Ke nucleus o kanaka aeee: 'ole, ho'āʻo a me Kinohi

Na aeea nucleus - mea he pono 'ole o kela a me keia o na eukaryotic meaola. Kēia organelle hana i kekahiʻano o ka hana, akā, kona papa kuhikuhiE manao - o ka papaa a me ka EYI o hereditary aaiaoe mea.

ʻaneʻane kela aeea i loko o ke kanaka kino i ka Kora naʻEsau. Nā 'ia wale nō ka platelets a me ka ulaula koko keena. Ka hapa nui o ka mononuclear keena, akā, no ka laʻana, Muscle olona, a me neurons hiki i kekahi mau o kēia mau organelles. Ke nucleus i loko o ka halepaahao e i kaʻokoʻa nui - i ka nui nukelea 'ole i loko o ka wahine Kepakailiula.

Cell nucleus: 'ole

Ke Kernel i kekahiʻano eiiieaena 'ole, a he o ka nukelea wahī, chromatin, nucleolus a me ka nucleoplasm. E ka nānā i kēlā me kēia kuleana i loko o hou au mamuli.

• Karioteka ole nukeleaʻili lahilahi - ke 'ole e hoʻokaʻawale ai ke kipi' ia o ka nucleus mai ka cytoplasm. Ec keia iwi o ka mea ma waho a me loko membranes, ma waena a he mea ka pela-kapaia ka perinuclear a puni. Interestingly, ka mea ma wahoʻili lahilahi wahi ae 'ana i loko o kaʻili lahilahi o granular endoplasmic reticulum, no laila, ESR lua a me kāna mau' ōlelo poʻina nalu interconnected. A iwi he nukelea ili, e haapau nei i puka. Ka mea, i papahana no ka anal ka nui nā lātoma, e like me ia no ka wehe aʻe o ka waiwai ma waena o karyoplasm a me ka cytoplasm.
• Karyoplasm - homogeneous mea e hoopiha ana i ka pahale lua o ka nucleus. Ua loaʻa ka nucleolus a me ka chromatin.
• Chromatin - aeea ka aaiaoe mea. Kona mall pa alima mea he nucleosome a mea he DNA ili aku ai eha ma ka hana i ho'ākāka 'kumuʻiʻo - histone. Ma o ka halepaahao, ma laila nō nā Hawaii o aaiaoe mea. Heterochromatin he ia ho i ka meaʻuʻuku, anuanu granules osmophilic. Euchromatin a hemohemo chromatin - nā wahi i loko i kaʻeleu pele kemikala keʻano o ka hanaʻana. Ma ke kelepona hele mahele i ka chromatin condenses e lilo chromosomes.
• Nucleolus - liʻiliʻi ka'ololaha 'ole i ka he o ka makalii o ka RNA a me ka kumuʻiʻo nā lātoma. He 'aneʻi i ke kahua o ka ribosome subunits. Ke kāna mau 'ōlelo hiki ia he hookahi paha mau nucleoli, akā, ka mea hiki ke ike wale i loko o ka politika-ka mahele ana i keena.

Cell nucleus: Launch

I ka hana o ka halepaahao nucleus hiki ke nānā 'ia e heluhelu i ka' ole. Mua, ka Kernel mea kuleana no ka EYI o hereditary 'ike i loko o ke kelepona hele mahele, nā mitosis a me ka meiosis. Ma mitosis, ke kaikamahine keena hookipa i ka'ōewe, i mea'ālike i ka makua aeea. Ma meiosis (i ke kahua o ke keka keena o ke kanaka), kēlā halepaahao loaa wale hapalua o na chromosomes - he piha lākou o nā chromosomes ua hanaʻia ma hope o ka hoʻokuʻi pū me ka 'īnea i keena o nā meaola wale.

Eia hou, i ka nucleus o ka halepaahao mea kuleana no kekahi o na kahua o ka hoʻonaʻauaoʻano nui o ka pūnao - kumuʻiʻo hoʻololi kemikala. Ka mea i ka mea, ua hua mai i loko o ka 'ōlelo o ka' ike, a me ka elele RNA. A laila, ua hele aku i loko o ka endoplasmic reticulum, ua pili i ka ribosome a me ka lawelawe 'ana me ke kumu hoʻohālike no ke kahua o kaʻakika'amino lātoma o ka'aminoʻakika kaʻina.

A e like me ka mea i oleloia mai, ma o ka 'ōlelo o ka hoʻololi kemikala o ribosomal subunits.

Cell nucleus: ke me Kinohi

I ka lā, loaʻa nō kekahi mau loa okoa hypotheses, me ka i kānakaʻepekema e ho'āʻo ana e wehewehe ana i ka 'ōlelo i hana i loko o ka halepaahao. Akā, Eia naʻe, i kekahi o kēia mau mea i 'ōlelo i ole i loaʻa ka mea maoli e hooiaio ai.

Aia ka he pähola i ka nucleus like me ka ke kelepona hele 'ole i hanaʻia e like me ka hopena o ka symbiosis o ka mea koʻohune keena a me ka archaea. Otherʻepekema manaʻo i ka 'ōlelo - o ka hopena o ka maʻiʻaʻai o ka halepaahao-kekahi mea hoʻomaʻi.

Ka loa piha wehewehe he ka ai-kapaia ekzomembrannaya kuhiakau. E like me ia, i loko o ka papa o ka evolution i loko o ka halepaahao ua kekahi mawaho aeeaʻili lahilahi. Ma keia hihia, i ka wa kahiko, o ka pāʻili lahilahi ua lilo i kāna mau 'ōlelo iwi - ma manawa ia i ka luna' ano hana, a laila, i loko o kona lua, hoomaka ae la e noʻonoʻo chromatin lātoma.