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5.2 - SPECIMEN SET B2 Q9

9) People with Type 1 diabetes cannot control the concentration of glucose in their blood.
This is because they do not produce the hormone insulin.
The same concentration and volume of glucose solution is given to two people.
  • Person with Type 1 diabetes.
  • Person without Type 1 diabetes.
​Figure 6 shows how the blood glucose concentration of these people changes after they each drink a glucose solution. 
9.1) The blood glucose concentration increases at a faster rate in the person with diabetes compared to the person without diabetes.
Calculate how much faster the rate of increase in blood glucose concentration is in the person with diabetes.
Give the rate of increase for the first 30 minutes after drinking the glucose solution.
​Give your answer in units / h. [2 marks]
​
__________________ ​Units / h

9.2) The blood glucose concentration of the person without diabetes starts to change 30 minutes after drinking the glucose solution.
Explain why the blood glucose concentration changes. [2 marks]

People with diabetes should try to keep their blood glucose concentration within the same range as a person without diabetes.
Most people with Type 1 diabetes regularly check their blood glucose concentration using a meter, as shown in Figure 7.
​The meter reading is used to estimate how much insulin they need to inject.
Figure 8 shows a new system. It is connected to the person all the time
The new system:
  • gives better control of blood glucose concentration
  • reduces the number of times the glucose concentration falls too low.
9.3) Evaluate the two systems as methods for controlling blood glucose concentrations for people with Type 1 diabetes. Give a justified conclusion to your evaluation. [4 marks]

9.4) How does the body respond if slightly too much insulin is injected into the body. [5 marks]

​​(Total for Question 9 = 13 marks)