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Revision Pack

Revision Pack. BSB IGCSE Biology. SECTION F: Microorganisms and Genetic Engineering. Term 5/5 approx 7 lessons. Instructions. You can use the following statements for your revision. They are taken directly from the specification.

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Revision Pack

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  1. Revision Pack BSB IGCSE Biology

  2. SECTION F: Microorganisms and Genetic Engineering Term 5/5 approx 7 lessons

  3. Instructions • You can use the following statements for your revision. They are taken directly from the specification. • They key terms are also listed. Your revision should enable you to recognise and use these key terms in the test.

  4. Trigger Words • Trigger words at the start of the statements give you an idea of what it is that you might be asked to do in an exam question • You can compare these to the exam glossary that makes up the last two slides of this pack Important trigger words for IGCSE

  5. Food production Microorgansisms 5.5 understand the role of yeast in the production of beer 5.6 describe a simple experiment to investigate carbon dioxide production by yeast, in different conditions

  6. Food production Microorgansisms Yeast Beer Carbon dioxide

  7. Food production 5.7 understand the role of bacteria (Lactobacillus) in the production of yoghurt

  8. Food production Bacteria Lactobacillus Yoghurt

  9. Food Production 5.8 interpret and label a diagram of an industrial fermenter and explain the need to provide suitable conditions in the fermenter, including aseptic precautions, nutrients, optimum temperature and pH, oxygenation and agitation, for the growth of microorganisms Genetic modification (genetic engineering) 5.14 understand that large amounts of human insulin can be manufactured from genetically modified bacteria that are grown in a fermenter

  10. Food Production Industrial fermenter Aseptic precautions Nutrients Optimum temperature Optimum pH Oxygenation Agitation Genetic modification (genetic engineering) Human insulin Genetically modified bacteria

  11. Genetic modification (genetic engineering) 5.12 describe the use of restriction enzymes to cut DNA at specific sites and ligase enzymes to join pieces of DNA together 5.13 describe how plasmids and viruses can act as vectors, which take up pieces of DNA, then insert this recombinant DNA into other cells

  12. Genetic modification (genetic engineering) Restriction enzymes Specific sites Ligase enzymes Plasmids Viruses Vectors Recombinant DNA

  13. Genetic modification (genetic engineering) 5.15 evaluate the potential for using genetically modified plants to improve food production (illustrated by plants with improved resistance to pests) 5.16 recall that the term ‘transgenic’ means the transfer of genetic material from one species to a different species.

  14. Genetic modification (genetic engineering) Genetically modified plants Food production Pest resistance Transgenic

  15. Cloning 5.19 describe the stages in the production of cloned mammals involving the introduction of a diploid nucleus from a mature cell into an enucleated egg cell, illustrated by Dolly the sheep 5.20 evaluate the potential for using cloned transgenic animals, for example to produce commercial quantities of human antibodies or organs for transplantation.

  16. Cloning Cloned mammals Diploid nucleus Mature cell Enucleated egg cell Dolly the sheep Cloned transgenic animals Commercial quantities Human antibodies Organs for transplantation

  17. Cloning 5.17 describe the process of micropropagation (tissue culture) in which small pieces of plants (explants) are grown in vitro using nutrient media 5.18 understand how micropropagation can be used to produce commercial quantities of identical plants (clones) with desirable characteristics

  18. Cloning Micropropagation Tissue culture Explants In vitro Nutrient media Clones Commercial quantities Desirable characteristics

  19. Trigger Words Glossary

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