Txhua lub tebchaws muaj nws tus yam ntxwv, uas koj tuaj yeem yooj yim txiav txim siab nws koom nrog ib pab pawg. Piv txwv li, Irish yog txawv los ntawm cov plaub hau liab, thiab cov British los ntawm ib tug dryish physique thiab me me nta. Tab sis cov neeg Nyij Pooj sawv tawm ntawm lwm cov neeg Esxias nrog lawv qhov me me thiab qhov hnyav. Koj puas tau xav tias yog vim li cas qhov nruab nrab qhov siab ntawm cov neeg Nyij Pooj tsis tshaj 165 centimeters? Dab tsi yog qhov zais cia ntawm lawv qhov me me?
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Raws li ib txwm muaj, thaum nws nkag mus rau hauv lub cev, cawv sai sai decomposes rau hauv metabolites (cov khoom tsis muaj tshuaj lom metabolic). Thaum haus cawv thaum noj ntau yam tshuaj, muaj qhov tshwm sim loj heev. Cov no suav nrog cov tshuaj tiv thaiv zoo li disulfiram
Hnub no, tej zaum, koj yuav tsis ntsib tus neeg uas tsis paub tias pheromones yog dab tsi. Perfume nrog pheromones, "saroma of seduction" thiab tsis hnov tsw ntawm kev hlub yog cov ntsiab lus dav siv los ntawm cov neeg lag luam thiab cov tshaj tawm. Lub olfactory system, uas yog lub luag haujlwm rau kev lees paub ntawm cov tshuaj tiv thaiv tsis haum xeeb cuam tshuam nrog kev sib deev thiab niam txiv instincts, tswj cov neuroendocrine thiab kev coj tus cwj pwm, hu ua vomeronasal
Nyob hauv heraldry, muaj cuaj feem ntau lees txais cov cim. Tsis tas li ntawd, armorial shields yog dai kom zoo nkauj nrog ntau cov duab thiab cov khoom zoo nkauj
Phenotiazine derivatives: kev piav qhia dav dav, lub cev thiab tshuaj lom neeg. Kev faib cov tshuaj. Cov lus piav qhia luv luv ntawm cov pab pawg tseem ceeb thiab cov neeg sawv cev zoo ib yam. Cov kab mob uas siv cov tshuaj no. Contraindications thiab phiv. Pharmacokinetics
Cov kab lus piav qhia txog dab tsi paradoxes yog, muab piv txwv ntawm lawv thiab sib tham txog lawv cov ntau hom
Quantum teleportation yog ib qho ntawm cov txheej txheem tseem ceeb tshaj plaws hauv quantum cov ntaub ntawv. Raws li lub cev muaj peev xwm ntawm entanglement, nws ua lub luag haujlwm tseem ceeb ntawm ntau yam ntaub ntawv ua haujlwm thiab yog ib feem tseem ceeb ntawm quantum technologies, ua lub luag haujlwm tseem ceeb hauv kev txhim kho ntxiv ntawm quantum xam, tes hauj lwm thiab kev sib txuas lus
Tus Nobel nqi zog yog paub thoob plaws ntiaj teb. Tab sis dab tsi yog nws qhov loj me thiab nws tshwm sim li cas, tsis yog txhua tus paub, txawm hais tias txhua yam no yeej tsim nyog tau txais kev saib xyuas thiab kev txaus siab
Nobel Alfred - tus kws tshawb fawb Swedish zoo tshaj plaws, tus tsim khoom ntawm dynamite, kws tshaj lij, kws tshuaj ntsuam xyuas, Ph.D., kws tshaj lij, tus tsim ntawm Nobel nqi zog, uas ua rau nws nto moo hauv ntiaj teb
Petrified ntoo yog cov khoom tsim los ntawm cov ntoo uas loj hlob nyob rau yav dhau los geological epochs. Tsab ntawv no tham txog cov yam ntxwv ntawm kev kawm, khoom thiab kev siv ntawm lub pob zeb tshwj xeeb no
Dab tsi yog ricochet? Lo lus no tuaj qhov twg los? Kev txhais lus ntawm lub ntsiab lus thiab cov piv txwv ntawm qhov tshwm sim ntawm lub neej niaj hnub tos tus nyeem ntawv hauv kab lus no
Nebula Nebula yog ib yam khoom nto moo tshaj plaws nyob rau saum ntuj. Nyob rau hauv cov duab coj txawm tias siv cov amateur telescopes, nws zoo li impressive heev. Cov khoom no yog dab tsi thiab nws puas zoo li nyob rau hauv cov duab ib txwm muaj nyob rau hauv qhov chaw kho qhov muag?
