2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib lub xovtooj tshwj xeeb pom hauv nitrogen-fixing cyanobacteria . Heterocysts yog cov hlwb loj nrog cov phab ntsa tuab thiab lawv tsis muaj chlorophyll, ua rau lawv tsis muaj xim. Lawv yog qhov chaw ntawm nitrogen fixation, uas lawv tsim cov enzyme nitrogenase nitrogenase MoFe protein yog ib tug heterotetramer uas muaj ob α subunits thiab ob β subunits, nrog ib tug loj ntawm kwv yees li 240-250kDa. https://en.wikipedia.org › wiki › Nitrogenase
Nitrogase - Wikipedia
Dab tsi yog heterocysts qhov twg lawv pom Chav Kawm 11?
Hint: Heterocysts yog cov hlwb tsis muaj xim pom nyob rau hauv cyanobacteria uas ua raws li qhov chaw rau kev kho nitrogen. Kev sib txuas Plasmodesmata txuas cov hlwb no nrog cov hlwb nyob ib puag ncig thiab pab lawv kom tau txais cov as-ham los ntawm lawv.
Yuav ua li cas hu ua heterocysts?
Heterocysts (Daim duab 3(c), 3(g), thiab 3(i)) yog morphologically txawv hlwb uas txhim kho teb rau qhov tsis muaj cov khoom siv nitrogen sib xyaw hauv ib puag ncig. … Heterocysts yog tib lub hlwb uas qhia txog nif (nitrogen fixation) noob thiab synthesize nitrogenase hauv heterocyst-forming cyanobacteria.
heterocyst thiab piv txwv yog dab tsi?
Piv txwv li, heterocysts: tsim peb phab ntsa cell ntxiv, suav nrog ib qho ntawm glycolipid uas ua rau hydrophobic barrier rau oxygen. tsim nitrogenase thiab lwm yam proteins koom nrognitrogen fixation. … muaj cov polar plugs uas muaj xws li cyanophycin uas ua rau qeeb cell-to-cell diffusion.
Yuav ua li cas heterocysts tsim?
Thaum heterocyst-forming cyanobacteria tau loj hlob nrog cov nitrogen ruaj khov, lawv cov hlwb ("cov hlwb"), koom ua ke hauv filaments, tshwm sib npaug. Thaum cov filaments ntawm Anabaena yog deprived ntawm taag nitrogen, cov hlwb ntawm semiregular intervals raws filaments sib txawv rau hauv heterocysts.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Dab tsi yog qhov pom pom ntawm haiv neeg Asmeskas kev cai ywj pheej?
Cov kev pabcuam pej xeem zoo tshaj hauv Tebchaws Meskas. Dab tsi yog qhov pom pom ntawm Native American quasi-sovereignty? Thaum xyoo 1990, nees nkaum-peb lub xeev tau dhau txoj cai: ua lus Askiv ua hom lus. Dab tsi yog cov tub ntxhais kawm tawm tsam uas tau tuav Tiananmen Square hauv Beijing thaum Lub Rau Hli 1989 thov quizlet?
Dab tsi yog qhov pom pom tau?
Subvisible particles feem ntau txhais tau tias yog particles uas loj dhau rau kev tshuaj xyuas los ntawm qhov loj me tsis suav nrog chromatography (SEC) (piv txwv li, ~ > 0.1 μm), tab sis me me dhau los pom. rau qhov muag tsis pom kev (piv txwv li, <
Dab tsi yog qhov txawv ntawm kev pom thiab pom?
Kev nkag siab yog qhov koj txhais. Nws yog koj txoj kev nkag siab txog qhov xwm txheej, tus neeg, lossis khoom. Nws yog lub ntsiab lus koj muab rau txhua qhov kev txhawb nqa. Txoj kev xav yog koj qhov kev xav. Koj siv lo lus pom zoo li cas?
Gibbers yog dab tsi thiab lawv pom nyob qhov twg?
Gibber, pob zeb- thiab pebble-littered cheeb tsam ntawm arid lossis semi-arid lub teb chaws hauv Australia. … Lub npog pob zeb tsuas yog ib qho pob zeb sib sib zog nqus, los yog nws yuav muaj ob peb txheej faus rau hauv cov khoom zoo uas tau xav tias tau tawg rau hauv.
