El okirikiri sel Ọ bụ usoro dị mgbagwoju anya na nke a na-achịkwa nke ukwuu nke na-enye ohere itolite na mmeputakwa nke mkpụrụ ndụ iji ghọta usoro a dị mgbagwoju anya nke ọma, ọ bara uru iji ngwá ọrụ a na-ahụ anya na-enyere anyị aka ịhazi ma na-anọchi anya usoro ihe omume na-eme n'oge cell . N'isiokwu a, anyị ga-enyocha maapụ echiche nke okirikiri cell na usoro ya, na-akọwapụta isi njirimara na ụkpụrụ ndị metụtara. N'iji usoro nka na nnọpụiche, ka anyị banye n'ime oge a na-adọrọ mmasị ma dị mkpa nke usoro ndụ cellular.
Okwu mmalite nke maapụ echiche nke okirikiri cell na usoro ya
Maapụ echiche nke okirikiri cell na sus fases Ọ bụ ihe ngosi eserese na-ahazi ma na-achịkọta ozi bụ isi metụtara usoro a dị mkpa n'ime sel. Nke a akụ na-ọtụtụ ebe na-eji mmụta na nkà mmụta sayensị nnyocha ịghọta na-echeta mgbagwoju nke ogbo nke okirikiri sel.
Usoro mkpụrụ ndụ Ọ bụ usoro nke mkpụrụ ndụ na-ekewa ma na-amụba, si otú a na-ahụ na uto na nrụzi nke anụ ahụ bụ akụkụ dị iche iche, nke ọ bụla nwere njirimara na ọrụ. Usoro ndị a gụnyere akụkụ G1, nke cell na-akwado maka mbịgharị nke mkpụrụ ndụ ihe nketa ya; usoro S, ebe njikọ DNA pụtara; usoro G2, bụ nke a na-enyocha mbipute DNA ziri ezi; na n'ikpeazụ, usoro M, nke mitosis ma ọ bụ meiosis pụtara, dabere n'ụdị cell.
Na a mapa conceptual N'ime okirikiri cell na usoro ya, mmekọrịta dị n'etiti ọkwa ndị a nwere ike ịnọchite anya n'ụzọ anya na nhazi. Iji ihe ndị dị ka akụ, ahịrị na ọnụ ọnụ, ị nwere ike igosi otu esi jikọọ usoro na otu ha si emetụta ibe ha. Na mgbakwunye, enwere ike ịgbakwunye nkọwa ndị bụ isi n'ụdị ederede, dị ka ihe omume akọwapụtara nke na-eme na ngalaba nke ọ bụla yana protein ndị metụtara. Ihe ngosi a na-ahụ anya na-eme ka nghọta na mmụta nke okirikiri cell, na-enye ngwá ọrụ bara uru maka ọmụmụ ihe na nyocha na usoro ihe ọmụmụ cell.
Mkpa nke map echiche dị ka ihe ọmụmụ
Map echiche bụ ngwá ọrụ dị mkpa na ngalaba ọmụmụ na mmụta dị mkpa ya dabere na ikike ya ịhazi ozi ahụ n'ụzọ a na-ahụ anya na ahaziri ahazi, na-enye ohere nghọta na nke miri emi nke echiche na mmekọrịta dị n'etiti ha.
Nke mbụ, maapụ echiche na-enye anyị ohere nke iji eserese na synthetically nọchite anya ihe ọmụma enwetara. Nke a na-eme ka njirimara nke isi na echiche nke abụọ dị mfe, yana nhụta nke ndị isi nke echiche. Site n'iji igbe ma ọ bụ ọnụ ọnụ na-anọchi anya echiche ọ bụla na ahịrị ma ọ bụ akụ iji jikọọ ha, a na-enweta ihe oyiyi doro anya na n'usoro nke na-enye ohere ịmekọrịta ozi na idowe nke ọma.
Ọzọkwa, map echiche "na-akwado njikọ" n'etiti isiokwu dị iche iche na echiche dị iche iche, na-emepụta netwọk nke ihe ọmụma jikọtara ọnụ. Njikọ a na-akpali echiche siri ike, ebe ọ bụ na enwere ike ịmepụta ihe kpatara na mmetụta, na-achọpụta usoro, na atụnyere echiche .
