(Higher tier) How does ethene influence cell division and fruit ripening in plants?
(Higher tier) How does ethene influence cell division and fruit ripening in plants?
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AQA GCSE Biology
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(Higher tier) What role do gibberellins play in seed germination?
(Higher tier) What role do gibberellins play in seed germination?
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What is the role of auxin in phototropism and gravitropism, and how does it affect plant growth rates?
What is the role of auxin in phototropism and gravitropism, and how does it affect plant growth rates?
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How do plant hormones coordinate growth and responses to environmental factors like light and gravity?
How do plant hormones coordinate growth and responses to environmental factors like light and gravity?
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What are some potential challenges and risks of fertility treatments, including IVF?
What are some potential challenges and risks of fertility treatments, including IVF?
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What social and ethical considerations are associated with IVF treatment?
What social and ethical considerations are associated with IVF treatment?
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How have advancements in microscopy contributed to the development of IVF treatments?
How have advancements in microscopy contributed to the development of IVF treatments?
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What is In Vitro Fertilisation (IVF), and what steps are involved in this procedure?
What is In Vitro Fertilisation (IVF), and what steps are involved in this procedure?
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How are hormones like FSH and LH used in fertility treatments, and how do they assist in helping a woman conceive naturally?
How are hormones like FSH and LH used in fertility treatments, and how do they assist in helping a woman conceive naturally?
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How does ADH regulate water levels in the body through kidney tubules, and what treatment options exist for individuals with kidney failure?
How does ADH regulate water levels in the body through kidney tubules, and what treatment options exist for individuals with kidney failure?
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Top Questions
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Discuss the advantages and disadvantages of genetically modifying crops, including soya, 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
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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
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Describe genetic modification as changing the genetic material of an organism by removing, changing or inserting individual genes
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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
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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
