Describe how the concentration of sugar in the liquid changes between 0 and 180 seconds - Edexcel - GCSE Biology - Question 2 - 2016 - Paper 1

From the data provided, the concentration of sugar in the liquid shows a clear trend over the time period of 0 to 180 seconds. Initially, at 0 seconds, the concentration is measured at 9 mg per cm³. As time progresses to 30 seconds, the concentration increases to 15 mg per cm³. This upward trend continues consistently at each subsequent 30-second interval:

• At 60 seconds, the concentration rises to 22 mg per cm³.
• By 90 seconds, it increases further to 28 mg per cm³.
• At 120 seconds, the concentration reaches 32 mg per cm³.

However, between 120 seconds and 180 seconds, the concentration levels off, remaining constant at 32 mg per cm³. Thus, overall, the concentration of sugar increases from 9 mg per cm³ to 32 mg per cm³ from 0 to 120 seconds before stabilizing.