Cov leeg nqaij ntawm lub cev ua haujlwm tseem ceeb tshaj plaws: zom thiab ua kom zoo. Nws feem ntau cuam tshuam qhov tshwm sim ntawm qhov mob ntawm ntau yam keeb kwm: mob taub hau, toothache. Kev ntsuas tau ua tau nyob rau hauv uas cov leeg clamps thiab cov ntsiab lus mob tuaj yeem raug tshem tawm
Roman tus lej yog ib qho piv txwv ntawm tus lej tsis yog txoj haujlwm, peb paub tam sim no. Tsis tas li ntawd, Roman system yog nquag siv, tab sis tsis yog rau kev suav lej, tab sis rau kev ua haujlwm nqaim. Piv txwv li, siv cov lej Roman, nws yog kev cai los xaiv cov hnub keeb kwm, ntau pua xyoo, cov lej ntawm cov ntawv, ntu thiab tshooj hauv phau ntawv tshaj tawm
Lub ntiaj teb ib puag ncig yog cov kab mob sib txuas uas txhua yam txheej txheem thiab cov xwm txheej ntawm animate thiab inanimate xwm tshwm sim vim li cas. Cov kws tshawb fawb tau ua pov thawj tias txawm tias cov kev cuam tshuam me me ntawm tib neeg ua rau muaj kev hloov pauv loj heev. evaporation yog dab tsi? Qhov no yog ib qho tshwm sim uas, nyob rau hauv ib lub sij hawm, ib yam khoom yog hloov los ntawm cov kua mus rau hauv ib tug vapor los yog roj. Cov nyhuv thim rov qab ntawm cov txheej txheem no yog hu ua condensation
Botany, zoo li lub npe ntawm ntau lwm yam kev tshawb fawb, muaj Greek keeb kwm. "Botany" - ib tug derivative ntawm lo lus "botane", nws txhais tau tias txhua yam hais txog cov nroj tsuag. Yog li ntawd, xav paub yog vim li cas kev tshawb fawb ntawm cov nroj tsuag hu ua botany, cov lus teb yuav tsum tau nrhiav nyob rau hauv Greek keeb kwm ntawm lub systematization ntawm kev paub txog cov nroj tsuag ntiaj teb no nyob rau hauv daim ntawv ntawm science
Cov khoom noj khoom haus muaj ib qho qauv. Nws suav nrog cov neeg tsim khoom, cov neeg siv khoom (ntawm thawj, thib ob xaj, thiab lwm yam) thiab decomposers. Ntau ntxiv txog cov neeg siv khoom yuav tau tham hauv kab lus. Txhawm rau kom nkag siab tob txog leej twg cov neeg siv khoom ntawm qhov kev txiav txim thib 1, thib 2 thiab dhau los yog, peb ua ntej luv luv xav txog cov qauv ntawm cov khoom noj khoom haus
Aminocarboxylic acids (amino acids) yog cov hlaws hauv cov saw hlau protein ntawm txhua yam kabmob muaj sia. Tab sis ob peb tus neeg paub tias yuav luag tag nrho lawv tau pom nyob rau hauv ib nrab ntawm lub xyoo pua xeem. Cov biogenic sulfur-muaj cov amino acids txaus siab rau peb hauv kab lus no yog cysteine thiab methionine. Cia peb sim ua kom cov neeg nyeem ntawv paub txog cov organic tebchaw no los ntawm qhov pom ntawm biochemistry thiab biology ntawm peb txoj kev noj qab haus huv
Histology ntawm txoj kev ua pa yog ib feem tseem ceeb ntawm biology uas tso cai rau koj nkag siab txog cov yam ntxwv ntawm lub cev muaj sia
Ib feem tseem ceeb ntawm cov ntsiab lus ntawm lub cell nucleus yog sawv cev los ntawm cov xov zoo li DNA molecules ntawm ntau qib ntawm compaction ua ke nrog cov proteins. Cov no yog euchromatin (decondensed DNA) thiab heterochromatin (densely packed pieces of DNA). Euchromatin plays lub luag haujlwm tseem ceeb hauv lub neej ntawm tes. Nws nyeem "kev qhia" rau kev sib dhos ntawm ribonucleic acid (RNA), uas dhau los ua lub hauv paus rau kev sib txuas ntawm polypeptide molecules
