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2 Figure 2 shows part of a DNA molecule - Edexcel - GCSE Biology Combined Science - Question 2 - 2018 - Paper 1
Question 2
2 Figure 2 shows part of a DNA molecule. (a) (i) What is the shape of a DNA molecule? A single helix B double helix C complementary helix D triple helix (ii)... show full transcript
Worked Solution & Example Answer:2 Figure 2 shows part of a DNA molecule - Edexcel - GCSE Biology Combined Science - Question 2 - 2018 - Paper 1
Step 1
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Step 3
Describe how cells are broken down to release DNA.
Answer
To extract DNA from fruit, the first step is to homogenise the cells. This can be done by grinding, crushing, or squashing the fruit using a pestle and mortar.
After homogenisation, the next step is to mix the cells with a salt or detergent solution. The detergent helps to break down the cellular membranes, allowing the DNA to be released into the solution.
Step 4
State two benefits that the Human Genome Project could have for medicine.
Answer
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The Human Genome Project allows for the location of genes associated with diseases, facilitating better understanding and treatment options for genetic disorders.
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It provides opportunities for personalised medicine, where treatments can be tailored to individuals based on their genetic profiles.