Edexcel A-Level Biology A2 7.21 Adh and Osmoregulation Questions

Trace osmoreceptor detection and pituitary ADH release, explain aquaporin insertion in collecting ducts, and interpret urine concentration and output from marked Edexcel evidence.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
A2

Exam points

  • trace osmoreceptor detection, hypothalamus signalling and pituitary ADH release in negative feedback
  • explain how ADH inserts aquaporins and increases collecting-duct water reabsorption
  • calculate or interpret urine output and concentration changes from ADH and water-balance data

Edexcel A-Level Biology A2 7.21 Adh and Osmoregulation Questions question 1

[Maximum number: 1]

The kidney is involved in the process of homeostasis in a mammal.

Antidiuretic hormone (ADH) is required for homeostasis.

How many of these parts of the kidney respond to ADH?
- Bowman's capsule
- collecting duct
- Ioop of Henle
- proximal tubule

A 1
B 2
C 3
D 4

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