2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Meiosis tshwm sim hauv cov kab mob primordial, cov hlwb tau teev tseg rau kev sib deev thiab cais tawm ntawm lub cev lub cev somatic. Nyob rau hauv kev npaj rau meiosis, ib tug kab mob cell mus los ntawm interphase, thaum lub sij hawm uas tag nrho cov cell (xws li cov noob caj noob ces muaj nyob rau hauv lub nucleus) undergoes replication.
Meiosis tshwm sim nyob qhov twg thiab thaum twg hauv tib neeg?
Hauv tib neeg, meiosis yog cov txheej txheem uas cov phev hlwb thiab qe qe raug tsim. Hauv txiv neej, meiosis tshwm sim tom qab puberty. Diploid cells nyob rau hauv cov qog ntshav meiosis los tsim cov phev haploid nrog 23 chromosomes. Ib leeg diploid cell yields plaub haploid phev hlwb los ntawm meiosis.
meiosis yog dab tsi thiab nws tshwm sim nyob qhov twg?
Meiosis yog txheej txheem uas ib lub xov tooj sib faib ob zaug los tsim plaub lub hlwb uas muaj ib nrab ntawm cov ntaub ntawv keeb kwm yav dhau los . Cov hlwb no yog peb cov poj niam cev xeeb tub - phev hauv txiv neej, qe hauv poj niam. Thaum lub sij hawm meiosis ib cell? faib ob zaug los ua plaub tus ntxhais.
Meiosis tshwm sim hauv cell dab tsi?
Kev faib tshwj xeeb ntawm chromosomes hu ua meiosis tshwm sim thaum lub sijhawm tsim cov qe menyuam, lossis gametes, ntawm cov kab mob sib deev. Gametes xws li ova, phev, thiab paj ntoos pib ua cov kab mob, uas, zoo li lwm hom hlwb, muaj ob daim ntawv luam ntawm txhua tus noob hauv lawv cov nuclei.
mitosis thiab meiosis tshwm sim nyob qhov twg?
Mitosis tshwm sim hauv cov hlwb somatic; Qhov no txhais tau hais tias nws yuav siv qhov chaw nyob rau hauv txhua hom hlwb uas tsis koom nrog hauv kev tsim cov gametes. Ua ntej txhua qhov kev faib mitotic, ib daim qauv ntawm txhua tus chromosome yog tsim; Yog li, tom qab kev faib tawm, ib pawg ua tiav ntawm chromosomes pom nyob rau hauv lub nucleus ntawm txhua lub cell tshiab.
Pom zoo:
Puas yog rov tshwm sim dua lossis rov tshwm sim dua?
Reoccur thiab recur yog verbs uas qhia ib lo lus hauv paus. Thaum lawv nyob ze heev ntawm lub ntsiab lus, lawv tsis zoo ib yam. Tej yam uas yog rov tshwm sim dua thiab dhau mus, tej zaum nyob rau ib ntus. Hauv qhov sib piv, ib yam dab tsi uas rov tshwm sim tsuas yog tshwm sim dua tab sis tsis tas yuav rov ua dua.
Puas tau tshwm sim lossis tshwm sim?
Qhov kev qhia "tshwm sim" tsis tuaj yeem siv qhov khoom ncaj qha, thiab yog li ntawd nws tsis muaj daim ntawv passive, yog li tsis muaj "yog/was/be tshwm sim" tense. Puas tau tshwm sim los yog tshwm sim? Ob daim ntawv yog grammatically raug (tsis sib xws rau kev hais lus ntawm qee cov lus Askiv purists).
Thaum qhov no yog qhov tshwm sim uas tshwm sim?
Lub hauv paus ntsiab lus ntawm kev mob Nrog qhov tshwm sim (uppada) ntawm qhov no, qhov tshwm sim. Thaum tsis muaj qhov no, qhov ntawd tsis tuaj. Nrog lub cessation (nirodha) ntawm no, uas ceases. - Samyutta Nikaya 12.61. Thaum qhov no yog qhov tshwm sim uas tshwm sim qhov tshwm sim uas tshwm sim thaum qhov no tsis yog qhov tsis yog qhov kev txiav txim siab tsis piav qhia?
Yuav ua li cas txiav txim siab seb qhov kev tshwm sim yog tshwm sim los yog tsis ua raws li txoj cai?
Kev sib xyaw ua lej ntawm kev hloov pauv enthalpy thiab hloov pauv hloov pauv tso cai rau kev hloov pauv ntawm lub zog dawb los suav. A tawm tsam nrog tus nqi tsis zoo rau ΔG tso tawm lub zog dawb thiab yog li nws tus kheej. Cov tshuaj tiv thaiv nrog qhov zoo ΔG yog tsis ua raws li kev xav thiab yuav tsis nyiam cov khoom.
Puas tsis muaj qhov tshwm sim tshwm sim xav tau enzymes?
Tam sim no, enzymes TSIS ua rau cov tshuaj tiv thaiv tsis yog tus kheej. Txawm li cas los xij, enzymes ua kom nrawm nrawm ntawm cov tshuaj tiv thaiv tus kheej. Yeej, lawv ua kom cov tshuaj tiv thaiv sai dua. Enzymes ua qhov no los ntawm kev txo qis kev ua kom lub zog ntawm cov tshuaj tiv thaiv.