Nkebi nke okirikiri cell na nnọchite ha na maapụ echiche
Usoro okirikiri cell bụ usoro mgbagwoju anya nke gụnyere ọtụtụ usoro na-eme n'otu usoro. Usoro ndị a dị mkpa maka mmụgharị mkpụrụ ndụ na uto. Na maapụ echiche, enwere ike igosipụta ọkwa ndị a n'ụzọ doro anya na nkenke, na-enyere aka ịghọta nke ọma okirikiri cell na mmekọrịta dị n'etiti usoro dị iche iche.
A na-ekewa usoro nke okirikiri cell ụzọ abụọ bụ isi: akụkụ interphase na akụkụ nkewa cell. Usoro interphase nwere nkeji atọ: usoro G1, usoro S na G2. N'oge G1, cell na-eto ma na-akwado maka mmegharị DNA. Na-esote, na mpaghara S, DNA na-arụkọ ọrụ ma megharịa ya maka ịmepụta chromosomes nwanne nwanyị n'ikpeazụ, na usoro G2, cell na-akwado maka nkewa cell.
Usoro nkewa sel bụ isi nkebi abụọ: mitosis na cytokinesis. N'oge mitosis, cell nucleus na-ekewa ụzọ abụọ nuclei nwa nwanyị, nke na-ekesa otu n'ime sel ụmụ nwanyị. Na cytokinesis, cytoplasm na-ekewa ma na-emepụta mkpụrụ ndụ ụmụ nwanyị abụọ zuru oke. Usoro abụọ a dị mkpa iji hụ na nkesa nke mkpụrụ ndụ ihe nketa na ikewasị akụkụ cellular.
Usoro G1: Interphase na nkwadebe maka mmegharị DNA
Na nke a usoro okirikiri cell, nke a maara dị ka G1, cell nọ na ọnọdụ izu ike nke metabolic. N'ime oge a, cell na-arụ ọrụ dị iche iche dị mkpa iji kwadebe maka ntugharị DNA.
Ụfọdụ n'ime isi mmemme na-eme n'oge usoro G1 gụnyere:
- Ngwakọta ozi RNA (mRNA): Selụ na-emepụta mRNA site na mkpụrụ ndụ ihe nketa na-arụ ọrụ, nke dị mkpa maka njikọ protein.
- Ngwakọta protein: A na-ejikọta protein ndị dị mkpa maka uto na nkewa sel n'ime oge a.
- Uto cell: N'oge usoro G1, cell ahụ na-enwetakwa mmụba na nha ya na olu ya, na-akwadebe onwe ya maka ọkwa ọzọ nke okirikiri cell.
- Njikwa okirikiri cell: N'ime oge a, a na-eme nyocha siri ike nke iguzosi ike n'ezi ihe nke DNA na afọ ojuju nke ụfọdụ ihe a chọrọ iji gaa n'ihu na nzọụkwụ ọzọ nke usoro cell.
Na nchịkọta, usoro G1 nke okirikiri cell bụ oge nkwadebe dị mkpa maka ntugharị DNA. N'ime oge a, a na-eme usoro dị mkpa dị ka mRNA na njikọ protein, uto cell, na nyocha nke iguzosi ike n'ezi ihe DNA. Usoro ndị a dị mkpa iji hụ na cell dị njikere imepụtaghachi ihe mkpụrụ ndụ ihe nketa ya n'oge ikpeazụ nke okirikiri cell.
Usoro S: DNA replication na njikwa mma
Oge S nke okirikiri cell bụ usoro dị oke mkpa na ndụ cell, ebe ọ bụ n'oge a ka DNA na-eji nlezianya na-emegharị ya. Ntugharị DNA na-agba mbọ hụ na sel ọhụrụ ọ bụla na-apụta nwere nnomi zuru oke na otu nke ozi mkpụrụ ndụ ihe nketa dị na DNA mbụ ya.
Ntugharị DNA na-amalite n'ebe ụfọdụ a na-akpọ "mbilite n'ụdị nsụgharị," ebe DNA abụọ helix na-ekewa ma na-emepụta eriri ọhụrụ nkwado site na iji eriri mbụ ọ bụla dị ka template. Usoro a na-agụnye ọrụ nhazi nke ọtụtụ enzymes na protein, gụnyere DNA polymerase, nke na-agbakwụnye nucleotides nkwado na agbụ na-eto eto, na helicase, nke na-ewepụ ma kewaa eriri DNA.
