Genetic Modification (continued)
Gbogbo ọrọ náà
Genetic modification is not just for medicine. By inserting chosen genes into crop plants, scientists have made maize that fights off insects, soya that survives weedkillers, and rice that carries extra vitamin A to prevent childhood blindness. The promise is huge, but so is the controversy.
In this lesson you will outline the main uses of genetic modification, from human proteins in bacteria to herbicide-resistant, pest-resistant and more nutritious crops, and then (for [Supplement]) weigh the advantages and disadvantages of GM crops such as soya, maize and rice, reaching a balanced judgement of your own.
Ebumnobi
- Outline examples of genetic modification: (a) the insertion of human genes into bacteria to produce human proteins (b) the insertion of genes into crop plants to confer resistance to herbicides (c) the insertion of genes into crop plants to confer resistance to insect pests (d) the insertion of genes into crop plants to improve nutritional qualities
- [Supplement] Discuss the advantages and disadvantages of genetically modifying crops, including soya, maize and rice
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Genetic Modification (continued). Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Inserting a gene so a crop makes its own insect toxin gives the crop: A. herbicide resistance B. insect-pest resistance C. drought resistance D. extra vitamin A Answer: B
- Golden rice has been genetically modified to contain more: A. protein B. vitamin A C. iron D. sugar Answer: B
- A herbicide-resistant GM crop allows farmers to: A. spray weedkiller without harming the crop B. stop watering the crop C. avoid harvesting D. remove all insects Answer: A
- [Supplement] A major ecological concern about GM crops is that: A. they cannot reproduce B. modified genes could spread to wild plants C. they need no soil D. they grow too slowly Answer: B
- [Supplement] An advantage of GM over conventional cross-breeding is that: A. the whole genome is transferred B. only the wanted gene is transferred C. it is always cheaper D. no genes are changed Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
Biotechnology
Describe gel electrophoresis
"Biology: Biotechnology" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/17-1-biotechnology. Access for free at https://openstax.org/books/biology/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Genetic Modification (continued)? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
Budata Ngwa Ahụ Na Google Playstore
Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
