Muaj ob hom purine: Adenine thiab Guanine. Ob qho no tshwm sim hauv DNA thiab RNA. Muaj peb hom pyrimidines, tab sis tsuas yog ib qho ntawm lawv muaj nyob hauv DNA thiab RNA: Cytosine. Lwm ob yog Uracil, uas yog RNA nkaus xwb, thiab Thymine, uas yog DNA tshwj xeeb
Qhov sib npaug ntawm cov lus yuav yog: qabzib + oxygen → carbon dioxide + dej + zog. Qhov sib npaug yog tsim los ntawm kev sib txuas peb cov txheej txheem hauv qab no rau hauv ib qho kev sib npaug: Glycolysis - kev tawg ntawm daim ntawv ntawm cov piam thaj molecule rau hauv ob peb-carbon molecules xws li pyruvate (pyruvic acid)
Lub zog uas tsis khaws lub zog yog hu ua nonconservative lossis dissipative rog. Kev sib txhuam yog lub zog tsis ruaj khov, thiab muaj lwm yam. Kev sib txhuam-hom quab yuam, zoo li huab cua tsis kam, yog lub zog tsis muaj zog. Lub zog uas nws tshem tawm los ntawm lub system yog tsis muaj nyob rau hauv lub system rau kineticenergy
Yog hais tias muaj sparking ua raws li nram no. Clean commutator nrog CRC 'hu rau tus nqus tsev vacuum'. Xyuas kom paub tseeb tias tsis muaj qhov tsis sib xws ntawm cov commutator. Tshawb xyuas cov txhuam hniav los ntawm kev ntsuas qhov ntev. Tshawb xyuas qib zoo ntawm cov txhuam hniav. Tshawb xyuas commutator ncej bearings rau kev ua si. Xyuas tias lub cev muaj zog tsis qias neeg hauv esp
Cov deposits terrigenous yog cov uas pom nyob rau hauv lub continental rhawv thiab slopes thiab mas muaj xws li cov pob zeb khoom muab los ntawm kev hnav thiab tsim kua muag. Cov pelagic deposits yog cov uas pom nyob rau hauv lub hiav txwv plains tob thiab qhov tob. Cov deposits feem ntau muaj cov organic seem ntawm cov nroj tsuag thiab tsiaj txhu
ob hom Yog li ntawd, dab tsi yog 2 hom electrochemical hlwb? Ob hom ntawm Cell Muaj ob tsim nyog hom electrochemical cell : galvanic thiab electrolytic. Galvanic hlwb hloov tshuaj muaj peev xwm zog rau hauv hluav taws xob hluav taws xob.
Ib qho kev sib tham Punnett Square isthedihybrid cross. Ib tug dihybrid cross lem obtraits.Ob niam txiv yog heterozygous, thiab ib tug allele rau txhua tus cwj pwm ua tiav dominance *. Qhov no txhais tau hais tias ob leeg niam txiv muaj cov alleles recessive, tab sis nthuav tawm thedominantphenotype
DNA muaj tus nqi tsis zoo vim yog tus nqi qis ntawm nws cov phosphate tivthaiv. Phosphate txuas cov suab thaj, hu ua deoxyribose thiab los ntawm DNA ordeoxyribonucleic acid tau txais nws lub npe, los ua cov pob txha ntawm txhua txoj hlua ntawm DNA. Txhua qab zib yog txuas mus rau tom ntej los ntawm pawg aphosphate
A Geographic Situation Nyob rau hauv cov nqe lus ntawm thaj chaw, ib qho xwm txheej lossis qhov chaw hais txog qhov chaw ntawm qhov chaw raws li nws qhov kev sib raug zoo rau lwm qhov chaw, xws li San Francisco qhov xwm txheej yog qhov chaw nres nkoj nkag rau ntawm ntug dej hiav txwv Pacific, nyob ib sab ntawm California cov av ua liaj ua teb
Txiav txim siab qhov attenuation coefficient ntawm cov khoom. Qhov no tuaj yeem pom hauv lub rooj ntawm attenuation coefficient lossis los ntawm cov chaw tsim khoom ntawm cov khoom. Faib 0.693 los ntawm attenuation coefficient los txiav txim HVL. Cov mis nyuj ib nrab nqi yog HVL = = 0.693/Μ
