B2 H - Sample set 1 Q7 Answers
7) A diabetic athlete is advised to estimate the number of grams of carbohydrate in his
meals in order to calculate the number of units of insulin he will need to inject to
lower his blood glucose concentration.
Each unit of insulin he injects reduces his blood glucose concentration by 1.5 moldm–3.
He needs to inject 1 unit for every 10 grams of carbohydrate he consumes.
Figure 12 shows the estimated carbohydrates in the breakfast eaten by the athlete.
Each unit of insulin he injects reduces his blood glucose concentration by 1.5 moldm–3.
He needs to inject 1 unit for every 10 grams of carbohydrate he consumes.
Figure 12 shows the estimated carbohydrates in the breakfast eaten by the athlete.
(a) (i) Calculate how many units of insulin the athlete would need to inject to
control the rise in blood glucose levels.
Give your answer to two significant figures. (2)
Give your answer to two significant figures. (2)
.............................................................. units of insulin
(ii) The athlete miscalculated his carbohydrate intake to be greater than his
actual intake.
Explain how the increase in the number of units injected would affect his blood glucose concentrations. (2)
(b) (i) A patient visits his doctor because he is putting on weight but does not think he is increasing his calorie intake.
The patient has a height of 1.9m and a body mass of 120kg.
What is his BMI? (1)
Explain how the increase in the number of units injected would affect his blood glucose concentrations. (2)
(b) (i) A patient visits his doctor because he is putting on weight but does not think he is increasing his calorie intake.
The patient has a height of 1.9m and a body mass of 120kg.
What is his BMI? (1)
The doctor diagnosed this person with an underactive thyroid gland.
*(ii) Explain why an underactive thyroid could cause this patient to have an increased body mass. (6)
(Total for Question 7 = 11 marks)
*(ii) Explain why an underactive thyroid could cause this patient to have an increased body mass. (6)
(Total for Question 7 = 11 marks)