Biology 9700 · AS & A Level · Homeostasis in mammals

Homeostasis in mammals — practice question

The kidney plays a major part in homeostasis, and one of its functions is osmoregulation.
(a(i))[2]

Fig. 5.1 is a photomicrograph showing part of a kidney nephron. Identify the structures labelled A and B in Fig. 5.1.

(a(ii))[4]

Describe the way blood is filtered in the part of the kidney nephron shown in Fig. 5.1.

(b(i))[2]

Identify the molecules labelled C and D in Fig. 5.2. C ........................................................ D ........................................................

(b(ii))[4]

Describe the pattern shown in Fig. 5.3 and explain the effect of type C SIAD on osmoregulation.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: A is the glomerulus

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI