Video: Puas yog qhov kev hloov pauv yog ib qho kev tawm dag zog?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rigid zog yog lwm lub npe hu ua a nruj transformation thiab tshwm sim thaum ib qho taw tes lossis khoom txav mus, tab sis qhov loj thiab cov duab tseem zoo ib yam. Qhov no txawv ntawm cov tsis- nruj zog , zoo li dilation, qhov loj ntawm cov khoom tuaj yeem nce lossis txo.
Ua raws li qhov no hauv kev txiav txim siab, koj yuav qhia li cas yog tias kev hloov pauv yog ib qho kev sib tw nruj?
A nruj zog yog a kev hloov pauv (ntawm lub dav hlau) uas "preserves nrug". Hauv lwm lo lus, yog A yog xa / maped / hloov mus rau A' thiab B xa mus rau B', ces qhov kev ncua deb ntawm A thiab B (qhov ntev ntawm ntu AB) yog tib yam li qhov kev ncua deb ntawm A' thiab B' (qhov ntev ntawm ntu A 'B').
Tsis tas li ntawd, qhov kev hloov pauv twg yog daim ntawv ntawm cov lus tsa suab thiab swb ib daim duab? txhais lus
Tib neeg kuj nug, puas yog txhua qhov kev txhais lus suav hais tias yog ib qho kev sib tw nruj?
b) tus txheeb ze txoj hauj lwm ntawm cov ntsiab lus nyob twj ywm tib yam. Muaj plaub hom nruj zog tias peb yuav xav txog : txhais lus , rotation, reflection, thiab glide reflection. Hauv ib txhais lus , txhua yam yog txav los ntawm tib tus nqi thiab nyob rau hauv tib txoj kev. Txhua txhais lus muaj kev taw qhia thiab kev ncua deb.
Puas yog qhov dilation yog ib qho piv txwv ntawm kev ua kom nruj?
A dilation tsis suav tias yog ib nruj zog vim nws tsis khaws qhov kev ncua deb ntawm cov ntsiab lus. Hauv qab a dilation qhov twg, thiab,, uas txhais tau tias yuav tsum muaj qhov ntev ntau dua lossis tsawg dua. Nyob rau hauv daim duab hauv qab no, yog cov duab ntawm nyob rau hauv ib qho kev hloov pauv ntawm lub dav hlau.
Pom zoo:
Dab tsi yog qhov kev hloov pauv hloov pauv?
Kev hloov pauv, hauv molecular biology, yog hais txog kev hloov pauv hauv deoxyribonucleic acid (DNA), qhov twg ib qho (ob lub nplhaib) purine hloov pauv rau (ib lub nplhaib) pyrimidine, los yog vice versa
Dab tsi yog qhov txawv ntawm ib puag ncig kev hloov pauv thiab kev hloov pauv qub txeeg qub teg?
Qhov sib txawv ntawm cov yam ntxwv ntawm cov tib neeg ntawm tib hom yog hu ua variation. Qhov no yog inherited variation. Qee qhov kev hloov pauv yog qhov tshwm sim ntawm qhov sib txawv ntawm ib puag ncig, lossis ib tus neeg ua dab tsi. Qhov no yog hu ua environmental variation
Dab tsi tsim cov roj siab thiab nws hloov pauv li cas nrog kev hloov pauv hauv kinetic zog?
Gas siab yog tshwm sim los ntawm kev sib tsoo ntawm cov khoom siv roj nrog rau sab hauv ntawm lub thawv thaum lawv sib tsoo nrog thiab tawm dag zog rau ntawm phab ntsa ntim. Tom qab ntawd cov roj yog cua sov. Raws li qhov kub ntawm cov roj nce, cov khoom tau nce lub zog kinetic thiab lawv cov nrawm nrawm
Thaum ib qho kev sib cais ua rau muaj kev hloov pauv hloov pauv ntawm lub ntiaj teb nce ntxiv?
Txij li thaum lub kaw lus raug cais tawm, tsis muaj cua sov tuaj yeem khiav tawm (tus txheej txheem yog li adiabatic), yog li thaum lub zog ntws tawm hauv lub cev, qhov entropy ntawm qhov system nce, piv txwv li Δ Ssys> 0. Yog li ntawd, lub entropy ntawm lub system yuav tsum tau nce rau ib tug spontaneous txheej txheem nyob rau hauv no cais system
Puas yog kev tshem tawm ib qho kev hloov pauv?
Kev rho tawm kev hloov pauv tshwm sim thaum ib feem ntawm DNA molecule tsis tau theej thaum lub sijhawm DNA rov ua dua. Hauv ib qho kev hloov pauv ib qho yuam kev tshwm sim hauv ib qho nucleotide. Tag nrho lub hauv paus khub yuav ploj, lossis tsuas yog lub hauv paus nitrogenous ntawm tus tswv strand. Rau cov ntsiab lus tshem tawm, ib qho nucleotide tau raug tshem tawm ntawm qhov sib lawv liag