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Edexcel A-Level Biology A2 7.19 Urea Production and Ultrafiltration Questions

Trace deamination in the liver, identify pressure created by arteriole diameters and use molecule size plus filtration-barrier features to justify what enters filtrate.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
A2

Exam points

  • Explain deamination of excess amino acids and conversion of amine groups to urea.
  • Link afferent and efferent arteriole diameters to high glomerular pressure.
  • Calculate filtration volume or GFR from time, blood volume or marker data.

Edexcel A-Level Biology A2 7.19 Urea Production and Ultrafiltration Questions question 1

[Maximum number: 1]

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

The electron micrograph shows a transverse section of part of a proximal tubule.

Figure for Question Edexcel A-Level Biology A2 7.19 Urea Production and Ultrafiltration Questions question 1 — Edexcel A-Level Biology A2

Name the process by which the fluid moves from the plasma into the renal tubule (nephron).

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