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Unit 1:
Ch. 1
Ch. 2
Ch. 3
Interlude A
Unit 2:
Ch. 4
Ch. 5
Ch. 6
Ch. 7
Ch. 8
Ch. 9
Interlude B
Unit 3:
Ch. 10
Ch. 11
Ch. 12
Ch. 13
Ch. 14
Ch. 15
Interlude C
Unit 4:
Ch. 16
Ch. 17
Ch. 18
Ch. 19
Interlude D
Unit 5:
Ch. 20
Ch. 21
Ch. 22
Ch. 23
Ch. 24
Ch. 25
Ch. 26
Ch. 27
Ch. 28
Ch. 29
Ch. 30
Interlude E
Unit 6:
Ch. 31
Ch. 32
Interlude F
Unit 7:
Ch. 33
Ch. 34
Ch. 35
Ch. 36
Ch. 37
Ch. 38
Interlude G
The animations require the latest Flash 7 and Shockwave plug-ins.
6.1: Tutorial: Active versus passive movement of molecules

This tutorial explains how cells use active and passive transport to move materials across the plasma membrane.

6.2: Activity: Water gain and loss in plant and animal cells

Manipulate the slider to see what happens to a cell as changes occur in the concentration of dissolved materials outside of the cell.

6.3: Activity: Animal cell junctions

Test your recall for figure 6.7 with this key figure labeling exercise.

6.4: Tutorial: Signaling molecules

This tutorial explores how specialized proteins, called enzymes, speed up chemical reactions.

6.1: Process Animation: Active Transport

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6.2a: Process Animation: Exocytosis

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6.2b: Process Animation: Endocytosis

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6.3: Process Animation: Signaling molecules

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6.4: Process Animation: A Cell's Response to a Steroid Hormone

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Norton Gradebook

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.