Ozugbo DNA mezigharịrị, ọ dị mkpa iji hụ na enweghị njehie ma ọ bụ mmebi nke eriri ọhụrụ ahụ, iji hụ na iguzosi ike n'ezi ihe nke DNA, usoro njikwa mma mara dị ka "nyocha njehie" ma ọ bụ nyocha. N'oge usoro a, DNA polymerase na-enyocha nke ọma nucleotide ọ bụla etinyere, na-edozi njehie ọ bụla nwere ike ime. N'otu aka ahụ, enwere usoro nrụzi DNA nke nwere ike dozie mmerụ ahụ ma ọ bụ njehie dị njọ karị, dị ka mmụgharị.
Agba G2: Nkwadebe maka mitosis
N'oge G2 nke okirikiri cell, cell nọ na ọnọdụ nke nkwadebe nke ọma maka mitosis. N'ime oge a, usoro ihe omume dị oke egwu na-eme nke na-eme ka ihe ịga nke ọma nke nkewa sel. Usoro a na-esote ozugbo ma emechaa usoro S, nke DNA na-eme n'okpuru ebe a bụ usoro ndị bụ isi na-eme n'oge G2:
- Ngwakọta protein: N'ime oge G2, nnukwu njikọ protein dị mkpa maka nhazi nke chromosomes ziri ezi na nguzobe nke spindle mitotic na-apụta. Protein ndị a na-etinye aka n'ime ka microtubules guzosie ike, na-achịkwa okirikiri cell, na ịhazi igwe na-ebuga nkewa cell.
- Njikwa mmebi DNA: Ọrụ dị mkpa nke usoro G2 bụ nchọpụta na nrụzi DNA ọ bụla mebiri tupu cell ekewaa nke a na-arụzu site na usoro nrụzi DNA, nke gụnyere nrụzi njehie mmụgharị na nrụzi nke okpukpu abụọ. Ọ bụrụ na enweghị ike ịrụzi ya, a na-eme nzaghachi njide okirikiri cell iji gbochie mpụta nke mkpụrụ ndụ nwere mmebi mkpụrụ ndụ ihe nketa.
- Nnwale nke mbịgharị DNA: N'oge usoro G2, a na-eme nyocha nke ọma iji hụ na emezigharị DNA nke ọma na mpaghara S Ọ bụrụ na achọpụtara ihe na-adịghị mma, a na-akpalite mgbanaka sel iji gbochie mgbasa nke njehie n'oge mitosis.
Na nchịkọta, usoro G2 nke okirikiri cell bụ oge dị mkpa nke cell na-akwado maka nkewa site na njikọ protein, njikwa DNA, na nkwenye nke nsụgharị DNA, cell na-ekwe nkwa nkewa chromosome ziri ezi na nkewa nke ọma ịchịkwa usoro ndị a bụ ihe dị mkpa iji nọgide na-eguzosi ike n'ezi ihe nke mkpụrụ ndụ ihe nketa na nkwụsi ike, ma hụ na mmepe kwesịrị ekwesị nke anụ ahụ na ihe dị iche iche dị iche iche.
Oge M: Mitosis na nkewa sel
Oge M bụ ọkwa dị oke mkpa na cell okirikiri ebe nkewa cell na-ewere ọnọdụ. N'ime oge a, a na-emegharị ihe mkpụrụ ndụ ihe nketa dị n'ime oghere nke sel nne ma kewaa ya n'etiti sel ụmụ nwanyị. A na-ekewa usoro M n'ime nkeji anọ, nke ọ bụla nwere njirimara na ihe omume ndị na-eme ka nkewa dị mma nke chromosomes na nhazi nke mkpụrụ ndụ ọhụrụ.
Subphases nke Phase M bụ ndị a:
- Profase: N'oge a, chromosomes na-agbakọta ma na-ahụ anya n'okpuru microscope. Nucleus na-agbasa, na-ekwe ka ihe owuwu nke ngwa mitotic guzobe n'osisi abụọ nke cell. Na mgbakwunye, a na-emepụta spindle mitotic, ihe owuwu nke microtubules mejupụtara nke ga-enyere aka na nkewa nke chromosomes.
