Ukudilika komhlaba: Usongo Emvelweni Nasekuphepheni Komphakathi Ukudilika komhlaba kuyisenzakalo semvelo esivame ukubangela izinhlekelele ezingxenyeni ezahlukene zomhlaba, okuhlanganisa ne-Indonesia. Lezi zenzakalo zihilela ukunyakaza kwenhlabathi, amatshe, noma ezinye izinto phansi kothango, okungabangela umonakalo wengqalasizinda kanye nokulahlekelwa yimpilo. Lesi sihloko sizoxoxa ngezimbangela, imiphumela, kanye… Funda kabanzi
Isibonelo Sombuzo Wengxoxo Yokuphindaphinda kwe-DNA Ukuphindaphinda kwe-DNA kuyinqubo eyisisekelo yezinto eziphilayo futhi kubalulekile ekusindeni kwezinto eziphilayo. Kule nqubo, ama-molecule e-DNA aziphindaphinda ukuze iseli ngalinye lendodakazi lithole ikhophi efanayo ye-DNA yeseli lomzali. Ukuqonda indlela yokuphindaphinda kwe-DNA kubalulekile kokubili kumongo we-biology yama-molecule kanye nasezisetshenzisweni ezisebenzayo njengocwaningo... Funda kabanzi
Isihloko: Ukuqhuma Kwezintaba-mlilo: Isenzakalo Semvelo Esimangalisayo Nesiyingozi Isingeniso Izintaba-mlilo zingenye yezimangaliso zemvelo ezithakazelisa kakhulu nezesabekayo. Ngamandla azo amakhulu, ukuqhuma kwezintaba-mlilo kungaba yinto ebhubhisayo futhi ezuzisayo empilweni eMhlabeni. Lesi sihloko sizoxoxa ngokuqhuma kwezintaba-mlilo, kusukela ekwakhekeni kwazo kuya emiphumeleni yazo emhlabeni.
Umthelela Wezinhlekelele Ekuphileni Izinhlekelele zemvelo ziyizinto ezingenakugwenywa ezenzeka ezingxenyeni ezahlukene zomhlaba. Lapho kwenzeka izinhlekelele zemvelo, ziletha izinguquko ezinkulu empilweni yabantu, emvelweni, nasemnothweni. Izinhlekelele zemvelo ezifana nokuzamazama komhlaba, izikhukhula, ukuqhuma kwezintaba-mlilo, kanye neziphepho konke kunemiphumela ebalulekile kokubili esikhathini esifushane neside. Isihloko … Funda kabanzi
Ingxoxo Yenkinga Yesampula Yemodeli Ye-DNA KaWatson noCrick Ngo-1953, uJames D. Watson noFrancis H.C. Crick bashukumisa umhlaba wesayensi ngokunyathelisa kwabo isakhiwo se-molecule ye-DNA. Lokhu kwembulwa kwesakhiwo se-double helix kwanikeza isisekelo sokuqonda izindlela zofuzo futhi kwavula indlela yentuthuko emangalisayo kwezakhi zofuzo zanamuhla. … Funda kabanzi
Isihloko: Imibuzo Eyisibonelo kanye Nengxoxo Yemithetho Yokubhangqa Isisekelo Isingeniso Kuzakhi zofuzo, imithetho yokubhangqa isisekelo iyisisekelo esibalulekile esichaza indlela imicu ye-DNA ne-RNA eyakhiwa futhi isebenza ngayo. Ku-DNA, izisekelo ze-nitrogenous zibhangqa ngqo: i-adenine (A) ibhangqa ne-thymine (T), kanti i-guanine (G) ibhangqa ne-cytosine (C). Ku-RNA, i-uracil (U) ithatha indawo ye-thymine. Le mithetho… Funda kabanzi
Izinhlekelele Zenhlalo: Ukuqonda Umthelela Wazo Nemizamo Yokunciphisa Izinhlekelele Isingeniso Izinhlekelele zenhlalo ziyizinto eziyinkimbinkimbi njengezinhlekelele zemvelo. Nakuba zingenalo isimo esibonakalayo njengokuzamazama komhlaba noma ama-tsunami, zingabangela umonakalo omkhulu emphakathini, ohlanganisa izici zezomnotho, zezombusazwe, kanye nezenhlalo namasiko. Njengohlobo lwenhlekelele yomphakathi, izinhlekelele zenhlalo… Funda kabanzi
Isihloko: Isibonelo Semibuzo Ingxoxo Ngokuhlanganisa Ama-Nucleotide Isingeniso Ama-Nucleotide ayizakhi eziyisisekelo zama-nucleic acid, okuyizisekelo zama-macromolecule abalulekile empilweni, njenge-DNA ne-RNA. Ama-Nucleotide adlala indima ebalulekile ekugcineni nasekudluliseni ulwazi lwezakhi zofuzo ezintweni eziphilayo. Ukuqonda isakhiwo kanye nomsebenzi wama-nucleotide nokuthi ahlanganiswa kanjani abe ama-polymer e-DNA noma e-RNA kuyisisekelo sebhayoloji… Funda kabanzi
Imibuzo Eyisibonelo Exoxa Nge-DNA Nezakhi Zofuzo Isingeniso Emkhakheni we-molecular biology, i-DNA (i-Deoxyribonucleic Acid) kanye nezakhi zofuzo kuyimibono eyisisekelo eyakha isisekelo sokuqonda ifa lezimpawu kanye nokusebenza kwezinto eziphilayo. I-DNA iyi-molecule egcina lonke ulwazi lwezakhi zofuzo oludingekayo ukulawula isakhiwo kanye nomsebenzi wento ephilayo. Ngakolunye uhlangothi, izakhi zofuzo ziyizingxenye ze-DNA ezikhomba... Funda kabanzi
Izinhlekelele Ezingezona Ezemvelo: Ukuqonda Izinsongo Nomthelela Wazo Ekuphileni Izinhlekelele ezingezona ezemvelo ziwuhlobo lwenhlekelele evame ukunganakwa kangako njengezinhlekelele zemvelo njengokuzamazama komhlaba, ama-tsunami, noma ukuqhuma kwezintaba-mlilo. Kodwa-ke, izinhlekelele ezingezona ezemvelo zinemiphumela emibi ngokulinganayo futhi zinamandla okuphazamisa impilo yabantu. Kulesi sihloko, sizofunda kabanzi… Funda kabanzi