntoo tob, thiab ua kom cov av noo
DNA yog ob-stranded molecule, thaum RNA yog ib leeg-stranded molecule. DNA yog ruaj khov nyob rau hauv alkaline tej yam kev mob, thaum RNA tsis ruaj khov. DNA thiab RNA puag khub sib txawv me ntsis vim DNA siv lub hauv paus adenine, thymine, cytosine, thiab guanine; RNA siv adenine, uracil, cytosine, thiab guanine
Kev hloov pauv tom qab kev txhais lus (PTMs) xws li glycosylation thiab phosphorylation ua lub luag haujlwm tseem ceeb ntawm kev ua haujlwm ntawm hemostatic proteins thiab tseem ceeb heev hauv kev teeb tsa kab mob. Xws li theem nrab hloov pauv rau cov proteins hemostatic muaj ntau yam cuam tshuam rau lawv lub peev xwm los cuam tshuam nrog lwm cov proteins
Ib qho ntawm qhov zoo ntawm parametric sib npaug yog tias lawv tuaj yeem siv los ua cov duab nkhaus uas tsis ua haujlwm, zoo li lub voj voog tsev. Lwm qhov kom zoo dua ntawm parametric sib npaug yog qhov parameter tuaj yeem siv los sawv cev qee yam muaj txiaj ntsig thiab yog li muab cov ntaub ntawv ntxiv rau peb txog daim duab
Pub koj cov ntoo thuv mini nrog txhua lub hom phiaj cog chiv txhua txhua hli. Siv 1 teaspoon ntawm dej-soluble, sib npaug, ua tiav chiv, xws li 15-15-15, nrog 1 nkas loos dej, thiab dej ib txwm. Repot koj tus ntoo thuv mini yog tias nws dhau los ua cag
Camillo Golgi, (yug Lub Xya Hli 7, 1843/44, Corteno, Ltalis-tuag Lub Ib Hlis 21, 1926, Pavia), Italian kws kho mob thiab kws kho mob cytologist uas nws tshawb xyuas cov qauv zoo ntawm lub paj hlwb tau txais nws (nrog Spanish histologist SantiagoRamón y Cajal) lub 1906 Nobel nqi zog rau Physiology lossis Tshuaj
Lub peev xwm built-in (ntawm 300 K) sib npaug fi = kT/q ln(1016 x 9 x 1017/ni2) = 0.77 V, siv kT/q = 25.84 mV thiab ni = 1010 cm-3. Lub peev xwm ua tau (ntawm 100 ° C) sib npaug fi = kT/q ln(1016 x 9 x 1017/ni2) = 0.673 V, siv kT/q = 32.14 mV thiab ni = 8.55 x 1011 cm-3 (los ntawm Piv txwv 20)
VIDEO Ib yam li ntawd, koj xav tau cov ntaub ntawv dab tsi los ua ib lub cell? Txoj Kev 4 Tsim ib lub cev tsis yog tsiaj txhu uas tsis tuaj yeem noj tau tawm ntawm cov khoom siv hauv tsev Ua qauv av nplaum lossis ua si-doh hauv ntau xim sib txawv.
4 protons, 5 neutrons, thiab 4 electrons nyob rau hauv ib tug atom ntawm beryllium
SF6 molecular geometry Sulfur hexafluoride muaj lub hauv paus sulfur atom nyob ib puag ncig uas ib tus tuaj yeem pom 12 electrons lossis 6 electron khub. Yog li, SF6 electron geometry yog suav tias yog octahedral. Tag nrho F-S-F daim ntawv cog lus yog 90 degrees, thiab nws tsis muaj ib khub
Weddle's Rule yog ib txoj hauv kev sib koom ua ke, Newton-Cotes mis nrog N = 6. QHIA: ? Numerical integration yog tus txheej txheem ntawm kev xam tus nqi ntawm cov ntsiab lus tseeb los ntawm cov txheej txheem ntawm tus lej ntawm qhov sib xyaw. Cov txheej txheem qee zaum hu ua mechanical quadrature
Lub ntsiab lus ntawm semipermeable .: ib nrab tab sis tsis pub dawb los yog tag nrho permeable tshwj xeeb: permeable rau qee qhov feem ntau me me molecules tab sis tsis yog rau lwm qhov feem ntau loj dua ib lub semipermeable membrane
Yog tias muaj nuj nqi txuas ntxiv ntawm txhua tus nqi hauv ib ntu, ces peb hais tias qhov kev ua haujlwm txuas mus ntxiv hauv lub sijhawm ntawd. Thiab yog hais tias ib tug muaj nuj nqi yog tas mus li nyob rau hauv ib tug luv luv lub sij hawm, ces peb tsuas hu nws ib tug tas mus li muaj nuj nqi. Calculus yog qhov tseem ceeb ntawm kev ua haujlwm uas txuas ntxiv ntawm txhua tus nqi hauv lawv cov thawj
