Life: The Science of Biology 11th Edition

Published by W. H. Freeman
ISBN 10: 1-31901-016-4
ISBN 13: 978-1-31901-016-4

Chapter 51 - Salt and Water Balance and Nitrogen Excretion - 51.2 - Animals Excrete Nitrogen as Ammonia, Urea, or Uric Acid - 51.2 Recap - Learning Outcomes - Page 1097: 2

Answer

As the most concentrated nitrogenous waste, uric acid is released by uricotelic animals in arid climates to minimize water loss. Uric acid is insoluble in water and is therefore released as a colloidal substance.

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