- Metafase: N'ime oge a, chromosomes na-adakọ na mbara ala equatorial nke cell, kpọmkwem n'etiti. Microtubules nke spindle mitotic na-ejikọta na chromosomes site na nhazi pụrụ iche a na-akpọ kinetochores, nke na-enye ohere nkesa chromosomes nke ọma n'oge ọzọ.
- Anafase: N'ebe a, nkewa nke chromosomes nwanne na-apụta, bụ nke a na-adọkpụrụ ya gaa n'osisi dị iche nke cell site na microtubules nke spindle mitotic. Nkewa a na-eme ka o doo anya na sel nwa nwanyị ọ bụla na-enweta nnomi zuru oke nke mkpụrụ ndụ ihe nketa.
Oge M na-ejedebe na telophase, ebe a na-emezigharị oghere n'ime sel nwa nwanyị ọ bụla na chromosomes decondense. Mgbe nke ahụ gasịrị, cytokinesis na-ewere ọnọdụ, nkewa nke cytoplasm nke na-ekewa sel ụmụ nwanyị abụọ kpamkpam, si otú a kwụsị usoro nkewa sel.
Mkpa nke iwu na okirikiri cell
Usoro nke okirikiri cell bụ usoro dị oke mkpa maka ịrụ ọrụ ziri ezi na mmepe nke ihe dị iche iche dị iche iche. Site na usoro njikwa na ebe nlele, mkpụrụ ndụ na-ahazi nkewa na uto ha, na-ahụ n'ezie ngbanwe nke mkpụrụ ndụ ihe nketa na nkewa ziri ezi nke chromosomes ndị a dị mkpa iji nọgide na-eguzosi ike n'ezi ihe nke genome ma gbochie ọdịdị ọrịa dịka cancer.
Otu n'ime isi ọrụ nke iwu na okirikiri cell bụ nchikota nke isi ihe omume, dị ka DNA oyiri na chromosome segregation n'oge cell nkewa. Site n'ịgbalite ma ọ bụ na-egbochi ụmụ irighiri ihe nchịkwa dị iche iche, mkpụrụ ndụ nwere ike hụ na ihe ndị a mere n'oge kwesịrị ekwesị na n'usoro kwesịrị ekwesị. N'ụzọ dị otú a, a na-ezere njehie ndị nwere ike ime ka e guzobe sel ụmụ nwanyị nwere nsogbu mkpụrụ ndụ ihe nketa.
Na mgbakwunye na ịhụ na ngbanwe ziri ezi na nkewa nke ihe mkpụrụ ndụ ihe nketa, ụkpụrụ na okirikiri cell na-enye ohere maka mkpụrụ ndụ ịzaghachi mgbaàmà gburugburu ebe obibi ma rụkwaa DNA mebiri emebi. Site na usoro nrịbama intracellular dị mgbagwoju anya, mkpụrụ ndụ nwere ike kwụsịtụ okirikiri sel ha nwa oge ma ọ bụrụ na enwere mmebi ma ọ bụ nrụgide, na-enye ohere ịrụzi ha ma ọ bụ, n'ọnọdụ dị oke njọ, na-akpalite. ọnwụ mkpụrụ ndụ Nzaghachi na ngbanwe a dị oke mkpa maka idowe homeostasis na ịrụ ọrụ ziri ezi nke anụ ahụ na akụkụ ahụ.
Ndị isi nchịkwa nke okirikiri cell na ọrụ ha
Usoro okirikiri cell bụ usoro a na-achịkwa nke ukwuu nke na-achịkwa uto na nkewa nke mkpụrụ ndụ. N'akụkụ a, anyị ga-enyocha isi ndị na-ahụ maka okirikiri cell ma tụlee ọrụ ha kpọmkwem.
Ebe njikwa okirikiri cell:
- Ebe nlele G1: Ebe nlele a na-enyocha ma ọnọdụ ọ dabara maka cell ịga n'ihu na nzọụkwụ ọzọ nke okirikiri cell. Ọ bụrụ na ọnọdụ adịghị mma, cell nwere ike ịbanye n'ọnọdụ ezumike nke a maara dị ka oge G0 ma ọ bụ nwee ike ịgbalite usoro iji mezie mmebi DNA.
