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CAIE A Level Biology 9700 · Homeostasis

Homeostasis: outline question

Outline5 marksStandard

The diagram shows a nephron with structures labelled A–E.

  • A is the glomerulus
  • B is the Bowman's capsule
  • C is the proximal convoluted tubule
  • D is the loop of Henle
  • E is the collecting duct

Using your knowledge of kidney structure and function, outline: (a) how ultrafiltration produces glomerular filtrate in the Bowman's capsule (b) how selective reabsorption occurs in the proximal convoluted tubule

0 words · 5 marks

No account needed for your first marks. Your answer is used only to mark it.

How this question is marked

5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.

Outline means: Give the main points briefly. Less detail than describe, but every key step has to be there. One short line per step, in order. The marks are for coverage, not depth.

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