Video: Leej twg nrhiav tau auxin thawj?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Auxins yog thawj cov tshuaj hormones nrhiav pom. Charles Darwin yog thawj cov kws tshawb fawb mus dabble hauv kev tshawb fawb cog qoob loo. Hauv nws phau ntawv " Lub zog ntawm kev txav hauv cov nroj tsuag " nthuav tawm xyoo 1880, nws thawj zaug piav qhia txog qhov cuam tshuam ntawm lub teeb ntawm kev txav ntawm canary nyom ( Phalaris canariensis ) coleoptiles.
Tsuas yog li ntawd, leej twg thawj cais auxin?
Lub Dutch biologist Frits Warmolt tau mus ua ntej piav cov auxins thiab lawv lub luag haujlwm hauv kev cog qoob loo hauv xyoo 1920s. Kenneth V. Thimann (1904-1997) los ua tus ua ntej rau cais ib qho ntawm cov phytohormones thiab txiav txim siab nws cov qauv tshuaj raws li indole-3-acetic acid (IAA).
Tsis tas li ntawd, cov tshuaj cog qoob loo twg yog thawj zaug cais tawm ntawm tib neeg cov zis? cov auxins
Ib yam li ntawd, nws tau nug, leej twg nrhiav tau Phototropism?
Charles Darwin
Leej twg nrhiav tau cytokinin?
Cytokinins tau tshawb pom los ntawm F. Skoog , C. Miller thiab cov neeg ua haujlwm sib koom ua ke thaum xyoo 1950 yog qhov tseem ceeb uas txhawb kev faib cell (cytokinesis). Thawj cytokinin pom yog adenine (aminopurine) derivative hu ua kinetin (6-furfuryl- aminopurine; Fig.
Pom zoo:
Leej twg nrhiav tau tus qauv ntawm DNA quizlet?
Cov kws tshawb fawb tau lees paub (Tshaj tawm xyoo 1953 hauv 'Nature') nrog kev tshawb pom ntawm cov qauv ntawm DNA. Txawm hais tias Watson thiab Crick tau txais txiaj ntsig nrog qhov kev tshawb pom, lawv yuav tsis paub txog cov qauv yog lawv tsis pom kev tshawb fawb los ntawm Rosalind Franklin thiab Maurice Wilkins
Leej twg nrhiav tau electron orbitals?
Txawm li cas los xij, lub tswv yim hais tias cov hluav taws xob tuaj yeem hloov mus ib puag ncig ntawm lub hauv paus loj nrog lub zog angular tseeb tau sib cav tsawg kawg yog 19 xyoo dhau los los ntawm Niels Bohr, thiab Japanese physicist Hantaro Nagaoka tau luam tawm ib qho kev xav hauv lub voj voog rau kev coj cwj pwm thaum ntxov li 1904
Leej twg nrhiav tau thawj lub ntsiab?
Txawm hais tias cov ntsiab lus xws li kub, nyiaj, tin, tooj liab, txhuas thiab mercury tau paub txij thaum ancient sij hawm, thawj qhov kev tshawb pom ntawm lub ntsiab tshwm sim nyob rau hauv 1649 thaum Hennig Brand nrhiav phosphorous
Henri Becquerel nrhiav tau dab tsi uas ua rau nws tau txais 1903 Nobel nqi zog Nws nrhiav tau dab tsi txog lub caij uranium?
Teb: Henri Becquerel tau txais ib nrab ntawm qhov khoom plig rau nws qhov kev tshawb pom ntawm cov hluav taws xob tsis zoo. Teb: Marie Curie tau kawm txog cov hluav taws xob ntawm tag nrho cov tebchaw uas muaj cov xov tooj cua paub, suav nrog uranium thiab thorium, uas nws tom qab pom kuj tseem muaj xov tooj cua
Leej twg yog leej niam leej txiv pab txhawb cytoplasmic qub txeeg qub teg?
Nyob rau hauv cov ntaub ntawv ntawm cytoplasmic qub txeeg qub tes, cov teebmeem ntawm niam txiv. Qhov no feem ntau yog vim muaj kev koom tes ntau dua ntawm cytoplasm rau zygote los ntawm niam txiv poj niam dua li txiv neej niam txiv. Feem ntau ovum txhawb ntau cytoplasm rau zygote dua cov phev