Describe genetic modification as changing the genetic material of an organism by removing, changing or inserting individual genes
1 Answer Describe the use of: (a) enzymes in biological washing powders (b) pectinase for fruit juice production (c) lactase for lactose-free milk
1 Answer Describe how fermenters can be used for the large-scale production of useful products by bacteria and fungi, including the conditions that need to be controlled, limited to: temperature, pH, oxygen, nutrient supply and waste products
1 Answer Discuss why bacteria are useful in biotechnology and genetic modification, limited to: (a) no ethical concerns over their manipulation and growth (b) presence of plasmids
1 Answer Describe that bacteria are useful in biotechnology and genetic modification due to their rapid reproduction rate and their ability to make complex molecules
1 Answer Explain the role of yeast in the production of bread and ethanol
1 Answer Describe the role of artificial selection in the production of economically important plants and animals
1 Answer Describe artificial selection (selective breeding) with reference to: (a) selection by humans of animals or plants with desirable features (b) crossing these to produce the next generation (c) selection of offspring showing the desirable features (d) repetition over many generations
1 Answer Describe the development of strains of antibiotic-resistant bacteria, including MRSA, as an example of natural selection
1 Answer Describe how the inherited features of a population can evolve over time as a result of natural selection
1 Answer
Sourav Pan
Sourav Pan
Sourav Pan
Sourav Pan
Sourav Pan
Sourav Pan
Sourav Pan
BNO Team