Kev zom zaub mov tshwm sim thaum cov zaub mov vacuole tau nrog lub vacuole thib ob, hu ua lysosome, uas muaj cov enzymes digestive zog. Cov zaub mov yog degraded, nws cov zaub mov yog absorbed los ntawm lub cell thiab nws cov khoom pov tseg nyob rau hauv lub digestive vacuole, uas tej zaum yuav tawm hauv lub cell byexocytosis
Hauv lwm lo lus, lub tswv yim lub ntsiab lus yog tus kws tshawb fawb txoj kev nkag siab txog qhov txawv txav hauv nws txoj kev kawm txuas nrog ib leeg. Yog li, nws txheeb xyuas cov kev hloov pauv uas xav tau hauv kev tshawb nrhiav kev tshawb fawb. Lub tswvyim ntawm lub tswvyim yog nyob rau hauv ib tug ntau broad lub moj khaum hu ua theoretical moj khaum
Txhawm rau daws cov lus nug no, koj yuav tsum xub ntxiv ua ke ob qho ntawm qhov sib piv piv txwv li 4 + 2 = 6. Tom qab ntawd koj yuav tsum faib tag nrho cov nyiaj uas siv tus lej xws li 600/6 = 100. Txhawm rau ua kom paub ntau npaum li cas txhua tus neeg tau txais, koj mam li muab lawv faib los ntawm 100
Lub neej keeb kwm yog kev tshawb fawb txog kev xeeb tub cov tswv yim thiab cov yam ntxwv. Piv txwv ntawm lub neej keeb kwm zoo muaj xws li hnub nyoog ntawm thawj kev yug me nyuam, lifespan, thiab tus naj npawb vs loj ntawm cov xeeb ntxwv. Lub neej voj voog ntawm hom yog tag nrho ntawm cov theem thiab tsim cov kab mob mus dhau nws txoj sia
Cov kua dej Newtonian yog cov kua dej uas cov viscous ntxhov siab tshwm sim los ntawm nws cov dej ntws, ntawm txhua qhov chaw, yog linearly correlated rau lub zos strain rate-tus nqi ntawm kev hloov ntawm nws deformation lub sij hawm. Newtonian kua yog cov qauv lej yooj yim tshaj plaws ntawm cov kua dej uas suav nrog viscosity
Hauv cov hlwb nrog lub nucleus, zoo li hauv eukaryotes, lub voj voog ntawm tes kuj tau muab faib ua ob theem tseem ceeb: interphase thiab mitotic (M) theem (xws li mitosis thiab cytokinesis). Thaum lub sij hawm interphase, lub cell loj hlob, accumulating as-ham rau mitosis, thiab undergoes DNA replication npaj nws rau cell division
Tso koj ob lub qhov muag mus rau lub hnub yam tsis muaj kev tiv thaiv qhov muag thaum lub hnub ci dab noj hnub tuaj yeem ua rau "dab noj hnub dig muag" lossis kub hnyiab, los yog hnub ci retinopathy. Qhov raug rau lub teeb no tuaj yeem ua rau muaj kev puas tsuaj lossis ua kom puas cov hlwb hauv retina (rov qab ntawm lub qhov muag) uas xa qhov koj pom mus rau lub hlwb
Hauv N-hom semiconductor, cov khoom siv hluav taws xob feem ntau yog cov neeg nqa khoom thiab qhov yog cov neeg nqa khoom tsawg. Hauv P-hom semiconductor, qhov yog feem ntau cov neeg nqa khoom thiab cov khoom siv hluav taws xob yog cov neeg tsawg. Nws muaj qhov loj dua electron concentration thiab tsawg lub qhov concentration. Nws muaj qhov loj dua qhov concentration thiab tsawg dua electron concentration
ThermOweld® weld hlau yog siv rau vuam tooj liab rau hlau, tooj liab rau hlau hlau thiab tooj liab rau cam khwb cia hlau. Cov txheej txheem thermOweld® tsim kev sib txuas zoo dua yam tsis muaj kev siv hluav taws xob ntau dhau ntawm brazing, arc vuam, lossis vuam. Qhov no yog ib qho tseem ceeb tshwj xeeb tshaj yog rau vuam insulated cables los yog nyias-wall yeeb nkab
