Some people have diabetes. In type 1 diabetes, the pancreas does not make enough insulin. Fig. 7.1 shows the blood glucose concentrations of a type 1 diabetic person and a non-diabetic person at regular intervals after they drink a glucose drink. Describe the results shown in Fig. 7.1.
Name the location of the receptors in a non-diabetic person that detect changes in blood glucose concentration.
Name the homeostatic mechanism that maintains blood glucose concentration.
The urine of a non-diabetic person contains no glucose. A person with type 1 diabetes will excrete glucose in urine. The concentration of glucose in urine can be estimated with a dipstick. Fig. 7.2 shows how a dipstick works. Name enzymes A and B.
An electronic biosensor can be used to measure the glucose concentration in a drop of blood. Suggest one advantage of using a biosensor and one advantage of using a dipstick to measure glucose concentration.
Describe the role played by insulin in controlling blood glucose concentration.