N A V I G A T I O N  HOME  LESSONS       Animations       Quiz       Glossary       My Progress       Login request       Lost Password       Contact Instructor       FAQ  USING LESSONS  HISTORY OF PROJECT  ACKNOWLEDGEMENTS  LICENSES  DOWNLOADS  REVIEW  PROFESSIONAL SOCIETIES

Plant Pigments and Photosynthesis: Introduction for Plant Pigments and Photosynthesis John Markwell Department of Agronomy and Horticulture at University of Nebraska-Lincoln, USA Deana Namuth Department of Agronomy and Horticulture at University of Nebraska-Lincoln, USA Lesson Navigation Tips: - Click on 'Animations' button found to the left in order to view the animation which supplements this lesson. You can also click on the animation icon within the text. - Click once on figures to see enlarged versions. - Click once on words in color to bring up their definitions. Overview This lesson will examine the two major classes of phototsynthetic pigments, chlorophylls and carotenoids, their biochemical structures and their biosynthesis. The organization of these pigments into photosynthetic pigments, which are protein complexes that harvest light and convert its energy into biochemical energy will be explained. Objectives At the completion of this lesson, students will be able to: -Understand the importance of conjugated double-bond systems in pigments -Relate the first and second excited singlet states to a pigment's absorption spectrum -Understand photophosphorylation as the coupling of photochemistry to photosynthetic electron transfer -Describe the photosynthetic apparatus in terms of two photosystems -Understand that CO2 fixation relies upon the ATP and NADPH produced by photophosphorylation Development of this lesson was supported in part by Cooperative State Research, Education, & Extension Service, U.S. Dept of Agriculture under Agreement Number 98-EATP-1-0403 administered by Cornell University and the American Distance Education Consortium (ADEC). Any opinions, findings, conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. This manuscript has been assigned Journal Series NO. 03-9, College of Agricultural Sciences and natural Resources, University of Nebraska.