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https://examqa.com/wp-content/uploads/2022/03/AQA-AS-Biology-HIV-Paper-1-QP.pdf

For q3c) Why is the answer not 15000/20,=750x please? And why is it 187.5
Original post by anon25x
https://examqa.com/wp-content/uploads/2022/03/AQA-AS-Biology-HIV-Paper-1-QP.pdf

For q3c) Why is the answer not 15000/20,=750x please? And why is it 187.5


You need to use the scale bar and length of the image to find the actual diameter of the HIV particle in micrometers. Then divide that by 15

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