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Biology

GCSE · Edexcel

QuestionsFlashcards

Photosynthesis
Plant Structure
Transport in Plants
Plant Hormones
- Plant Hormones & Growth
  7
- Using Plant Hormones Commercially
  7

Transport in Animals
- The Need for Transport
  7
- Factors Affecting the Rate of Diffusion
  7
Respiration
- Respiration
  6
- Practical: Investigating Respiration
  5
Gas Exchange
Circulatory System
- The Blood & Blood Vessels
  6
- The Circulatory System
  8

Evaluating the Use of Genetic Engineering Flashcards

All 6 cards in this deck

Give two benefits of genetic engineering in medicine.: Large amounts of human proteins such as insulin can be made cheaply, and gene therapy may treat inherited disorders.
Give two ethical objections raised against genetic engineering.: It is seen as 'unnatural' or interfering with nature, and concerns that it could lead to choosing human characteristics ('designer babies').
Give one advantage of genetic engineering over selective breeding.: It is much faster and genes can be transferred between different species, giving characteristics the species could never have gained by breeding.
True or false? Insect pests can become resistant to the Bt toxin produced by GM crops.: True. Resistant individuals survive and reproduce, so the crop becomes less effective over time.
True or false? Genetically modified food has been proved to be harmful to human health.: False. There is no clear evidence of harm, but some people are concerned about long-term effects that are not yet known.
State one practical risk of using genetic engineering in agriculture.: Transferred genes may spread to wild plants or other crops by pollination, creating unwanted resistant weeds.