question_answer

  Given below figure shows a diagram of a kidney and associated structures. The tables list the percentages of certain components found within structures A and B.

In Structure A
Components	Concentration %
Urea	0.03
Glucose	0.10
Amino acids	0.05
Salts	0.72
Proteins	8.00
In Structure B
Components	Concentration %
Urea	2.00
Glucose	0.00
Amino acids	0.00
Salts	1.50
Proteins	0.00

(a) Using only the information in the tables in given figure deduce the functions of the kidney. (b) Explain how the proportions of the components present in B would change after eating meat and if a person suffering from diabetes.

Answer:

                  (a) The urea content would be higher since more amino acids from the protein in the meat will have been delaminated. The salt content may also be a little higher. (b) There would be glucose in B since without insulin, blood glucose would not have been turned to glycogen for storage. The kidney then attempts to reduce the blood glucose level.                                                                   (5)