Specimen QP - Paper 2 AQA Biology A-Level.
Figure 1 shows the apparatus used for measuring the rate of oxygen consumption in aerobic respiration by seeds. For the first 10 minutes, the tap attached to tube A was left open and the syringe from tube B was removed. Suggest three reasons why the apparatus was left for 10 minutes. [3 marks] 1 0 1 . 1 1 2 3 PMT 3 Turn over Suggest and explain why the chosen temperature was 20 °C for this experiment. [2 marks] Question 1 continues on the next page
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specimen qp paper 2 aqa biology a level