U.C.E BIOLOGY 1998 PAPER 1 QN 31

Figure 4 below, shows a mammalian urinary system.a) Name the parts labelled A – F.

A ………………………………………………….. D ………………………………………….

B ………………………………………………….. E …………………………………………..

C ………………………………………………….. F …………………………………………..

b) Briefly explain why the concentration of urea in B is less than that in C.

c) What is the function of E?

d) A sample of urine was found to contain sugar.

(i) Suggest the type of sugar likely to be contained in the urine sample.

(ii) What hormone is likely to be deficient in the person from whom the urine sample was taken?

(iii) Name the disease that the person is likely to be suffering from

e) Another individual was found to be passing out a lot of urine but without sugar and complaining of thirst most of the time.

(i) Suggest a hormone that is deficient in this individual.

(ii) Name the organ which produces the hormone referred to in (e) (i) above.

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