- Ebe nlele G2: N'ebe a na-enyocha ya, a na-achọpụta na DNA emegharịghachila nke ọma na ọ dịghị ihe mebiri emebi na mkpụrụ ndụ ihe nketa. Ọ bụrụ na achọpụtara mmebi ọ bụla, usoro nrụzi na-arụ ọrụ ma cell nwere ike ịkwụsị ọganihu ya na okirikiri cell.
- Ebe nlele M: Ebe nlele a na-eme n'oge oge mitosis ma hụ na chromosomes ejikọtala nke ọma na equator nke cell tupu nkewa nwanne chromatid emee. Ọ bụrụ na achọpụtara anomalies, cell na-arụ ọrụ usoro iji mezie ihie ụzọ na hụ kpọmkwem nkewa nke mkpụrụ ndụ ihe nketa.
Ndị na-achịkwa okirikiri cell:
- Cyclin-based kinases (CDKs): Enzymes ndị a bụ isi na nhazi nke usoro cell, ebe ọ bụ na ha na cyclin na-ejikọta, protein ndị na-agbanwe n'ọtụtụ n'oge usoro dị iche iche nke okirikiri. Cyclin-activated CDKs phosphorylate kpọmkwem protein na-ekwe ka cell okirikiri ọganihu.
- Protein na-egbochi Tumor: Protein ndị a, dị ka p53, na-egbochi mmụba cell ma kwalite nrụzi DNA mebiri emebi. Ha na-arụ ọrụ dị ka ndị na-elekọta genome na nkwụsị ha ma ọ bụ mmụgharị ha nwere ike ibute mmepe nke ọrịa kansa.
- Cyclin D: Cyclin a na-arụ ọrụ dị oke mkpa na mmalite nke okirikiri cell, na-akwalite mgbanwe site na usoro G1 ruo oge S na-achịkwa ọrụ ya site na usoro mgbaàmà dị iche iche nke na-anabata ọnọdụ nke gburugburu ebe obibi.
Mgbanwe na okirikiri cell na ntinye aka ha na ọrịa
Mgbanwe na okirikiri sel, nke a makwaara dị ka dysfunctions na nhazi nke usoro nkewa sel, ka a mụọla ọtụtụ ebe n'ihi mmekọrịta chiri anya ha na mmepe na ọganihu nke ọtụtụ ọrịa. Ọdịiche ndị a nwere ike imetụta ọkwa dị iche iche nke okirikiri cell, dị ka oge G1, S, G2 ma ọ bụ M, ma nwee nnukwu nsonaazụ maka homeostasis nke organism.
Otu n'ime ọrịa ndị a na-ahụkarị na-emetụta mgbanwe na okirikiri cell bụ ọrịa kansa, ọrịa autoimmune na ọrịa neurodegenerative. N'ihe banyere ọrịa kansa, mkpụrụ ndụ kansa na-egosipụtakarị mmụba a na-achịkwaghị achịkwa n'ihi mmụgharị na mkpụrụ ndụ ihe nketa bụ isi maka ịhazi okirikiri cell. Mgbanwe ndị a nwere ike iduga n'ịkwalite mkpụrụ ndụ na-adịghị mma na n'ikpeazụ mmepe nke etuto ọjọọ.
Na mgbakwunye, mgbanwe n'ime okirikiri cell nwekwara ike imetụta mmeghachi omume mgbochi nke ahụ. Na ọrịa autoimmune, dịka ọmụmaatụ, a na-ahụta ọrụ na-adịghị mma na mkpochapụ nke mkpụrụ ndụ ndị na-adịghị mma site na apoptosis, nke na-eme ka nkwụsị nke mkpụrụ ndụ na-emeghachi onwe ya na ọgbọ nke nzaghachi mgbochi na-ebibi onwe ya. N'otu aka ahụ, na ọrịa neurodegenerative dị ka Alzheimer's ma ọ bụ Parkinson's, achọpụtala ihe akaebe nke mmebi nke usoro mkpụrụ ndụ n'ime ụbụrụ ụbụrụ, nke na-enye aka na-aga n'ihu na-emebi ọrụ nke neuronal na nchịkọta nke nchịkọta pathological.
