I-Biomedical

Ukulawulwa Kokubonakaliswa Kwezakhi Zofuzo Ezintweni Eziphilayo Ukulawulwa kokubonakaliswa kwezakhi zofuzo inqubo yokulawula ukuthi izakhi zofuzo zivuliwe noma zivaliwe nini, kuphi, nokuthi zingakanani ezicutshini. Nakuba cishe wonke amaseli ezinto eziphilayo eziningi ane-DNA efanayo, uhlobo ngalunye lweseli lungaba nemisebenzi ehlukene—isibonelo, amaseli ezinzwa, amaseli emisipha, namaseli esibindi. Lokhu kwehluka kwenzeka ngoba… Funda kabanzi

Ikhodi Yezakhi Zofuzo Efa Lezimpawu Ufuzo lwezimpawu luyinqubo lapho izici zezinto eziphilayo zidluliselwa khona zisuka kubazali ziye enzalweni. Kungani ingane ingaba nombala wamehlo ofanayo nokayise, umbala wezinwele ofanayo nonina, noma ngisho nokuthambekela ezimweni ezithile zempilo? Impendulo ilele kukhodi yezakhi zofuzo, "ulimi" lwezinto eziphilayo olugcinwe ku-DNA olulawula indlela izinto eziphilayo... Funda kabanzi

Ukuhumusha Amaprotheni Ekwenziweni Kwamaseli Ukuhumusha amaprotheni kungenye yezinqubo eziyisisekelo empilweni yamaseli. Ngokuhumusha, ulwazi lwezakhi zofuzo olugcinwe kuchungechunge lwe-nucleotide lwe-mRNA (i-messenger RNA) luguqulwa lube uchungechunge lwe-amino acid olwakha amaprotheni. Amaprotheni ngokwawo adlala indima njengezingxenye zesakhiwo, ama-enzyme, abathuthi bama-molecule, ngisho nabalawuli bokubonakaliswa kwezakhi zofuzo. Ngaphandle kokuhumusha okunembile, amaseli… Funda kabanzi

Izindlela Zokubhala Ku-Molecular Biology Ukubhala kuyinqubo eyisisekelo ku-molecular biology exhumanisa ulwazi lwezakhi zofuzo ku-DNA nokukhiqizwa kwama-molecule e-RNA. Ngokubhala, ukulandelana kwe-nucleotide ku-DNA "kuhunyushwa" kube yi-RNA, engasebenza njenge-messenger RNA (mRNA) yokwenziwa kwamaprotheni, noma njengamanye ama-RNA asebenzayo njenge-rRNA ne-tRNA. Le nqubo... Funda kabanzi

Ukuphindaphindwa kwe-DNA Esahlukweni Samaseli Ukuphindaphindwa kwe-DNA inqubo yokukopisha izinto zofuzo ngaphakathi kweseli ngaphambi kokuba zihlukane. Le nqubo iyisisekelo sokusinda kwesidalwa, njengoba iqinisekisa ukuthi iseli ngalinye lendodakazi lithola ikhophi efanayo yolwazi lofuzo njengeseli lomzali. Ngaphandle kokuphindaphindwa kwe-DNA okunembile, ukuhlukaniswa kwamaseli—kungakhathaliseki ukuthi kungokokukhula, ukulungiswa kwezicubu, noma… Funda kabanzi

Ubudlelwano phakathi kwe-DNA ne-RNA ekubonisweni kwe-Gene Ukubonakaliswa kwe-Gene inqubo lapho ulwazi lwezakhi zofuzo olugcinwe emaseli lusetshenziswa khona ukukhiqiza imikhiqizo esebenzayo, ikakhulukazi amaprotheni, anquma isakhiwo kanye nomsebenzi wezinto eziphilayo. Kule nqubo, i-DNA ne-RNA zinobudlelwano obuseduze kakhulu nobuhambisanayo. I-DNA isebenza "njengengobo yomlando" ezinzile yolwazi lwezakhi zofuzo, ... Funda kabanzi

Isakhiwo se-RNA ohlelweni lwezakhi zofuzo I-Ribonucleic acid (RNA) iyi-molecule ebalulekile ohlelweni lwezakhi zofuzo lwazo zonke izinto eziphilayo. Nakuba i-DNA ivame ukubizwa ngokuthi "isitoreji" solwazi lwezakhi zofuzo, i-RNA idlala indima enamandla kakhulu: ikopisha, ithwale, ihumushe, futhi ihlele ngisho nolo lwazi ukuze luhunyushwe emisebenzini yezinto eziphilayo. Ukuhluka kwe-RNA akugcini nje ngendima yayo, kodwa futhi... Funda kabanzi

Ukwakheka kanye Nomsebenzi we-DNA Ezintweni Eziphilayo I-DNA (i-Deoxyribonucleic Acid) iyi-molecule eyinhloko egcina imiyalelo yezakhi zofuzo cishe kuzo zonke izinto eziphilayo. Kusukela kubhaktheriya olula kuya kubantu, i-DNA isebenza "njengencwadi yokuqondisa" elawula indlela amangqamuzana akhula ngayo, ahlukanisa ngayo, enza ngayo imisebenzi ye-metabolic, futhi adlulise izici kusuka kwesinye isizukulwane kuya kwesinye. Ukuqonda... Funda kabanzi

Umlando Wokuthuthukiswa Kwebhayoloji Yamamolekyuli Yanamuhla Ibhayoloji yamamolekyuli yanamuhla iyigatsha lesayensi elifunda izinqubo zokuphila ezingeni lamamolekyuli—ikakhulukazi i-DNA, i-RNA, namaprotheni, kanye nezindlela ezilawula ukuvezwa kwezakhi zofuzo kanye nofuzo. Lo mkhakha uyisisekelo sentuthuko eminingi kwesayensi nobuchwepheshe, kusukela ekuxilongweni kwezifo okusekelwe kuzakhi zofuzo kuya ekubunjweni kwezinto eziphilayo zokudla nemithi. Intuthuko yayo ayizange ibe khona… Funda kabanzi

Indima Yebhayoloji Yamamolekyuli Ekuthuthukisweni Kwesayensi Yokuphila Ibhayoloji yamamolekyuli iyigatsha lebhayoloji elifunda impilo ezingeni layo eliyisisekelo: amamolekyuli. Ukugxila kwayo okuyinhloko kusekwakhekeni, emsebenzini, kanye nokusebenzisana kwamamolekyuli abalulekile njenge-DNA, i-RNA, kanye namaprotheni, akha isisekelo sazo zonke izinqubo zokuphila. Kusukela yavela maphakathi nekhulu lama-20, i-biology yamamolekyuli ibilokhu iyisishukumisi esikhulu sentuthuko… Funda kabanzi