Chapter 20: Maintaining the Internal Environment
Animations
20.1: Activity: Relationship between surface area and volume
Use this interactive exercise to investigate the relationship between surface area and volume in cells.
20.2: Tutorial: The human kidney
This tutorial explores how the human kidney regulates internal water content and removes toxic wastes.
20.3: Activity: The human kidney
Test your recall for figure 20.8 with this key figure labeling exercise.
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Other Resources
Instructors now have an easy way to collect students’ online quizzes with the Norton Gradebook without flooding their inboxes with e-mails.
Students can track their online quiz scores by setting up their own Student Gradebook.