Raws li Wallerstein, muaj ntau tshaj nees nkaum lub teb chaws ib nrab, suav nrog Qaib Cov Txwv, Iran, Tuam Tshoj, thiab Russia, tag nrho cov ntawm lawv yog cov tseem ceeb ntawm kev lag luam thiab kev nom kev tswv hauv Central Asia thiab Caucasus
Hauv lwm lo lus, wavelength tsuas yog qhov piv ntawm qhov nrawm rau zaus lossis qhov khoom ntawm qhov nrawm thiab lub sijhawm. Qhov no txhais tau hais tias lub wavelength ntawm ultrasound yog txiav txim los ntawm cov yam ntxwv ntawm ob qho tib si transducer (ntau zaus) thiab cov khoom uas lub suab yog dhau (ceev)
70 mus rau 100 feet
Cov cheeb tsam huab cua nyob ze ntawm txoj kab nruab nrab nrog huab cua sov huab cua yog hu ua tropical. Hauv thaj chaw sov sov, qhov nruab nrab kub hauv lub hli txias tshaj plaws yog 18 ° C. Qhov no yog sov tshaj qhov nruab nrab kub ntawm lub hli warmest nyob rau hauv lub polar cheeb tsam
Koj tuaj yeem siv cov mis sib npaug d = rt uas txhais tau hais tias kev ncua deb sib npaug ntawm lub sijhawm sijhawm. Txhawm rau daws kom nrawm lossis tus nqi siv cov qauv rau kev ceev, s = d / t uas txhais tau tias ceev sib npaug sib npaug ntawm lub sijhawm. Yuav kom daws tau lub sij hawm siv cov mis rau lub sij hawm, t = d / s uas txhais tau hais tias lub sij hawm sib npaug sib npaug zos faib los ntawm ceev
Hla-txuas yog ib daim ntawv cog lus uas txuas ib cov saw hlau polymer mus rau lwm cov saw hlau polymer. Yog li cross-linked polymers yog cov polymers uas tau txais thaum hla kev sib txuas ua ke ntawm monomeric units. Cov ntoo khaub lig-txuas polymer tsim cov saw ntev, ceg ntoo lossis kab, uas tuaj yeem tsim cov kab sib txuas ntawm cov khoom siv polymer
Whereas somatic hlwb raug mitosis rau proliferate, cov kab mob hlwb undergo meiosis los tsim haploid gametes (cov phev thiab qe)
Icecap yog ib hom tshuaj ntsuab uas yuav tsum muaj tus kws kho tsiaj kom muaj 270 los sib sau ua ke thiab tsuas tuaj yeem pom ntawm Winterspring. Txawm hais tias Icecap nyiam huab cua txias, nws tsis tuaj yeem pom nyob qhov twg nrog daus. Yog li ntawd mus rau Winterspring ua liaj ua teb Icecap
Txhawm rau xam tus nqi ntawm lub orbitals los ntawm tus thawj quantum tooj, siv n2. Muaj n2 orbitals rau txhua qib zog. Rau n = 1, muaj 12 lossis ib lub orbital. Rau n = 2, muaj 22 los yog plaub orbitals
Protozoa yog ib pawg ntawm cov kab mob uas tsis yog-phototrophic, unicellular, eukaryotic microorganisms uas tsis muaj phab ntsa ntawm tes. Feem ntau, protozoa muaj ntau theem hauv lawv lub neej. Trophozoite yog lub sijhawm ua haujlwm, xeeb tub, thiab pub mis
Kev sib txhuam yog kev tiv thaiv kev txav ntawm ib qho khoom txav mus rau lwm qhov. Nws tsis yog lub zog tseem ceeb, zoo li lub ntiajteb txawj nqus lossis electromagnetism. Hloov chaw, cov kws tshawb fawb ntseeg tias nws yog qhov tshwm sim ntawm electromagnetic attraction ntawm cov khoom siv hauv ob qhov chaw kov
