What does it mean when results show statistical significance?
What does it mean when results show statistical significance?
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IB Biology
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How is the chi-squared test used to determine associations between two species in quadrat sampling data?
How is the chi-squared test used to determine associations between two species in quadrat sampling data?
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How would you set up a sealed mesocosm to investigate ecosystem sustainability?
How would you set up a sealed mesocosm to investigate ecosystem sustainability?
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How can species be classified as autotrophs, consumers, detritivores, or saprotrophs based on their nutrition mode?
How can species be classified as autotrophs, consumers, detritivores, or saprotrophs based on their nutrition mode?
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Why do ecosystems have the potential to be sustainable over long periods?
Why do ecosystems have the potential to be sustainable over long periods?
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How is the supply of inorganic nutrients maintained in ecosystems?
How is the supply of inorganic nutrients maintained in ecosystems?
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How do autotrophs obtain inorganic nutrients, and what is the role of the abiotic environment?
How do autotrophs obtain inorganic nutrients, and what is the role of the abiotic environment?
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How does a community interact with the abiotic environment to form an ecosystem?
How does a community interact with the abiotic environment to form an ecosystem?
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What forms a community, and what interactions are involved?
What forms a community, and what interactions are involved?
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What are saprotrophs, and how do they obtain nutrients through external digestion?
What are saprotrophs, and how do they obtain nutrients through external digestion?
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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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