Human Biology - 4HB1 PearsonEdexcel

Genetic Engineering And Cell Division

Gbogbo ọrọ náà

Every person with type 1 diabetes who injects insulin today relies on bacteria that have been given a human gene. Genetic engineering lets scientists move a single useful gene between completely different species, turning bacteria into miniature insulin factories and plants into sources of vaccine proteins.

In this lesson you will learn how a gene is cut out, inserted into a vector and used to reprogramme an organism, follow the four stages of mitosis that let a single fertilised egg become a fully grown human body, and weigh up the promise and the ethical difficulties of using stem cells in medicine.

Ebumnobi

  1. Outline principles of genetic engineering, including the production of genetically modified bacteria to produce human insulin, and the production of genetically modified plants to produce vaccines and to improve health
  2. Understand that mitosis occurs during growth, repair, cloning and asexual reproduction
  3. Know the four main stages of mitosis: prophase, metaphase, anaphase and telophase, which results in the production of two genetically identical diploid daughter cells
  4. Know that there are different types of stem cells, including embryonic and adult stem cells that have the ability to develop into other body cells
  5. Describe the advantages, disadvantages and ethics in the research and use of embryonic and adult stem cells

Akọmọ Ojú-ẹkọ

Because the genetic code is universal, a gene taken from a human cell can be read correctly by a bacterium, and a fertilised human egg can use mitosis to build every tissue in the body from one single starting cell. This lesson looks at two ways human biology makes use of that shared code: deliberately moving genes between organisms in genetic engineering, and the highly controlled process of cell division that builds and repairs the body.

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

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Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Genetic Engineering And Cell Division. 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.

  1. Which enzyme joins the cut ends of a gene and a plasmid together? A) Restriction enzyme B) DNA polymerase C) DNA ligase D) RNA polymerase Answer: C
  2. What is a plasmid? A) A type of white blood cell B) A small circular loop of bacterial DNA used as a vector C) A stage of mitosis D) An enzyme that cuts DNA Answer: B
  3. Which stage of mitosis is identified by chromosomes lined up along the centre of the cell? A) Prophase B) Metaphase C) Anaphase D) Telophase Answer: B
  4. Mitosis produces daughter cells that are: A) Haploid and genetically different B) Diploid and genetically identical C) Diploid and genetically different D) Haploid and genetically identical Answer: B
  5. Which type of stem cell can differentiate into almost any cell type in the body? A) Adult stem cell B) Embryonic stem cell C) Skin cell D) Red blood cell Answer: B

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Ọ dị na ngwa Green Bridge

Budata ngwa Green Bridge CBT na ekwentị maọbụ kọmputa gị iji nweta akwụkwọ ndụmọdụ zuru oke, ajụjụ mmụta, na ndị ọzọ.

Akwụkwọ ndụmọdụ zuru oke nwere eserese
Onye inyeaka mmụta AI
Mụọ n'ụzọ na-enweghị ịntaneti, oge ọbụla, ebe ọbụla
Ọ dị na Android, Windows, macOS, na Linux

Meecha Ajụjụ Ule Ọmarịcha

Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Genetic Engineering And Cell Division? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.

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