Peb hom pob zeb tseem ceeb yog igneous, metamorphic thiab sedimentary. Peb txheej txheem uas hloov ib lub pob zeb mus rau lwm qhov yog crystallization, metamorphism, thiab yaig thiab sedimentation. Txhua lub pob zeb tuaj yeem hloov mus rau lwm lub pob zeb los ntawm kev dhau los ntawm ib lossis ntau dua ntawm cov txheej txheem no. Qhov no tsim lub voj voog pob zeb
Triple Award Science (qee zaum hu ua 'Separate Sciences' lossis 'Single Sciences') yog qhov uas cov tub ntxhais kawm kawm tag nrho peb txoj kev tshawb fawb thiab xaus nrog peb GCSEs. Lawv tau txais ob qib GCSE raws li lawv qhov kev ua tau zoo thoob plaws txhua peb yam kev kawm. Qhov no system tau qhia nyob rau hauv 2006
Ferns, lichens, mosses, orchids, thiab bromeliads yog tag nrho cov epiphytes. Cov hav zoov hav zoov kub kub kuj yog tsev rau nepenthes lossis pitcher nroj tsuag. Cov no yog cov nroj tsuag uas loj hlob hauv av. Lawv muaj nplooj uas tsim lub khob qhov chaw noo noo sib sau
Lysosomes rhuav tshem macromolecules rau hauv lawv qhov chaw, uas tom qab ntawd rov ua dua. Cov membrane-bound organelles muaj ntau yam enzymes hu ua hydrolases uas zom tau cov proteins, nucleic acids, lipids, thiab complex suab thaj. Lub lumen ntawm lysosome yog acidic ntau dua li cytoplasm
Vim li cas peb tsis tuaj yeem nyob ntawm Jupiter? A: Jupiter yog cov roj loj heev, uas txhais tau tias tej zaum nws yuav tsis muaj qhov chaw ruaj khov, thiab cov roj uas nws tau ua los ntawm yuav muaj tshuaj lom rau peb. Nws tseem nyob deb heev ntawm lub hnub (hnub ci tuaj yeem siv sijhawm ib teev kom mus txog ntawd) uas txhais tau tias nws txias heev
Yog hais tias koj muaj ib tug daig caliper, lub nres nres yuav tsis kiag li disengage los ntawm tus nto ntawm tus nres rotor. Qhov no txhais tau tias koj yuav tsav tsheb nrog cov brakes siv me ntsis txhua lub sijhawm. Kev tsav tsheb nrog lub caliper daig tuaj yeem tsim kev ntxhov siab ntawm kev sib kis, ua rau nws ua tsis tau ua ntej
Lub xeev oxidation ntawm chlorine hauv perchloric acid yog +7. Raws li perchloric acid yog ib qho nruab nrab, tag nrho cov oxidation naj npawb ntawm cov ntsiab lus nyob rau hauv nws yuav tsum sib npaug zos rau xoom. Raws li hydrogen txuas nrog cov hlau tsis xws li chlorine thiab oxygen, nws nqa +1 oxidation xeev
Cov nqe lus hauv cov teeb no (3) Ib. Cells yog cov qauv tsim thiab kev ua haujlwm ntawm cov khoom muaj sia. Ob. Txhua yam kab mob yog tsim los ntawm cov hlwb. Peb. Tsuas yog cov hlwb uas twb muaj lawm tuaj yeem tsim cov hlwb tshiab
Lub xeev khov kho yog qhov tsis hloov pauv, uas tseem zoo ib yam tom qab kev txhawb nqa / hloov pauv. Thaum lub kaw lus sim ua kom tiav lub xeev khov kho, cov lus teb xav tau ntawm cov cim tshwj xeeb tau ua tiav uas tuaj yeem ua tau raws li kev xav tau raws li lub sijhawm mus rau infinity. Piv txwv li, thaum ib tug nias lub hwj chim khawm incell-phone, xov tooj ntawm tes khau boots
Glacial Pob Zeb Plua plav yog cov khoom ntxhia ntuj uas tsim tawm ntau txhiab xyoo los ntawm kev ua haujlwm glacial. Glacial Pob Zeb Plua plav yog tsim los ntawm ntau hom pob zeb uas muaj cov kab dav dav ntawm cov pob zeb uas tau sau thiab pulverized los ntawm kev nthuav dav / kev cog lus ntawm cov dej khov
