Skip to content


Choose a Chapter below or view the Sitemap

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

fiogf49gjkf0d
Seeing How Plants Split Water Could Provide Key to Our Future Energy Needs
Science, Feb. 2004

The possibility of using the Earth's abundant supply of water as a cheap source of hydrogen is a step closer thanks to researchers from Imperial College London. By mimicking the method that plants use to split water, researchers say that a highly energy-efficient way to form cheap supplies of hydrogen fuel is possible in the future.

» Read the full article

Active Reading Questions

  1. fiogf49gjkf0d
    During photosynthesis, sunlight splits a water molecule to yield which of the following products?
    a) hydrogen
    b) oxygen
    c) an excited electron
    d) all of the above
  2. fiogf49gjkf0d
    The splitting of water at the photosystems occurs during the ___________ reactions.
    a) dark reactions
    b) light reactions
    c) Calvin reactions
    d) Krebs cycle
  3. fiogf49gjkf0d
    fiogf49gjkf0d
    Where do the light reactions of photosynthesis occur? Be sure to discuss what type of organism as well as what structures are involved.
First Name:
Last Name:
Your Email Address:
Your Professor's Email Address:

Chapter Menu

Other Resources

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.