Ngwa nke map echiche na nghọta nke okirikiri cell
Map echiche bụ ngwá ọrụ bara uru iji ghọta na chepụta echiche ndị metụtara ya. na okirikiri cell. Site n'iji eserese na-anọchi anya usoro dị iche iche nke okirikiri, protein na enzymes bụ isi gụnyere, yana mmekọrịta dị n'etiti ha, anyị nwere ike ijide n'ụzọ doro anya na nke ziri ezi karịa mgbagwoju anya nke usoro a dị mkpa.
Maapụ echiche ahụ na-enye ohere ka ịhazi ozi ahụ n'usoro n'usoro na ahaziri ahazi, nke na-eme ka amata ihe ndị bụ isi na mmekọrịta ha. Anyị nwere ike iji agba na ụdị dị iche iche iji gosipụta usoro dị iche iche nke okirikiri cell, ebe nyocha dị oke mkpa, na ụmụ irighiri ihe ndị metụtara ya. Tụkwasị na nke ahụ, njikọ na njikọ dị n'etiti ihe dị iche iche na-enye ihe ngosi anya nke mmekọrịta na ụkpụrụ ndị na-eme n'oge okirikiri cell.
Site n'iji ihu nkwuwa okwu na mgbọ, anyị nwere ike ime ka akụkụ dị mkpa nke okirikiri cell dị n'ime maapụ echiche. Anyị nwere ike ịgụnye ihe niile dị mkpa nke okirikiri cell, dị ka interphase, DNA replication, mitosis, na cytokinesis. Anyị nwekwara ike ime ka protein ndị na-achịkwa isi pụta ìhè, dị ka cyclins na cyclin-based kinases, bụ ndị na-ekere òkè dị mkpa na ọganihu okirikiri cell.
Na nchịkọta, maapụ echiche bụ ngwá ọrụ dị ike n'ịghọta okirikiri cell, ebe ọ na-enye anyị ohere iji anya nke uche hụ na hazie isi echiche na mmekọrịta n'ụzọ ahaziri ahazi ya ojiji nke agba, udi, obi ike na mgbọ na-enyere aka ime ka ihe dị mkpa na imepụta a ihe onyonyo pụtara ìhè. Site n'iji usoro a, anyị nwere ike imeziwanye nghọta anyị maka usoro cellular dị mgbagwoju anya ma kwado mmụta na mpaghara ọmụmụ ihe a.
Nkwanye maka mmepe na iji maapụ echiche n'ime ọmụmụ nke okirikiri cell na usoro ya
Iji bulie ịdị irè nke ọmụmụ nke okirikiri cell na usoro ya, ọ bụ ihe amamihe dị na ya iji map echiche dị ka ngwá ọrụ anya. Maapụ ndị a na-enyere aka ịhazi na jikọọ ozi metụtara ya, na-eme ka ọ dịkwuo mfe nghọta na idowe echiche ndị bụ isi. N'ebe a, anyị na-enye gị ndụmọdụ ụfọdụ imepụta wee jiri maapụ echiche nke ọma:
- Chọpụta ihe isi echiche: Tupu ịmalite ịmepụta maapụ ahụ, ọ dị mkpa ịchọpụta isi ihe metụtara okirikiri cell na usoro ya. Ndị a nwere ike ịgụnye interphase, mitosis, cytokinesis, na ndị ọzọ. Mepụta usoro echiche na echiche otu n'ụzọ ezi uche dị na ya.
- Jiri njikọ anya: Maapụ echiche dabere n'echiche bụ na a na-akwado mmụta site n'ịmepụta njikọ anya n'etiti echiche. Jiri akụ, ahịrị na agba iji gosipụta mmekọrịta na ndabere dị n'etiti usoro dị iche iche nke okirikiri cell. Nke a ga-enyere aka iji anya nke ọma na-eleba anya n'ụzọ nke ozi na ihe ndị bụ isi na-eme na ọkwa ọ bụla.
- Melite ma nyochaa maapụ echiche gị: Ka ị na-enwetakwu ihe ọmụma gbasara okirikiri cell na usoro ya, ọ dị mkpa imelite ma degharịa maapụ echiche gị, tinye ozi ọhụrụ wee mezie njikọ dị adị. Nke a ga-enyere gị aka ime ka nghọta gị sie ike ma chọpụta oghere nwere ike ịdị na ihe ọmụma gị.
Soro ndụmọdụ ndị a mgbe ị na-eke na iji maapụ echiche iji mụọ okirikiri cell na usoro ya, ma ị ga-ahụ ka esi akwado mmụta na njigide ozi gị. Daalụ n'ọmụmụ ihe gị!