Splicing ntawm mRNA nce tus naj npawb ntawm cov protein sib txawv uas lub cev muaj peev xwm tsim tau. Gene qhia yog tswj los ntawm cov proteins uas khi rau cov hauv paus hauv paus hauv DNA. Ib puag ncig ntawm ib lub xovtooj ntawm tes thiab ntawm lub cev muaj feem cuam tshuam rau cov noob caj noob ces
Muaj ntau yam ntawm ib puag ncig uas cuam tshuam rau kev loj hlob ntawm microbial. Lub cev tseem ceeb tshaj plaws yog pH, kub, oxygen, siab, thiab salinity. pH ntsuas seb acidic los yog yooj yim (alkaline) cov tshuaj yog li cas, thiab microbes yuav loj hlob nyob rau hauv acidic, yooj yim, los yog nruab nrab pH
Cov hauj lwm rau biological sciences majors Kev kawm thiab kev tshawb fawb hauv tsev kho mob. Biotechnology. Kev kho hniav. Ecology. Environmental science. Kev lag luam zaub mov. Kev tshawb fawb forensic. Tsoom fwv cov koom haum (FBI, FDA, DNR, NASA, USDA)
Hwj chim Factor. Hauv AC circuits, lub hwj chim yog qhov piv ntawm lub zog tiag tiag uas siv los ua haujlwm thiab lub zog pom tseeb uas tau muab rau hauv Circuit Court. Lub zog muaj peev xwm tuaj yeem tau txais qhov tseem ceeb hauv thaj tsam ntawm 0 txog 1. Thaum tag nrho lub zog yog reactive zog uas tsis muaj hwj chim tiag tiag (feem ntau inductive load) - lub hwj chim yog 0
Cov khoom siv tshuaj. Tus lej atomic qhia tus naj npawb ntawm cov protons nyob rau hauv lub hauv paus ntawm ib lub atom. Thaum lub atom feem ntau yog hluav taws xob nruab nrab, tus lej atomic yuav sib npaug ntawm cov hluav taws xob hauv lub atom, uas tuaj yeem pom nyob ib ncig ntawm lub hauv paus. Cov electrons no feem ntau txiav txim siab txog kev coj tus cwj pwm ntawm ib qho atom
Hauv physics, lo lus lub teeb qee zaum hais txog hluav taws xob hluav taws xob ntawm ib qho wavelength, txawm pom los tsis pom. Hauv qhov kev nkag siab no, gamma rays, X-rays, microwaves thiab xov tooj cua tsis yog lub teeb. Qhov no dual yoj-zoo li thiab particle-zoo li qhov ntawm lub teeb yog hu ua nthwv dej-particle dual
Ib kab lus kaw yog kab lus lej uas paub tias muaj tseeb lossis tsis tseeb. Ib kab lus qhib hauv lej txhais tau hais tias nws siv qhov sib txawv thiab tsis paub tias kab lus lej yog qhov tseeb lossis cuav
Cov hom kev hloov pauv tseem ceeb ntawm chromosome muaj xws li kev hloov pauv, luam tawm, tshem tawm, thiab thim rov qab
Ib lub molecule yog ib pawg nruab nrab ntawm cov atoms uas tau koom ua ke los ntawm ib los yog ntau dua covalent bonds. Qhov twg ntawm cov ntsiab lus no tsis sib koom ua cov molecules: oxygen, chlorine, neon, lossis sulfur? neon vim hais tias nws yog ib tug noble roj thiab tsis xav qhia electrons nrog rau lwm cov atoms
Goode homolosine projection (los yog cuam tshuam Goode homolosine projection) yog ib qho pseudocylindrical, vaj huam sib luag, thaj chaw sib xyaw ua ke siv rau daim ntawv qhia ntiaj teb. Feem ntau nws tau nthuav tawm nrog ntau yam cuam tshuam. Nws cov vaj tse vaj huam sib luag ua rau nws muaj txiaj ntsig zoo rau kev nthuav qhia spatial faib ntawm cov xwm txheej