Lub hauv paus ntsiab lus ntawm kev tswj tsis tiav tau tshawb pom ntau tom qab ntau dua li cov qauv ntawm kev qub txeeg qub teg los ntawm G. Mendel. Hom kev sib cuam tshuam ntawm alleles no txhais tau hais tias cov neeg zoo li qhov nruab nrab ntawm qhov sib txawv ntawm niam txiv cov kab ntshiab
Los ntawm kev tshawb pom ntawm cov hlwb mus rau kev tsim ntawm lub xeev tam sim no ntawm kev xav ntawm tes, ntau dua 400 xyoo dhau los. Thawj zaug lub xovtooj tau tshawb xyuas hauv 1665 los ntawm tus kws tshaj lij los ntawm Askiv Robert Hooke. Pom cov qauv ntawm tes ntawm ib ntu ntawm cork, nws muab lawv lub npe ntawm cov hlwb
Genetic (cytogenetic) hom kev ntsuas, nrog rau lwm tus, yog siv los txheeb xyuas cov pab pawg theem pib, txhawm rau txheeb xyuas lub xeev ntawm ib hom. Hauv kab lus no, peb yuav xav txog cov yam ntxwv ntawm cov txheej txheem, nrog rau cov teeb meem uas tus kws tshawb fawb yuav ntsib thaum siv nws
Txhua lub xov tooj ntawm tes muaj cov txheej txheem uas ua rau nws ua kom pom tag nrho cov khoom ntawm lub cev muaj sia. Txhawm rau ua haujlwm kom zoo, lub xovtooj ntawm tes yuav tsum tau txais cov as-ham txaus, rhuav tshem lawv thiab tso tawm lub zog, uas yog siv los txhawb kev ua neej
Lub Denver thiab Paris cov txheej txheem ntawm kev faib tawm ntawm cov khoom siv los ntawm cov cuab yeej cuab tam, dav siv hauv zej zog kev tshawb fawb, yog tsim los koom ua ke thiab nthuav dav tswv yim txog karyotype. Ib txoj hauv kev zoo tshaj plaws yog xav tau rau qhov tseeb kev nthuav qhia thiab kev txhais cov txiaj ntsig ntawm kev tshawb fawb hauv thaj chaw ntawm noob caj noob ces, karyosystematics, yug me nyuam
Hlau yog siv nyob rau hauv ntau qhov chaw ntawm peb lub neej. Lawv siv hauv kev lag luam, tsim, hauv tsev, hauv cov hniav nyiaj hniav kub, kev tsim kho, thiab tshuaj. Nyob rau tib lub sijhawm, malleability yog ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws uas txiav txim siab lub peev xwm ntawm cov hlau los tiv thaiv kev ua haujlwm. Nws nyob ntawm dab tsi? Nws tshwm sim li cas? Cia peb kawm paub
Lub raum ua haujlwm li cas thiab yog dab tsi? Cov lus nug yog qhov nthuav heev. Peb txhua tus paub kwv yees li cas lub cev nws yog, tab sis nws tsis zoo li feem ntau yuav muaj peev xwm muab cov ntsiab lus tseeb. Zoo, nws tsim nyog kho qhov no thiab qhia txhua qhov tseem ceeb tshaj plaws thiab tseem ceeb ntawm lub cev
Thaum piav txog kev loj hlob ntawm cov kab mob nyob, cov ntsiab lus "protostomes" thiab "deuterostomes" feem ntau tuaj yeem pom. Cov no yog tag nrho cov kab mob multicellular uas twb muaj lawm, tshwj tsis yog rau cov coelenterates, uas txawv ntawm qib embryonic
Hnub no, thaum cov menyuam yaus pib tau txais kev kawm ib puag ncig hauv tsev kawm ntawv theem pib, thiab cov teeb meem ib puag ncig tsis yog qhov kawg hauv kev tshaj tawm, ecology tseem yog ib tug hluas, complex thiab mysterious science. Nws lub hauv paus kev tshawb fawb tsis zoo li ntawd, thiab cov qauv kev sib txawv yog qhov sib txawv. Txawm li cas los xij, kev paub thiab kev nkag siab ntawm cov kev cai yooj yim hauv cheeb tsam no yog lub hauv paus ntawm lub ntiaj teb kev pom ntawm ib tug neeg niaj hnub no
