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 - 51.4 - The Nephron Is the Basic Functional Unit of Vertebrate Excretory Systems - 51.4 Recap - Learning Outcomes - Page 1102: 4


Urine mostly consists of small molecules, which are typically easier to filter than larger molecules because of how easily they diffuse across the membrane. Blood, however, contains larger proteins that make filtration more complex.

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