Nchikota na maapụ echiche nke okirikiri cell na usoro ya.
N'ikpeazụ, maapụ echiche nke okirikiri cell na usoro ya enyela anyị ohere ịghọta n'ụzọ a haziri ahazi na nke a na-ahụ anya, usoro niile nke mejupụtara usoro a dị mkpa na ndụ cell. Site na maapụ a, anyị achọpụtala usoro dị iche iche nke okirikiri cell, dị ka interphase, G1 phase, S phase, G2 Phase na M, yana njirimara na ihe omume ha.
Site n'iji nlezianya na-enyocha maapụ echiche, anyị nwere ike ime ka mkpa nke S-phase, ebe DNA regharịa na-ewere ọnọdụ, na M Ph, ebe cell nkewa na-apụta. Usoro ndị a dị oke mkpa iji kwenye ihe nketa ziri ezi na nkesa mkpụrụ ndụ ihe nketa nye mkpụrụ ndụ ụmụ nwanyị. Ọzọkwa, anyị achọpụtala na a na-achịkwa usoro okirikiri nke cell nke ọma site na usoro njikwa mma nke na-eme ka iguzosi ike n'ezi ihe nke genome ma gbochie mmụba nke mkpụrụ ndụ na-achịkwaghị achịkwa.
Ọ dị mkpa iburu n'obi na map echiche a bụ ngwá ọrụ bara uru maka ụmụ akwụkwọ na ndị ọkachamara na ngalaba nke usoro ihe ọmụmụ cell, ebe ọ na-enye nkọwa nke usoro cell na usoro ya, na-enyere aka ịghọta ka mkpụrụ ndụ na-ekewa ma nọrọ na nguzozi. Site na nhazi usoro na njikọta nke echiche, maapụ echiche na-eme ka mmụta na njigide ozi metụtara isiokwu a dị mgbagwoju anya. N'ụzọ dị otú a, ọ na-aghọ onye nduzi bara uru iji mụọ usoro cell ma nyochaa akụkụ nke ọ bụla na akụkụ ya n'ime omimi.
Ajụjụ na Azịza
Ajụjụ 1: Gịnị bụ map echiche okirikiri cell na gịnị kpatara o ji dị mkpa?
Azịza: Map echiche okirikiri cell bụ ihe osise eserese nke usoro na usoro dị iche iche na-eme n'oge okirikiri ndụ nke cell. Ọ dị mkpa n'ihi na ọ na-enyere aka ịghọta n'ụzọ a na-ahụ anya na ahaziri ka sel si ekewa na imepụtaghachi.
Ajụjụ 2: Gịnị bụ akụkụ ndị bụ isi nke okirikiri cell nke nọchiri anya na maapụ echiche?
Azịza: Akụkụ ndị bụ isi nke okirikiri cell nke nọchiri anya na map echiche gụnyere usoro G1 (usoro uto), usoro S (njikọ DNA), usoro G2 (nkwadebe maka nkewa), na M (mitosis or meiosis).
Ajụjụ 3: Kedu ihe na-eme n'oge usoro G1 nke okirikiri cell?
Azịza: N'oge usoro G1, cell ahụ na-enweta oke uto na ọrụ metabolic. A na-ejikọta protein na organelles, ọ na-akwadokwa ịbanye na ngalaba S.
Ajụjụ 4: Gịnị na-eme n'oge S-adọ nke cell okirikiri?
Azịza: N'ime oge S, DNA nke sel cell na-emegharị. A na-emepụta otu mkpụrụ ndụ ihe nketa kpọmkwem ma sụgharịa chromosomes. Ọ bụ nzọụkwụ dị oke mkpa iji hụ na mkpụrụ ndụ nwa nwanyị nwere mmeju mkpụrụ ndụ ihe nketa zuru oke ma na-arụ ọrụ.
Ajụjụ 5: Gịnị na-eme n'oge G2 usoro nke cell okirikiri?
Azịza: N'oge usoro G2, cell na-aga n'ihu na-eto eto ma na-akwado maka nkewa cell. A na-emepụta protein ndị dị mkpa maka mitosis ma nyochaa DNA nke emegharịgharịrị maka njehie ma ọ bụ mmebi.
