Iphysics
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Ive got a question in my biology a level book and i dont know the answer!! I would really appreciate it if someone could help me, thank you!! Here is the question:

A5. Suggest why using a glucose calibration curve to estimate the concentration of sugar in wine might give an underestimate.

It is in for tomorrow so i would be really grateful for any help
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bethygirl
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I don't know for certain but it could be because in wine there could be more types of sugars than just glucose so using a glucose calibration curve wouldn't take into account all the sugars in the wine so would give a lower estimate of the concentration than it actually is
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Kozmo
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I'd similarly say something along the lines of what bethygirl said, maybe:

Using a glucose calibration curve to estimate the concentration of sugar in wine may give an underestimate as it only supports a single form of sugar, glucose. This could cause the results to be inaccurate as it doesn't account for the other forms of sugar which may be present in wine, such as: sucrose (present in many fruits and therefore likely to be present in wine), fructose, lactose, maltose etc.

That's what I'd put. After all, it's open to interpretation as it's a 'suggest' question.

On another note, which exam board is this with?
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Iphysics
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Thank you so much for your replies!! It's with AQA
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bethygirl
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(Original post by Iphysics)
Thank you so much for your replies!! It's with AQA
expect a lot on carbs, I did AS this year and pretty much nothing came up on it
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Iphysics
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(Original post by bethygirl)
expect a lot on carbs, I did AS this year and pretty much nothing came up on it
Thank you
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