Video: Cov tshuaj ntawm lub neej yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Los ntawm qhov muaj zog tshaj plaws xiav whale mus rau feem ntau miniscule paramecium, lub neej raws li peb paub tias nws yuav siv cov ntaub ntawv sib txawv heev. Txawm li cas los xij, tag nrho cov kab mob tau tsim los ntawm tib 6 cov khoom xyaw tseem ceeb: carbon, hydrogen, nitrogen, oxygen, phosphorus thiab sulfur (CHNOPS). Vim li cas cov ntsiab lus?
Ua li no, 4 yam tshuaj ntawm lub neej yog dab tsi?
Tag nrho lub neej yog tsim los ntawm cov plaub macromolecule tsev blocks: carbohydrates, lipids, proteins, thiab nucleic acids. Cov kev sib cuam tshuam ntawm cov polymers sib txawv ntawm cov qauv molecule yooj yim no ua rau feem ntau ntawm lub neej qauv thiab kev ua haujlwm.
Qhov thib ob, 7 lub ntsiab ntawm lub neej yog dab tsi? Cov neeg ua tau zoo heev ntsuas lawv tus kheej ntawm xya qhov tseem ceeb cov ntsiab lus , Kev Noj Qab Haus Huv, Tsev Neeg, Kev Sib Raug Zoo, Nyiaj Txiag, Kev Lag Luam, Kev Ntseeg thiab Kev Ntseeg. Lawv sim ua kom muaj kev sib npaug ntawm cov no cov ntsiab lus ua neej nyob noj qab nyob zoo lub neej.
Qhov thib ob, chemistry ntawm lub neej yog dab tsi?
Cov ntsiab lus carbon, hydrogen, nitrogen, oxygen, sulfur, thiab phosphorus yog lub tsev tseem ceeb ntawm cov tshuaj muaj nyob hauv cov khoom muaj sia.
Puas yog dej yog tshuaj lom neeg ntawm lub neej?
Hauv luv, lub chemistry ntawm lub neej yog dej chemistry . Dej yog universal, superb hnyav vim lub cim polarity ntawm lub dej molecule thiab nws nyiam tsim hydrogen bonds nrog rau lwm cov molecules. Ib dej molecule, qhia nrog cov tshuaj Lub cim H2O, muaj 2 hydrogen atoms thiab 1 oxygen atom.
Pom zoo:
Dab tsi yog cov nyhuv tshuaj ntawm hluav taws xob muab qee qhov piv txwv ntawm cov nyhuv tshuaj?
Ib qho piv txwv ntawm cov tshuaj muaj zog hauv cov hluav taws xob tam sim no yog electroplating. Hauv cov txheej txheem no, muaj cov kua dej uas muaj hluav taws xob dhau mus. qhov no yog ib qho piv txwv ntawm kev siv tshuaj lom neeg hauv hluav taws xob tam sim no
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua
Dab tsi yog tshuaj lom neeg cov tshuaj tiv thaiv thiab cov tshuaj tiv thaiv lub cev?
Qhov sib txawv ntawm cov tshuaj tiv thaiv lub cev thiab cov tshuaj tiv thaiv tshuaj yog muaj pes tsawg leeg. Hauv cov tshuaj tiv thaiv tshuaj, muaj kev hloov pauv ntawm cov tshuaj hauv nqe lus nug; nyob rau hauv ib qho kev hloov ntawm lub cev muaj qhov sib txawv ntawm qhov tsos, tsis hnov tsw, los yog cov duab yooj yim ntawm cov qauv ntawm cov teeb meem yam tsis muaj kev hloov pauv hauv cov ntsiab lus
Lub neej voj voog ntawm fern txawv ntawm lub neej voj voog ntawm moss li cas?
Qhov txawv: -- Mosses yog cov nroj tsuag uas tsis muaj vascular; ferns yog vascular. - Gametophyte yog lub cim tseem ceeb hauv mosses; sporophyte yog lub cim tseem ceeb hauv ferns. - Mosses muaj cov txiv neej thiab poj niam sib cais gametophytes; fern gametophytes muaj txiv neej thiab poj niam qhov chaw ntawm tib tsob nroj
Dab tsi yog qhov txawv ntawm keeb kwm ntawm lub neej thiab lub neej voj voog?
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