page 12 17. Graphs 1 and 2 show how the rate of glucose uptake by the liver is affected by the concentrations of glucose and insulin in the blood. concentration of insulin in the blood (units/cm3) Graph 1 concentration of glucose in the blood (mg/100 cm3) 15 10 5 0 0 20 40 60 80 100 Graph 2 concentration of insulin in the blood (units/cm3) rate of glucose uptake by liver (μg/g of liver/hour) 0 2 4 6 0 5 10 15 20 25 The mass of glucose taken up in 30 minutes by a 1.4 kg liver when the concentration of glucose in the blood is 60 mg/100 cm3 is: A 2 μg B 4 μg C 2800 μg D 5600 μg.