Name ___________________________
Chapter 10 Photosynthesis
Study Guide
OBJECTIVES
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Identify the locations for the light reactions and the Calvin cycle within a plant chloroplast.
Understand the discovery of the photosynthetic processes from an historical perspective.
Understand how light energy is packaged and how its absorption is related to wavelength.
Explain how electrons are captured by and transferred through the various molecules of a
plant’s photocenter.
Describe cyclic photosynthesis and compare it to noncyclic photosynthesis and explain its
function in the plant cell.
Understand how photosystem I and photosystem II in plants produce ATP and NADPH
Compare and contrast chemiosmosis in photosynthesis (chloroplasts) and in cellular
respiration (mitochondria).
Describe the Calvin cycle in plants. Include the significance of ATP and NADPH and the
ultimate products of the reaction.
Understand how photorespiration affects C3 photosynthesis.
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Compare C4 and CAM photosynthesis and how they combat photorespiration.
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College Board Lab Objectives:
 Conduct chromatography to separate two or more compounds that are initially present in
a mixture and calculate their Rf values.
 Design a lab that tests the relationship between light wavelength or light intensity or
temperature and photosynthetic rate.
 Explain why the rate of photosynthesis varies under different environmental conditions.
Terms:
light-dependent reactions
Calvin cycle
light-independent reactions
photosystem
carbon fixation
absorption spectrum
pigments
chlorophylls
action spectrum
carotenoids
photosystems
cyclic photophosphorylation
photosystem II
photosystem I
enhancement effect
noncyclic photophosphorylation
Calvin cycle
C3 photosynthesis
carbon fixation
photorespiration
C4 photosynthesis
crassulacean acid metabolism (CAM)
Question
A. Summarize the main events occurring in Photosynthesis.
Sketch the leaf and label the leaf tissues. Sketch the chloroplast and label its parts.
(These come from figure 10.2)
B. Write the overall equation for photosynthesis:
C. Define stroma and grana.
D. Briefly describe the famous series of experiments that led to our current understanding
of photosynthesis:
Jan Baptista van Helmont
Joseph Priestly (ha ha)
Jan Ingenhousz
F.F. Blackman
C.B. van Niel
Robin Hill
Miss Wise (j/k)
E. What color of (visible) light has the shortest wavelength? The most energy?
If the above is true, then why is chlorophyll green? Why are there other pigments as well?
F. Draw a photosystem (see 10.10 in Raven).
G. Relate an antenna complex to a reaction center.
H. Compare Cyclic and Non-Cyclic Photosystems.
For each discuss:
what type of organism uses it
the name of the reaction center(s), which tells the predominant wavelength absorbed
which is the oldest
whether or not oxygen is required
whether or not light is required
what is produced in each
I. Notice that the photosystems seem to be out of order.
J. Compare chemiosmosis of photosynthesis (which includes photophosphorylation) with
the electron transport chain of cellular respiration (which includes oxidative
phosphorylation).
K. Compare C3, C4, and CAM plants.
BE SURE TO COMPLETE SELF TEST AT SOME POINT BEFORE THE SCHEDULED MINIQUIZ ; )