A particle accelerator yog ib qho khoom siv uas tsim cov kab hluav taws xob uas muaj hluav taws xob atomic lossis subatomic hais txav ntawm qhov nrawm nrawm. Lub hauv paus ntawm nws txoj haujlwm yog kev nce hauv lawv lub zog los ntawm lub tshav pob hluav taws xob thiab kev hloov pauv hauv txoj hauv kev los ntawm cov hlau nplaum
Cold fusion kuj hu ua txias fusion. Nws lub ntsiab lus yog nyob rau hauv qhov muaj peev xwm ntawm kev paub txog cov tshuaj tiv thaiv nuclear fusion tshwm sim hauv txhua lub tshuab tshuaj
Rau ntau, kev kawm chemistry yog kev tsim txom tiag tiag. Tab sis yog tias koj nkag siab nws tsawg kawg me ntsis, ces koj tuaj yeem ua qhov kev sim lom zem thiab txaus siab rau nws. Yog lawm, thiab cov kws qhia ntawv yuav tsis mob siab rau lawv cov menyuam kawm ntawv. Rau qhov no, hu ua pharaoh nab yog zoo meej
Neoclassical synthesis koom nrog kev kawm txog tam sim no ntawm cov txheej txheem tsim khoom los ntawm ntau lub kaum ntse ntse
Cov qauv ntawm cov ntaub so ntswg epithelial ntawm tib neeg thiab tsiaj txhu feem ntau yog vim nws qhov chaw nyob. Cov ntaub so ntswg epithelial yog cov ciam teb ntawm cov cell hauv ob sab hauv lub cev, mucous daim nyias nyias ntawm lub cev thiab kab noj hniav. Tsis tas li ntawd, ntau cov qog hauv lub cev yog tsim los ntawm cov epithelium
Bryophytes tseem hu ua mosses tseeb lossis bryophytes. Txhua hom sib sau ua ke nyob rau hauv txog 700 genera, uas, nyob rau hauv lem, muaj txog li 120 tsev neeg
Leej twg yog cov tub rog? Qhov no yog cov chav kawm sab saud uas muaj nyob rau hauv Russia los ntawm 10th mus rau 17th caug xyoo. Cov chav kawm muaj cai kuj suav nrog cov thawj coj loj thiab tshwj xeeb
Ricinoleic acid: piav qhia ntawm cov khoom, lub cev thiab tshuaj lom neeg. Txoj kev tau txais thiab nws cov derivatives. Daim ntawv thov nyob rau hauv cov tshuaj, tshuaj thiab tshuaj pleev ib ce industries. Cov nyhuv ntawm ricinoleic acid rau cov kab mob nyob
Root yog lub hauv paus axial ntawm cov nroj tsuag, uas yog qhov tseem ceeb tshaj plaws ntawm lawv, lawv lub ntsiab vegetative organ. Tsab ntawv no tham txog cov hauv paus hniav thiab hom kab mob hauv paus, nrog rau lawv cov yam ntxwv tshwj xeeb
Dab tsi yog amber, dab tsi lub cev thiab tshuaj muaj zog nws muaj. Dab tsi yog qhov ntom ntawm amber thiab nws nyob ntawm dab tsi. Lwm cov txiaj ntsig zoo ntawm cov ntxhia
Robert Andrews Milliken, uas nws phau ntawv keeb kwm luv luv yuav qhia rau koj mloog hauv tsab xov xwm, yug rau lub Peb Hlis 22, 1868, hauv nroog Morrison, uas nyob hauv Illinois. Nws txiv, Silas Franklin Milliken, yog ib tug txiv plig nyob rau hauv lub Koom Txoos Congregational, nws niam, Mary Jane Milliken, ua hauj lwm ntev los ua tus thawj tswj hwm ntawm Olivet College, uas nyob hauv Michigan. Tsis tas li ntawd, ntxiv rau Robert, tsev neeg muaj ob tug tub ntxiv thiab peb tus ntxhais