Video: Dab tsi yog ob sab ntawm DNA tuav ua ke?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov nitrogenous bases ntawm lub ob strands ntawm DNA ua ke, purine nrog pyrimidine (A nrog T, G nrog C), thiab yog tuav ua ke los ntawm qaug zog hydrogen bonds. Watson thiab Crick pom qhov ntawd DNA muaj ob sab , los yog strands, thiab hais tias cov strands tau twisted ua ke zoo li ib tug twisted ntaiv - ob helix.
Xav txog qhov no, dab tsi tuav cov hauv paus ua ke hauv DNA?
Nucleotides hauv a puag khub yog complementary uas txhais tau hais tias lawv cov duab tso cai rau lawv sib raug zoo ua ke nrog hydrogen bonds. Lub hydrogen bonding ntawm complementary bases tuav ob txoj hlua ntawm DNA ua ke . Hydrogen bonds tsis yog chemical bonds. Lawv tuaj yeem cuam tshuam tau yooj yim.
dab tsi tuav ob sab ntawm DNA ntaiv ua ke quizlet? Ob txoj hlua ntawm DNA tuav ua ke nrog hydrogen bonds ntawm nitrogen hauv paus. Cov no yog cov tsis muaj zog bonds ntawm polar molecules.
Kuj Paub, yuav ua li cas ntxiv strands ntawm DNA tuav ua ke?
Txhua molecule ntawm DNA yog ob lub helix tsim los ntawm ob complementary strands ntawm nucleotides tuav ua ke los ntawm hydrogen bonds ntawm G-C thiab A-T puag khub. Cov ntaub ntawv genetic khaws cia rau hauv lub cev DNA muaj cov lus qhia rau tag nrho cov proteins uas lub cev yuav puas synthesize.
Dab tsi yog cov lus ntawm DNA rau ribosomes?
Neeg xa xov liaison RNA (mRNA), molecule hauv hlwb uas nqa codes los ntawm DNA nyob rau hauv lub nucleus mus rau qhov chaw ntawm protein synthesis nyob rau hauv lub cytoplasm (the cov ribosomes ).
Pom zoo:
Dab tsi yog equidistant los ntawm peb sab ntawm daim duab peb sab?
Lub ntsiab lus uas sib npaug rau txhua sab ntawm daim duab peb sab yog hu ua incenter: Ib qho nruab nrab yog ib qho kab uas muaj ib qho ntawm nws qhov kawg ntawm lub vertex ntawm daim duab peb sab thiab lwm qhov kawg ntawm qhov nruab nrab ntawm sab opposite lub vertex. Peb qhov nruab nrab ntawm ib daim duab peb sab sib ntsib hauv centroid
Dab tsi yog kev saib xyuas ntawm kev ruaj ntseg sab hauv txawm tias muaj kev hloov pauv hauv ib puag ncig sab nraud?
Kev saib xyuas ntawm kev ruaj ntseg sab hauv txawm tias muaj kev hloov pauv hauv ib puag ncig sab nraud yog hu ua homeostasis
Vim li cas nws thiaj li hais tias lub Orthocenter ntawm daim duab peb sab obtuse yuav tsum nyob rau sab nraud ntawm daim duab peb sab?
Nws hloov tawm tias tag nrho peb qhov siab ib txwm sib tshuam ntawm tib lub ntsiab lus - lub npe hu ua orthocenter ntawm daim duab peb sab. Lub orthocenter tsis yog ib txwm nyob hauv daim duab peb sab. Yog tias daim duab peb sab yog obtuse, nws yuav nyob sab nraud. Txhawm rau ua kom qhov no tshwm sim cov kab qhov siab yuav tsum tau txuas ntxiv kom lawv hla
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 kev sib raug zoo ntawm sab nrauv thiab sab hauv lub kaum sab xis ntawm daim duab peb sab?
Cov kaum sab hauv yog hu ua Sab hauv cov ces kaum. Cov lej ntawm cov kaum sab hauv ntawm daim duab peb sab yog ib txwm 180 degrees. Lub kaum sab nrauv yog lub kaum sab xis ntawm ib sab ntawm ib qho duab, thiab ib txoj kab txuas ntxiv los ntawm sab tom ntej. Qhov sib npaug ntawm lub kaum sab nrauv thiab nws lub kaum sab hauv uas nyob ib sab kuj yog 180 degrees