Mahi a te pūtau i roto i te pokapū pūtau

Ko te pūtau o kaiao ora katoa i te hanganga rite. ngā katoa o ratou o te membrane wē, te anga a tawhio reira (glycocalyx i roto i nga kararehe pakitara pūtau ranei: i roto i te harore - i chitin, ngā tipu - cellulose), cytoplasm (organelles i roto i nei e kei, ia o nei mahi ona mahi, pokapū pūtau, hei tauira whai wāhi i roto i te wehenga) me te karihi, e tiaki DNA (anake hoki prokaryotes).

organelles pūtau

Ēnei ngā ribosomes, lysosomes, pungaraungao, Golgi taputapu, kiriuwhi me te pokapū pūtau. I roto i te tipu pūtau i roto hoki organelles motuhake e te hunga ahurei ki a ratou - te miru. whakaemi ratou matū e hiahiatia plastids (chromoplasts, leucoplasts, chloroplasts, i puta te whakamutunga tukanga photosynthetic). Ko te mahi o te pokapū pūtau, he tino nui pungaraungao, ribosomes, me ētahi atu hanganga. Pungaraungao tākaro te tūranga o teihana mana whakatupuranga ahurei, i reira he he tukanga i roto i nei tukupūngao intracellular. He kawenga mō te hanga o te pūmua i te synthesizing ratou i te waikawa amino takitahi i roto i te aroaro o te mRNA, i tuhia ngā mōhiohio i runga i matū hiahiatia pūtau Ribosomes. mahi Lysosomal kei roto i te wāhinga o ngā pūhui matū mā te whakamahi i whākōkī, e kua roto i roto i te organelle. kohikohi Golgi taputapu me mau etahi matū. he wāhi i roto i te pākia e hoki kiriuwhi.

Pūkoro Center - hanganga me te mahi

huaina ana tēnei organelle ko te centrosome. He uaua nga mahi o te pokapū pūtau ki pe si◊aki - kahore e kia taea ki tenei organelle wehewehenga pūtau. Kei a ia ko e rua nga wahi. I roto i tenei pokapū pūtau he rite ki te ribosome, te hanganga o nei hoki ngā rua haurua. Wāhanga centrosome huaina centrioles, rite te rango tuwhera i hanga o microtubules titiro ia o ratou. E whakaritea ratou hāngai ki tetahi ki tetahi. Ko te mahi o te pokapū pūtau i roto i te hanganga muka centrioles i roto i te whāū pūira ranei.

Ka rite ki nga Wehea pūtau?

E rua ngā huarahi matua - whāiti pūira me te whāū pūira. E whakakitea mahi pokapū pūtau i roto i te tukanga e rua. A i roto i nga wā tuatahi, me te tuarua, e te wehenga wahi i roto i te maha o ngā wāhanga. Tohatoha i te wāhanga e whai ake nei: prophase, metaphase, anaphase, telophase. te tikanga whai wāhi whāiti pūira e rua wehenga pūtau karapīpiti, ka karanga te wa i waenganui i a ratou te interphase. Nō reira, i hanga te tukanga o ngā pūtau ki ngā pūira diploid (rua) te tahi maha haploid (kotahi). E kore te te maha o ngā pūira i roto i whāū iti - riro hoki pūtau tamahine he diploid. He he ano hoki te tikanga mo te wehewehe rite amitosis. I roto i tenei take, te matua, a ka te cytoplasm katoa tika wahia i roto i rua. e kore te mea rite noa rite te rua tuatahi tenei momo, puta reira te nuinga i roto i te māmā. e kore he wāhi pokapū Cell i roto i tenei tukanga.

Whai wāhi i roto i te wehenga o te pokapū pūtau

tikanga Prophase faaineine mo te tukanga o te whāū pūira ranei, te membrane karihi whatiia iho tona roa. I roto i metaphase te momotu pokapū pūtau ki e rua centrioles motuhake. Ratou, i roto i te tahuri, titaria ki amo ritenga o te pūtau. I tenei wā, raina nga pūira ake me te kōpae waenganui. Na ka whiria e ratou muka piri ki nga centrioles kia i piri chromatids rerekē o ia pūira ki centrioles ritenga. Puta noa, motumotuhia ia pūira metaphase ki chromatids motuhake e centrioles te aho ki te amo ritenga kukume. I roto i i hanga te telophase anga karihi te, tuwhaina e te cytoplasm me te mutunga i hanga pūtau tamahine.