As energy passes from blue-absorbing chlorophylls down to red-absorbing chlorophylls, surprisingly, no energy passes from lower energy-absorbing pigments back to higher ones (in other words, the process is irreversible). Why might that be?
As energy passes from blue-absorbing chlorophylls down to red-absorbing chlorophylls, surprisingly, no energy passes from lower energy-absorbing pigments back to higher ones (in other words, the process is irreversible). Why might that be?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:7. For an organism to convert enough energy to survive, it needs more than one
chlorophyll gathering light. Usually, they are spread out and around the reaction center
and act as an antenna (see figure below). The outer chlorophyll molecules absorb the
highest energy visible light. These chlorophylls pass the energy onto chlorophylls closer
to the reaction center that absorb lower energy light, and the process continues until
the energy reaches the reaction center (see figure below.)
Blue-absorbing pigments
Orange-absorbing
pigments
Red-absorbing
pigments
=chorophyll
Reaction
=reaction center
center
Figures adapted from Blankenship
As energy passes from blue-absorbing chlorophylls down to red-absorbing chlorophylls,
surprisingly, no energy passes from lower energy-absorbing pigments back to higher
ones (in other words, the process is irreversible). Why might that be?
Energy
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