Archives: Questions and Answers

Discuss the advantages and disadvantages of genetically modifying crops, including soya, maize and rice

Outline the process of genetic modification using bacterial production of a human protein as an example, limited to: (a) isolation of the DNA making up a human gene using restriction enzymes, forming sticky ends (b) cutting of bacterial plasmid DNA with the same restriction enzymes, forming complementary sticky ends (c) insertion of human DNA into … Read more

Outline examples of genetic modification: (a) the insertion of human genes into bacteria to produce human proteins (b) the insertion of genes into crop plants to confer resistance to herbicides (c) the insertion of genes into crop plants to confer resistance to insect pests (d) the insertion of genes into crop plants to improve nutritional … Read more

Describe genetic modification as changing the genetic material of an organism by removing, changing or inserting individual genes

Describe and explain the conditions that need to be controlled in a fermenter, including: temperature, pH, oxygen, nutrient supply and waste products

Describe how fermenters can be used for the large-scale production of useful products by bacteria and fungi, including insulin, penicillin and mycoprotein

Explain the use of lactase to produce lactosefree milk

Investigate and describe the use of biological washing powders that contain enzymes

Describe the use of pectinase in fruit juice production

Describe the role of anaerobic respiration in yeast during bread-making