Qhov kev sim Nirenberg thiab Matthaei yog qhov kev sim tshawb fawb tau ua rau lub Tsib Hlis 15, 1961, los ntawm Marshall W. Qhov kev sim txiav txim siab thawj zaug ntawm 64 triplet codons hauv cov kab mob caj ces los ntawm kev siv nucleic acid homopolymers los txhais cov amino acids tshwj xeeb
Cov ntaub ntawv raug nug hauv chav kuaj ua txhaum cai yog nruab nrog lub tshuab ntsuas ntsuas, ntsuas cov duab digital, infrared thiab ultraviolet lub teeb ci, cov cuab yeej tshuaj ntsuam video thiab cov cuab yeej tshwj xeeb suav nrog cov khoom siv hluav taws xob tshawb pom electrostatic (EDD) thiab cov khoom siv los ua chemistry
Cov khoom ntiag tug ntawm kev sib faib: Cov khoom ntawm 1 thiab ib tus lej yog tus lej ntawd. Piv txwv li, 7 × 1 = 7 7 imes 1 = 7 7 × 1 = 77, x, 1, sib npaug, 7
Cov noob yog hu ua cov noob caj noob ces nws yog vim lawv nqa cov ntaub ntawv keeb kwm ntawm cov niam txiv rau cov menyuam yaus / tawm ntawm qhov chaw. Cov kab mob tshwm sim: Cov noob muaj nyob hauv chromosomes ntawm DNA. Cov noob muaj cov cim los ntawm niam txiv mus rau cov xeeb ntxwv uas yog lub luag haujlwm rau kev hloov pauv ntawm tus cwj pwm keeb kwm yav dhau los
1. Yog tias 'kov' txhais tau hais tias ob lub atoms cuam tshuam ib leeg, ces atoms yeej ib txwm kov. Cov electrons uas ua rau cov seem ntawm theatom raug khi rau lub nucleus los ntawm lub zog electromagnetic.Atoms raug khi rau hauv cov molecules, thiab cov molecules raug khi rau txhua hnub khoom los ntawm lub zog electromagnetic
Txog. Tropical rainforests muaj nyob rau hauv qhov kub tshaj plaws ntawm lub ntiaj teb no: qaum teb sab hnub tuaj Australia, Amazonia, Central America, Africa, Southeast Asia thiab New Guinea. Muaj ob peb rainforests nyob rau hauv txias qhov chaw ntawm lub ntiaj teb no hu ua temperate rainforests
Qhov ntom ntom ntsuas cov khoom muaj nyob hauv ib yam khoom. Meanwhile, ntim muaj kev txhawj xeeb txog qhov chaw uas ib yam khoom occupies. 4. Cov qauv kev ntom ntom rau cov khoom siv los yog peb-dimensional muaj ob yam khoom - loj thiab ntim. Hauv qhov kev pom no, ntim yog ib feem ntawm qhov ntom ntom
Cacti zoo yoog rau kev ciaj sia nyob hauv suab puam. Cov spines tseem tiv thaiv cov cacti los ntawm cov tsiaj uas yuav noj lawv. tuab heev, waxy cuticle kom txo tau dej los ntawm evaporation. Txo tus naj npawb ntawm stomata kom txo cov dej poob los ntawm transpiration
Homology saib qhov zoo sib xws uas muaj nyob rau hauv cov kab mob nyob rau hauv thiaj li yuav txiav txim seb ib tug poj koob yawm txwv. Qhov zoo sib xws tuaj yeem yog nyob rau hauv cov noob, cov tsos mob ntawm lub cev lossis kev ua haujlwm ntawm cov qauv. Piv txwv ntawm qhov no suav nrog cov ceg pem hauv ntej ntawm cov noog, puav, tib neeg thiab lizards vim lawv muaj tib lub qauv
Mitosis yog cov txheej txheem uas cov nucleus ntawm eukaryotic cell faib. Thaum lub sijhawm txheej txheem no, tus muam chromatids cais tawm ntawm ib leeg thiab txav mus rau cov ncej ntawm tes. Qhov no tshwm sim nyob rau hauv plaub theem, hu ua prophase, metaphase, anaphase, thiab telophase
