Paper 1 H - SAMPLE SET 1 Q2
2) A student investigates the rate of respiration in maggots.
Figure 3 shows the equipment he uses.
Figure 3 shows the equipment he uses.
2.1) Why does the student put the maggots on gauze? [1 mark]
2.2) When maggots respire they take in a gas from the air and release a different gas.
Solution A absorbs the gas released.
At the start of the investigation the student records the distance of the water droplet from the bend in the capillary tube.
Explain what happens to the water droplet as the maggots respire. [4 marks]
Table 1 shows the results the student calculated
2.2) When maggots respire they take in a gas from the air and release a different gas.
Solution A absorbs the gas released.
At the start of the investigation the student records the distance of the water droplet from the bend in the capillary tube.
Explain what happens to the water droplet as the maggots respire. [4 marks]
Table 1 shows the results the student calculated
2.3) The student uses his results to plot the graph in Figure 4.
Label the x and y axis. [1 mark]
Label the x and y axis. [1 mark]
2.4) How could the student find out if the result at 30 °C is anomalous? [1 mark]
2.5) Suggest what the value at 30 °C should be to fit the pattern of the graph. [1 mark]
(Total for Question 2 = 8 marks)
2.5) Suggest what the value at 30 °C should be to fit the pattern of the graph. [1 mark]
(Total for Question 2 = 8 marks)