The mitotic okirikiri e ji mara nke ugbu usoro

Division - otu ihe dị mkpa ihe onwunwe nke mkpụrụ ndụ. Enweghị usoro a, ọ gaghị ekwe omume iche na-abawanye na ọnụ ọgụgụ nke ndị dị iche iche Micro-ntule ma ọ bụ unicellular Nigeria. Ke adianade do, ya ana achi achi na mgbake nke anụ ahụ na ọbụna akụkụ nke multicellular ntule.

Ọ ga-kwuru na set nke usoro na-ewere ọnọdụ na mgbe n'etiti ìgwè abụọ, na-akpọ ndị cell okirikiri. Ọ na-ewe ebe nkebi. N'ihi ya, kwesịrị ekwesị e ji mara nke interphase na mitotic okirikiri nke cell abahade otuowo.

Iji nọgide na ihe kwesịrị ekwesị ego mkpụrụ ndụ ihe nketa na ihe onwunwe Agafee ibawanye DNA ụmụ irighiri. Ke adianade do, na interface na-aga na-biosynthesis nke na-edozi na guzobe mkpa cell owuwu.

M ga-asị na interphase ogologo karịa nkewa onwe ya. Ọ mejupụtara ndị na-esonụ:

• presynthetic oge - e ji arụsi ọrụ ike ibu Filiks, njikọ nke na-edozi na nucleic asịd, na kwa guzobere kpọmkwem activators sịntetik oge. The cell esịmde ya nkịtị size na-eweghachi dị mkpa maka ịrụ ọrụ nke organelle. Na oge nke oge a - a awa ole na ole ma ọ bụ ụbọchị.

• Sịntetik oge - ji DNA replication na njikọ nke histones, nke na-ahụ maka nucleosome nkwakọ nke ọhụrụ synthesized nucleic asịd, nakwa dị ka a ibawanye nke chromosomes na centrioles. Na oge nke oge a - ruo awa 12.

• postsynthetic oge - dịruru ruo mgbe mitosis, ji ìgwè nke ike na protein njikọ nke tubulin, nke dị oké mkpa maka cell nkewa. Dechara oge nke 2-4 awa.

Mgbe na-aga mitosis interphase nzọụkwụ, nke a na-ji ụfọdụ ndị nọchiri Filiks nke nwa mkpụrụ ndụ na-kpụrụ na a ọma kọwaa set of chromosomes.

Ọ bụ uru na-arịba ama na a ụbọchị ịnọgide na-amaghị ihe mere ndị nchupu nke fission usoro. Ọ bụ amaghị na usoro ndị na-akpali ya resumption, ọ bụ ezie na n'ịnyịnya homonụ nke site ihe nke mitotic okirikiri na-arụ ọrụ. The ihe ịchịkwa size of a bi na nke mkpụrụ ndụ, na-ghọtara.

Na mitotic cell okirikiri a na-enwe mmetụta glucocorticoids. Prolactin, thyrotropin, estrogens na androgens nwekwara ike nke na a ụfọdụ ụzọ imetụta nkewa nke mkpụrụ ndụ na lekwasịrị arọ.

Ọ bụ uru na-arịba ama ndị na-esonụ atụmatụ benign etuto ahụ - maka e ji mara ha circadian mitotic cell okirikiri (kwa ụbọchị). Ọ na-kweere na mgbe a akpụ progression emee a ọnụ ke uche nke organism ka r. N. chalones - mkpụrụ ndụ inhibitors.

On nkewa na size nke cell bi na-enwe mmetụta ọrụ nke lysosomal usoro, n'ihi na ya enzymes nwere ike imebi ihe mmetụta.

Ọ ga-kwuru na e guzobere ọhụrụ mkpụrụ ndụ bụ dabere na ụdị anụ ahụ, mmetụta nke mpụga ihe na n'ahụ ala nke ahu, nke mere na ụfọdụ o nwere ike nwere ụfọdụ ndị e ji mara, ji n'ihu uto nke cell bi ma ọ bụ nchupu nke usoro.