Ajụjụ nke isii: Gịnị bụ ebumnobi nke usoro M nke okirikiri cell?
Azịza: Ebumnuche nke oge M bụ nkewa cell. N'ime oge a, cell na-ekewa n'ime sel ụmụ nwanyị abụọ yiri nke ahụ site na mitosis ma ọ bụ, n'ihe gbasara sel mmekọahụ, site na meiosis.
Ajụjụ nke asaa: Kedu otu esi egosipụta akụkụ nke ọ bụla nke okirikiri cell na maapụ echiche?
Azịza: A na-anọchi anya akụkụ nke ọ bụla nke okirikiri cell na maapụ echiche site na iji ihe eserese yana njikọ doro anya.
Ajụjụ 8: Gịnị bụ uru dị n'iji map echiche ghọta okirikiri cell?
Azịza: Site n'iji map echiche, ị nwere ike nweta echiche doro anya na ahaziri ahazi nke usoro dị iche iche nke okirikiri cell yana otu esi ejikọta ha. Nke a na-akwalite nghọta nke usoro ma na-enyere aka idowe ozi nke ọma karị.
Ajụjụ 9: Ebee ka ejiri maapụ echiche okirikiri cell?
Azịza: A na-eji maapụ echiche nke okirikiri cell na mpaghara ọmụmụ sayensị, dị ka ihe ọmụmụ mkpụrụ ndụ na mkpụrụ ndụ ihe nketa. Ọ nwekwara ike ịbụ ngwá ọrụ bara uru maka ụmụ akwụkwọ na ndị ọkachamara bụ ndị chọrọ ịghọta na ịkparịta ụka nke ọma' usoro cell.
Ajụjụ 10: Enwere ụdị dị iche iche nke maapụ echiche nke okirikiri cell?
Azịza: Ee, enwere ụdị dị iche iche nke maapụ echiche nke okirikiri sel nke nwere ike ịgụnye nkọwa ndị ọzọ ma ọ bụ ụzọ a kapịrị ọnụ dabere na ebumnuche ma ọ bụ ọnọdụ eji. Ụfọdụ ụdị dị iche iche nwere ike ilekwasị anya n'akụkụ ụfọdụ nke okirikiri, dị ka nrụzi DNA ma ọ bụ njikwa okirikiri cell.
Na ngwụcha
N'ikpeazụ, iji map echiche nke okirikiri cell na usoro ya bara uru iji ghọta na iji anya nke uche hụ usoro mgbagwoju anya nke nkewa sel. Akụrụngwa teknụzụ a enyela anyị ohere inyocha n'ụzọ zuru ezu usoro dị iche iche na-eme okirikiri cell, site na usoro G1 ruo na nkewa ikpeazụ na mitosis na cytokinesis.
Site n'iji usoro nnọpụiche na ebumnobi mee ihe, maapụ echiche a na-enye anyị ọhụụ doro anya na nkenke nke ka usoro nke ọ bụla si metụta ma dabere na ndị ọzọ, na-enye ohere nghọta ka mma maka usoro biochemical na molecular metụtara.
Na mgbakwunye, akụrụngwa teknụzụ a na-enyere anyị aka ịchọpụta isi ihe dị oke egwu nke okirikiri sel, dị ka ihe mgbochi na ebe nlele, ebe a na-enyocha iguzosi ike n'ezi ihe nke DNA na ọnọdụ ndị ga-aga n'ihu na ọkwa ọzọ. N'otu aka ahụ, ọ na-enye anyị ohere ịghọta mkpa nke protein na-achịkwa na akara ekwentị na-achịkwa ọganihu nke okirikiri cell.
Na nchịkọta, maapụ echiche nke okirikiri cell na usoro ya bụ ngwa ọrụ dị mkpa maka ụmụ akwụkwọ, ndị nchọpụta na ndị ọkachamara nke usoro ihe ọmụmụ cell. Ụzọ nka nka na nnọpụiche ya na-enye anyị ntụzịaka anya na ahaziri ahazi iji miba n'ime usoro a na-adọrọ mmasị ma ghọta mgbagwoju anya ya. Site na ngwá ọrụ a, anyị na-abịaru nso iji kpughee ihe omimi nke nkewa cell na ọrụ ya dị mkpa na ndụ na mmepe nke ihe ndị dị ndụ.
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