How can the spread of pathogens be reduced by immunizing a large proportion of the population?
How can the spread of pathogens be reduced by immunizing a large proportion of the population?
1 Answer
Questions and Answers For
AQA GCSE Biology
237 Questions
How does vaccination help prevent illness in an individual?
How does vaccination help prevent illness in an individual?
1 Answer
Even with modern synthesis, how might a chemical extracted from a plant be used in developing new drugs?
Even with modern synthesis, how might a chemical extracted from a plant be used in developing new drugs?
1 Answer
How are most new drugs synthesised in the pharmaceutical industry?
How are most new drugs synthesised in the pharmaceutical industry?
1 Answer
How was penicillin discovered, and who discovered it?
How was penicillin discovered, and who discovered it?
1 Answer
From which plant does the painkiller aspirin originate?
From which plant does the painkiller aspirin originate?
1 Answer
Where does the heart drug digitalis originate from?
Where does the heart drug digitalis originate from?
1 Answer
How were drugs traditionally extracted from plants and microorganisms?
How were drugs traditionally extracted from plants and microorganisms?
1 Answer
What is the role of preclinical and clinical testing in drug development?
What is the role of preclinical and clinical testing in drug development?
1 Answer
What is the process of discovery and development of potential new medicines?
What is the process of discovery and development of potential new medicines?
1 Answer
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Top Questions
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Discuss the advantages and disadvantages of genetically modifying crops, including soya, maize and rice
Genetically modified (GM) crops, such as soybeans, maize, and rice,
Sourav
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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 bacterial plasmid DNA using DNA ligase to form a recombinant plasmid (d) insertion of recombinant plasmids into bacteria (specific details are not required) (e) multiplication of bacteria containing recombinant plasmids (f) expression in bacteria of the human gene to make the human protein
<h2 class="mb-2 mt-6 text-lg first:mt-3">Process of Genetic Modification Using Bacterial
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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 qualities
<h2 class="mb-2 mt-6 text-lg first:mt-3">Examples of Genetic Modification</h2> Genetic modification involves
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Describe genetic modification as changing the genetic material of an organism by removing, changing or inserting individual genes
Genetic modification (GM) refers to the deliberate alteration of an
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Describe and explain the conditions that need to be controlled in a fermenter, including: temperature, pH, oxygen, nutrient supply and waste products
<h2 class="mb-2 mt-6 text-lg first:mt-3">Conditions to Control in a Fermenter</h2> Fermenters
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Describe how fermenters can be used for the large-scale production of useful products by bacteria and fungi, including insulin, penicillin and mycoprotein
<h2 class="mb-2 mt-6 text-lg first:mt-3">The Use of Fermenters for Large-Scale
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Explain the use of lactase to produce lactosefree milk
<h2 class="mb-2 mt-6 text-lg first:mt-3">The Use of Lactase to Produce
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