Peb twb tau tham txog cov ntaub ntawv butan-2-ol ntxiv rau nplooj ntawv, thiab koj paub tias nws muaj optical isomers. Qhov thib ob carbon atom (ib qho nrog -OH txuas) muaj plaub pawg sib txawv nyob ib puag ncig nws, thiab yog li ntawd yog lub chaw chiral. Plaub pawg sib txawv nyob ib ncig ntawm cov pa roj carbon atom txhais tau hais tias nws yog qhov chaw chiral
Ib daim duab kab ke qhia pom cov khoom sib cuam tshuam uas tau teem rau hauv lub sijhawm ua ntu zus. Nws piav qhia txog cov khoom thiab cov chav kawm koom nrog hauv qhov xwm txheej thiab cov kab lus sib txuas ntawm cov khoom xav tau los ua haujlwm ntawm qhov xwm txheej. Cov kab kos kab ke qee zaum hu ua cov duab kos duab lossis xwm txheej xwm txheej
Thaum nws los txog rau pom lub teeb, cov xim ntau zaus, uas yog violet, kuj muaj lub zog tshaj plaws. Qhov qis tshaj plaws ntawm lub teeb pom kev, uas yog liab, muaj lub zog tsawg tshaj plaws
Molecular solids - Ua los ntawm atoms ormolecules tuav ua ke los ntawm London dispersion rog, dipole-dipoleforces, los yog hydrogen bonds. Ib qho piv txwv ntawm molecular solidis sucrose. Covalent-network (tseem hu ua atomic) cov khoom-ua los ntawm cov atoms txuas nrog covalentbonds; cov intermolecular rog yog covalent bonds thiab
Txiav cov ntawv daj rau hauv ib daim hlab thiab muab cov hlua khi rau sab nraud ntawm Styrofoam cov duab (tab sis tsis yog lub ntsej muag uas yog thawj zaug nyob rau hauv kev sib cuag nrog lwm ib nrab ntawm lub pob) los sawv cev rau lub cell membrane. Ntxiv lwm txheej mus rau sab nraud ntawm tes siv daim ntawv ntsuab los sawv cev ntawm phab ntsa sab nraud
Cov txiaj ntsig tau ntawm 'y' yog hu ua qhov ntau. Theoretical domains thiab ranges kam nrog txhua qhov kev daws teeb meem. Cov tswv yim tswv yim thiab thaj tsam nqaim cov kev daws teeb meem kom muaj tseeb nyob rau hauv cov kev txwv
Activated Carriers: Vim li cas chemical zog cia yog 'statistic' Activated carriers yog molecules uas yuav muab faib (C → A + B) tso tawm dawb zog tab sis tsuas yog yog hais tias muaj ntau tshaj ntawm C txheeb ze rau nws equilibrium concnetration. Cov piv txwv tseem ceeb yog ATP, GTP, NADH, FADH2, thiab NADPH
3d3 4s 2 Ib yam li ntawd, qhov twg ntawm cov kev teeb tsa loj loj hauv qab no yog qhov tseeb rau hlau? Yog li, raws li cov cai ntawm yuav ua li cas sau lub orbitals, hluav taws xob kev teeb tsa ntawm hlau (piv txwv li) yog 1s2 2s2 2p6 3s2 3p6 4s2 3d6, thiab nws yog abbreviated daim ntawv [Ar] 4s2 3d6.
Ib hom kab mob dav dav muaj peev xwm vam meej hauv ntau yam ntawm ib puag ncig thiab tuaj yeem siv ntau yam kev sib txawv (piv txwv li, heterotroph nrog ntau yam khoom noj). Ib hom kab mob tshwj xeeb tuaj yeem vam khom tsuas yog hauv qhov nqaim ntawm ib puag ncig ib puag ncig lossis muaj kev noj haus tsawg
Daim ntawv thiab muaj nuj nqi. Yuav kom ciaj sia, loj hlob, thiab yug me nyuam, tus tsiaj yuav tsum nrhiav zaub mov, dej, thiab oxygen, thiab nws yuav tsum tshem tawm cov khoom pov tseg ntawm cov metabolism. Cov kab mob hauv nruab nrog cev yog ib yam ntawm txhua tus tab sis qhov yooj yim tshaj plaws ntawm cov tsiaj muaj los ntawm cov neeg tshwj xeeb rau ib qho haujlwm rau cov neeg koom nrog ntau
Ecology yog kev kawm txog kev sib raug zoo ntawm cov khoom muaj sia thiab lawv ib puag ncig, lossis ib puag ncig. Cov kws tshawb fawb uas ua haujlwm hauv ecology hu ua ecologists. Ecologists tshuaj xyuas seb cov tsiaj nyob li cas nyob ntawm ib leeg rau kev ciaj sia