2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Dinoflagellate luciferin yog chlorophyll derivative (piv txwv li tetrapyrrole) thiab muaj nyob hauv qee cov dinoflagellates, uas feem ntau yog lub luag haujlwm rau qhov tshwm sim ntawm hmo ntuj glowing nthwv dej (keeb kwm qhov no hu ua phosphorescence., tab sis yog lo lus dag).
Luciferase nyob qhov twg?
Luciferase yog lub teeb tsim cov enzyme ib txwm muaj nyob hauv kab hluav taws thiab hauv cov kab mob hauv hiav txwv thiab cov kab mob hauv av.
tib neeg puas tsim cov luciferin?
Raws li kev tshawb fawb tau ua nyob rau xyoo 2009 los ntawm cov kws tshawb fawb Nyij Pooj, tib neeg bioluminescence nyob rau hauv pom lub teeb muaj tshwm sim- nws tsuas yog dim dhau rau peb lub qhov muag tsis muaj zog tuaj tos. "Lub cev tib neeg lub cev ua kom pom tseeb," pab pawg los ntawm Tohoku Institute of Technology tau sau rau hauv lawv txoj kev tshawb fawb luam tawm hauv PLOS One.
Luciferin siv qhov twg?
Luciferin yog siv, piv txwv li, hauv tus neeg sau xov xwm gene tshuaj ntsuam xyuas los kawm txog kev tswj cov noob thiab kev ua haujlwmqhov kev qhia ntawm tus neeg sau xov xwm luciferin-tagged yog tus cim qhia txog kev ua tiav ntawm cov noob. ntawm kev txaus siab rau cov txheej txheem DNA recombinant.
Koj ua li cas thiaj ua tau luciferin?
Npaj ib 200X luciferin cov tshuaj tov (30 mg / ml) hauv dej tsis muaj menyuam. Sib tov maj mam los ntawm inversion kom txog thaum luciferin tiavyaj. Siv tam sim ntawd, lossis aliquot thiab khov ntawm -20 ° C rau yav tom ntej siv.
Pom zoo:
Qhov khoom nyob rau pem hauv ntej ntawm lub lens diverging nyob qhov twg?
Teb: Dav hlau daim iav Dav Hlau Daim iav Rau lub teeb rays tawm lub dav hlau daim iav, lub lub kaum sab xis ntawm kev xav sib npaug ntawm lub kaum sab xis ntawm qhov xwm txheej. … Daim duab tsim los ntawm daim iav dav hlau yog ib txwm virtual (lub ntsiab lus tias lub teeb rays tsis yog los ntawm daim duab), upright, thiab ntawm tib lub duab thiab loj npaum li cov khoom nws yog reflecting.
Qhov chaw ncig tebchaws nyob hauv bhagalpur nyob qhov twg?
Bhagalpur faib lub zos yog ib pawg tswj hwm thaj chaw ntawm Bihar xeev ntawm Is Nrias teb, nrog Bhagalpur ua thawj coj hauv paus chaw haujlwm. Raws li xyoo 2005, qhov kev faib muaj xws li Bhagalpur koog tsev kawm ntawv, thiab Banka koog tsev kawm ntawv thiab nyob rau ntawm ntug dej ntawm Ganga River.
Kev tsis ncaj ncees nyob qhov twg yog qhov hem rau kev ncaj ncees nyob txhua qhov chaw?
Martin Luther King tau hais tias: “Kev tsis ncaj ncees nyob txhua qhov chaw yog kev hem thawj rau kev ncaj ncees nyob txhua qhov chaw. Peb raug ntes nyob rau hauv ib tug inescapable network ntawm kev sib nrig sib pab, khi nyob rau hauv ib lub tsoos tsho ntawm txoj hmoo.
Qhov twg yog qhov tsis txaus ntseeg nyob qhov twg?
Yuav muaj ob lub cev tsis zoo nyob rau hauv lub midbrain. Lawv yog symmetrically positioned, ib tug nyob rau ntawm ob sab ntawm lub midline ntawm lub hlwb, thiab lawv tsim ob lub pob nyob rau hauv lub posterior nto ntawm lub paj hlwb nyob rau hauv qab ntawm lub superior colliculi.
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
