Download Chapter 46 Objectives

Chapter 10 Objectives and Key Terms
Photosynthesis
General Comment: Chapter 10 tells us about how plants make oxygen and sugar so
many other organisms can live. It is very “cellular” in nature in terms of know the
cellular physiology that occurs so sugars can be made. Different adaptations by plants to
their environments are also discussed.
Note: Bold objectives are listed by Campbell as the College Board Performance
Objectives.
Objectives
Photosynthesis in Nature
1.
Distinguish between autotrophic and heterotrophic nutrition.
2.
Distinguish between photoautotrophs and chemoautotrophs.
3.
Describe the structure of chloroplasts and indicate their locations within plant cells.
Describe where most chloroplasts are located in a leaf.
4.
Explain how chloroplast structure relates to its function.
5.
Write a summary equation for photosynthesis.
The Pathways of Photosynthesis
6.
Explain van Niel's hypothesis and describe how it contributed to our current understanding
of photosynthesis.
7.
Explain the role of redox reactions in photosynthesis.
8.
Describe in general the two main stages of photosynthesis.
9.
Describe the wavelike and particle-like behaviors of light.
10. Describe the relationship between an action spectrum and an absorption spectrum.
11. Explain why the absorption spectrum for chlorophyll differs from the action spectrum for
photosynthesis.
12. List the wavelengths of light that are most effective for photosynthesis.
13. Explain what happens when chlorophyll or accessory pigments absorb photons.
14. List the components of a photosystem and explain their functions.
Science as a Process
15. Trace electron flow through photosystems II and I.
16. Compare cyclic and noncyclic electron flow and explain the relationship between these
components of the light reactions.
17. Describe important differences in chemiosmosis between oxidative phosphorylation in
mitochondria and photophosphorylation in chloroplasts.
18. Summarize the carbon-fixing reactions of the Calvin cycle and describe changes that
occur in the carbon skeletons of intermediates.
19. Describe the role of ATP and NADPH in the Calvin cycle.
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Chapter10: Campbell 6th ed.
20. Describe what happens to rubisco when the O2 concentration is much higher than CO2.
21. Describe the major consequences of photorespiration.
22. Describe two important photosynthetic adaptations that minimize photorespiration.
23. Describe the fate of photosynthetic products.
College Board Performance Objectives
1. Explain how photosynthesis converts light energy into chemical energy.
2. Describe how the chemical products of the light-trapping reactions coupled
to the synthesis of carbohydrates.
3. Explain the kinds of photosynthetic adaptations that have evolved in
response to different environmental conditions.
4. Explain what interactions exist between photosynthesis and cellular
respiration.
College Board Lab Objectives:
1. Conduct chromatography to separate two or more compounds that are
initially present in a mixture and calculate their Rf values.
2. Design a lab that tests the relationship between light wavelength or light
intensity or temperature and photosynthetic rate.
3. Explain why the rate of photosynthesis varies under different environmental
conditions.
Key Terms
photosynthesis
autotroph
heterotroph
action spectrum
mesophyll
C3 plant
photorespiration
C4 plant
Bundle-sheath cell
carbon fixation
wavelength
electromagnetic spectrum
visible light
spectrophotometer
absorption spectrum
chlorophyll a
chlorophyll
stomata
light reactions
Calvin cycle
NADP+
photophosphorylation
photosystem I
photosystem II
noncyclic electron flow
photon
cyclic photophosphorylation
glyceraldehydes-3-phosphate
chlorophyll b
rubisco
carotenoids
photosystems
reaction center
primary electron acceptor
mesophyll cell
PEP carboxylase
crassulacean acid metabolism
CAM plants
cyclic electron flow
-troph
electromeso-
chloromagnetphoto-
Word Roots
auto-phyll
hetero-
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self
leaf
other
food
electricity
middle
2
green
magnetic
light
Chapter10: Campbell 6th ed.