2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ntawm thaj tsam ntawm plasma membrane. Cov lus qhia: Mesosome yog cov kab mob organelle uas ua raws li kev cuam tshuam ntawm cov ntshav plasma thiab ua haujlwm hauv txawm tias rov ua dua ntawm DNA thiab cell faib lossis tshem tawm ntawm exoenzymes.
Lub luag haujlwm ntawm mesosomes yog dab tsi?
Mesosomes pab hauv cell phab ntsa tsim. Lawv kuj pab hauv DNA replication thiab faib rau cov ntxhais cell. Lawv pab ua pa, tso pa tawm thiab ua rau thaj tsam ntawm cov ntshav plasma thiab cov ntsiab lus enzyme.
Mesosomes pab hauv kev zais cia li cas?
Mesosomes yog cov invaginations ntawm plasma membrane hauv cov kab mob. … Cov folded invaginations nce thaj tsam ntawm cov plasma membrane. Lawv kuj pab tsim cov phab ntsa ntawm tes. Lawv tso tawm ntau yam enzymes xws li dehydrogenase thiab ntau yam khoom ntawm electron thauj saw.
Qhov twg tsis yog kev ua haujlwm ntawm mesosomes?
➡Mesosome yog qhov txuas ntxiv ntawm cov cell membrane muaj nyob rau hauv cytoplasm raws li infolding thiab ua hauj lwm kom nce qhov chaw nyob rau hauv photosynthetic prokaryotes, cyanobacteria, nyob rau hauv nws nqa cov photosynthetic pigments. … Mesosomes ua tsis muaj cov enzymes rau nitrogen fixationuas ua rau kev xaiv D tsis raug.
Mesosome yog dab tsi thiab nws txoj haujlwm?
Mesosome yog cov qauv membranous convoluted tsim nyob rau hauv ib lub cell prokaryotic los ntawm invagination ntawm plasma membrane. Nws cov haujlwm yog liCov hauv qab no: (1) Cov txuas ntxiv pab hauv kev sib txuas ntawm phab ntsa ntawm tes thiab rov ua dua ntawm DNA. Lawv kuj pab sib npaug ntawm cov chromosomes rau hauv cov menyuam ntxhais.
Pom zoo:
Lub sijhawm twg nrog dna replication tshwm sim?
Thaum Mitosis, DNA tau rov ua dua thaum the S theem (Synthesis theem) ntawm Interphase. Interphase yog qhov pib lub neej txhua hnub ntawm lub xov tooj ntawm tes. Cells siv feem ntau ntawm lawv lub neej hauv Interphase ua ntej Mitosis tshwm sim (M theem).
Puas yog dna replication semiconservative?
Thaum kawg, xyoo 1958 Meselson thiab Stahl tau pom tias qhov rov ua dua ntawm DNA yog qhov tseeb semiconservativenrog txhua tus ntxhais chromosome suav nrog cov laus, niam txiv txoj hlua thiab ib qho tshiab, ntxiv strand (5). Puas yog DNA replication Semiconservative lossis kev saib xyuas?
Nyob rau hauv proofreading thaum dna replication?
Thaum lub sijhawm DNA rov ua dua (luam tawm), feem ntau DNA polymerases tuaj yeem "kuaj lawv cov haujlwm" nrog txhua lub hauv paus uas lawv ntxiv. Cov txheej txheem no hu ua proofreading. … Polymerase ntaus tias cov hauv paus yog mispaired.
Puas yog dna replication conservative lossis semiconservative?
DNA replication yog ib txheej txheem kev saib xyuas ib nrab, vim tias thaum tsim cov DNA molecule ob zaug tshiab: Ib txoj hlua yuav yog los ntawm cov qauv qauv qub. Puas yog DNA replication conservative Semiconservative los yog dispersive?
Puas dna replication tshwm sim hauv mitosis?
Nyob rau hauv lub voj voog eukaryotic cell, chromosome duplication tshwm sim thaum "S theem" (theem ntawm DNA synthesis) thiab chromosome segregation tshwm sim thaum "M theem" (theem mitosis). … YPuas DNA rov ua dua hauv mitosis?
