Biology - 4BI1 PearsonEdexcel

Genetic Modification (genetic Engineering)

Akopọ

What if you could take a single gene from one organism and place it inside another to give it entirely new capabilities? That is exactly what genetic modification makes possible. Scientists now routinely insert human genes into bacteria to manufacture life-saving medicines, and engineer crop plants to resist pests or survive drought.

This topic walks you through the tools of genetic engineering: restriction enzymes that cut DNA at precise locations, ligase that joins fragments together, plasmids and viruses that carry genes into new cells, and the fermenter technology that scales production to industrial levels. You will also explore the benefits and concerns surrounding genetically modified crops and the meaning of the term transgenic.

Awọn Afojusun

  1. Understand how restriction enzymes are used to cut DNA at specific sites and ligase enzymes are used to join pieces of DNA together
  2. Understand how plasmids and viruses can act as vectors, which take up pieces of DNA, and then insert this recombinant DNA into other cells
  3. Understand how large amounts of human insulin can be manufactured from genetically modified bacteria that are grown in a fermenter
  4. Understand how genetically modified plants can be used to improve food production
  5. Understand that the term transgenic means the transfer of genetic material from one species to a different species

Akọ̀wé Ẹ̀kọ́

In 1982, genetically engineered bacteria produced the first synthetic human insulin, replacing insulin extracted from pig and cow pancreases. Today, nearly all insulin used by diabetics worldwide comes from modified bacteria grown in industrial fermenters. The technique that made this possible - cutting a gene from one species and splicing it into another - is the foundation of modern genetic engineering.

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Ìdánwò Ẹ̀kọ́

Oriire fun ipari ẹkọ lori Genetic Modification (genetic Engineering). Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.

Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.

Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.

  1. What is the function of restriction enzymes in genetic engineering? A) They join pieces of DNA together B) They cut DNA at specific base sequences C) They carry genes into host cells D) They copy DNA during cell division Answer: B
  2. Which structure acts as a vector in bacterial genetic engineering? A) Ribosome B) Chromosome C) Plasmid D) Mitochondrion Answer: C
  3. What enzyme joins the gene into the plasmid? A) Restriction enzyme B) DNA polymerase C) DNA ligase D) Amylase Answer: C
  4. Why are genetically modified bacteria grown in a fermenter? A) To prevent them from escaping B) To provide controlled conditions for rapid reproduction C) To expose them to sunlight D) To remove unwanted genes Answer: B
  5. What does the term transgenic mean? A) An organism with extra chromosomes B) An organism containing genes from a different species C) An organism that has been cloned D) An organism produced by selective breeding Answer: B

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Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
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O wa lori ohun elo Green Bridge

Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.

Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
Oluranlọwọ ẹkọ ti AI ṣe agbara rẹ
Kọ ẹkọ laisi intanẹẹti, nigbakugba, nibikibi
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Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Genetic Modification (genetic Engineering)? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.

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