Biology 9700 · AS & A Level · Homeostasis in mammals

Homeostasis in mammals — practice question

Ultrafiltration takes place in the Bowman’s capsule of a nephron. Fig. 1.1 shows a diagram of part of a Bowman’s capsule and glomerulus.
(a)[4]

Using Fig. 1.1, fill in Table 1.1 with letters A-F. A letter may be used once, more than once, or not used at all. The features listed are: glomerular filtrate, basement membrane, podocyte cell, capillary endothelial cell.

(b)[5]

Describe and explain how the structures in the Bowman’s capsule and the blood supply associated with it are adapted to make ultrafiltration possible.

(c(i))[2]

Comment on the relationship between GFR and mean renal arterial blood pressure shown in Fig. 1.2.

(c(ii))[1]

Suggest one reason why a person’s GFR might fall.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: Shows glomerular filtrate as E

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