Hauv hluav taws xob engineering, hauv av lossis lub ntiaj teb yog qhov taw qhia nyob rau hauv hluav taws xob hluav taws xob los ntawm qhov ntsuas hluav taws xob, ib qho kev rov qab los rau hluav taws xob tam sim no, lossis kev sib txuas ncaj qha rau lub ntiaj teb
Cov duab zoo yog cov duab ntawm cov khoom tiag tiag (xws li lub qhov rais ncej). Cov duab tsis zoo yog qhov chaw nyob nruab nrab ntawm cov khoom (xws li qhov chaw nyob hauv lub qhov rais ncej)
Photosynthesis yog cov txheej txheem los ntawm cov kab mob uas muaj cov xim chlorophyll hloov lub teeb lub zog rau hauv cov tshuaj siv zog uas tuaj yeem khaws cia rau hauv cov khoom sib txuas ntawm cov organic molecules (piv txwv li, suab thaj)
Plume yog hais txog txoj hauv kev thiab qhov chaw nyob rau hauv cov huab cua ntawm gaseous effluents tso tawm los ntawm ib qhov chaw feem ntau yog ib pawg (chimney) Tus cwj pwm ntawm ib tug plume emissions los ntawm tej pawg nyob rau hauv localized huab cua stability. Kev coj tus cwj pwm thiab kev tawg ntawm ib qho plumeentirely nyob ntawm ib puag ncig lapserate (ELR)
Cov cim thiab cov npe ntawm qee yam Polyatomic Ions thiab Ib Molecule NH4 + ammonium ion hydroxide ion NO3- nitrate ion chlorate ion NO2- nitrite ion chlorite ion PO43- phosphate ion hypochlorite ion
Dej yog hu ua 'universal solvent' vim hais tias nws muaj peev xwm ntawm dissolving ntau tshaj li lwm yam kua. Qhov no tseem ceeb heev rau txhua yam muaj sia nyob hauv ntiaj teb. Nws txhais tau hais tias txhua qhov chaw dej mus, los ntawm huab cua, hauv av, lossis los ntawm peb lub cev, nws yuav siv cov tshuaj muaj txiaj ntsig, cov zaub mov, thiab cov as-ham
Underground Earth-Sheltered Homes Thaum tag nrho lub ntiaj teb-sheltered lub tsev yog tsim hauv qab qib los yog tag nrho underground, nws yog hu ua ib tug underground qauv. Lub tsev zoo li no tau ua tiav hauv qab av ntawm qhov chaw tiaj tus, thiab cov chaw nyob loj nyob ib puag ncig lub tshav dav hlau sab nraum zoov
Taw qhia. Yog tias qhov sib piv ntawm ib qhov ntev mus rau lwm qhov yog 1: 2, qhov no txhais tau tias qhov ntev thib ob yog ob zaug loj dua li thawj. Yog hais tias ib tug me nyuam tub muaj 5 khoom qab zib thiab ib tug ntxhais muaj 3, qhov piv ntawm tus tub cov khoom qab zib rau tus ntxhais cov khoom qab zib yog 5: 3
Abiotic yam muaj xws li qhov chaw, dej, thiab kev nyab xeeb. Lub peev xwm nqa tau ntawm ib puag ncig yog mus txog thaum tus naj npawb ntawm kev yug me nyuam sib npaug ntawm cov neeg tuag. Ib qho limiting yam txiav txim siab nqa lub peev xwm rau ib hom
Txhawm rau ua TNT, tso 5 rab phom thiab 4 xuab zeb rau hauv daim phiaj 3x3. Thaum ua TNT, nws yog ib qho tseem ceeb uas cov hmoov phom thiab xuab zeb tau muab tso rau hauv cov qauv raws li cov duab hauv qab no. Hauv thawj kab, yuav tsum muaj 1 rab phom hmoov rau hauv lub thawv thawj, 1 xuab zeb hauv lub thawv thib ob, thiab 1 rab phom hmoov hauv lub thawv thib peb
VIDEO Hais txog qhov no, koj siv lub ntsuas hluav taws xob Sperry li cas? Yuav Siv Sperry Voltmeter li cas Txuas txhua qhov kev xeem coj (kev sojntsuam) mus rau lub tswv yim tsim nyog. Teem lub function dial rau hom ntsuas qhov xav tau.
Tsis tsuas yog lub ntug dej hiav txwv nruab nrab hloov pauv thaj chaw ntawm Iceland, nws tseem yog lub luag haujlwm rau kev ua haujlwm volcanic uas tsim cov kob. Raws li ob daim hlau tectonic hloov, fissures ib ntus tsim nyob rau hauv lub crust uas tso cai rau molten pob zeb los ntawm underground mus rau saum npoo li lava, tsim Iceland ntau volcanoes
Rau HOCl Lewis qauv, xam tag nrho cov valence electrons rau HOCl molecule. Tom qab txiav txim siab pes tsawg valence electrons muaj nyob rau hauv HOCl, muab lawv nyob ib ncig ntawm lub hauv paus atom kom tiav cov octets. Muaj tag nrho ntawm 14 valence electrons hauv Lewis qauv rau HOCl
Lub nucleotide muaj peb yam: Lub hauv paus nitrogenous, uas tuaj yeem yog adenine, guanine, cytosine, lossis thymine (nyob rau hauv rooj plaub ntawm RNA, thymine yog hloov byuracil). Ib tug tsib-carbon qab zib, hu ua deoxyribose vim nws tsis muaj oxygen pawg ntawm ib qho ntawm nws cov carbons. Ib lossis ntau pawg phosphate
Cov cuab yeej tseem ceeb siv los ntawm astronomers yog telescopes, spectrographs, spacecrafts, koob yees duab, thiab computers. Astronomers siv ntau hom telescopes los soj ntsuam cov khoom hauv ntiaj teb
Yog li nws cov atoms muaj 3 protons. Lub atom nruab nrab muaj qhov sib npaug ntawm cov protons thiab electrons, yog li lub nruab nrab Li atom kuj muaj 3 electrons. Kev teeb tsa hluav taws xob ntawm Li yog 1s22s1. Yog li koj tuaj yeem pom tias muaj 2 sab hauv electrons hauv 1s sublevel
Muaj peb yam yooj yim ntawm symmetry: rotational symmetry, reflection symmetry, thiab point symmetry
Aluminium oxide yog ib qho ionic compound, tab sis txhuas chloride tsuas yog ionic nyob rau hauv cov khoom hauv lub xeev ntawm qhov kub thiab txias. Thaum kub dua nws ua covalent
Koj tuaj yeem tshawb xyuas Hooke Txoj Cai los ntawm kev ntsuas seb muaj zog npaum li cas ncav lub caij nplooj ntoos hlav. Ib txoj hauv kev yooj yim los siv lub zog uas paub tseeb yog cia qhov hnyav ntawm qhov paub qhov hnyav yog lub zog siv los ncab lub caij nplooj ntoos hlav. Lub zog tuaj yeem suav los ntawm W = mg
Cell qauv yog siv los faib cov kab mob mus rau hauv Domains thiab Kingdoms. - Cov qauv ntawm tes siv li cas los faib cov kab mob mus rau hauv pawg taxonomic? Cov kab mob tuaj yeem raug cais thiab muab tso rau hauv Domains los ntawm lawv cov yam ntxwv