Download Chapter 10 Keywords/Objectives

AP Biology/Ms. Mezzetti
Chapter 10: Photosynthesis Objectives
Answer the following questions in your notebook
The Process That Feeds the Biosphere
1. Distinguish between autotrophic and heterotrophic nutrition.
2. Distinguish between photoautotrophs and chemoautotrophs.
3. Describe the structure of a chloroplast, listing all membranes and compartments.
The Pathways of Photosynthesis
4. Write a summary equation for photosynthesis.
5. Explain van Niel's hypothesis and describe how it contributed to our current understanding of
photosynthesis. Explain the evidence that supported his hypothesis.
6. In general terms, explain the role of redox reactions in photosynthesis.
7. Describe the two main stages of photosynthesis in general terms.
8. Describe the relationship between an action spectrum and an absorption spectrum. Explain why the action
spectrum for photosynthesis differs from the absorption spectrum for chlorophyll a.
9. Explain how carotenoids protect the cell from damage by light.
10. List the wavelengths of light that are most effective for photosynthesis.
11. Explain what happens when a solution of chlorophyll a absorbs photons. Explain what happens when
chlorophyll a in an intact chloroplast absorbs photons.
12. List the components of a photosystem and explain the function of each component.
13. Trace the movement of electrons in noncyclic electron flow. Trace the movement of electrons in cyclic
electron flow.
14. Explain the functions of cyclic and noncyclic electron flow.
15. Describe the similarities and differences in chemiosmosis between oxidative phosphorylation in
mitochondria and photophosphorylation in chloroplasts.
16. State the function of each of the three phases of the Calvin cycle.
17. Describe the role of ATP and NADPH in the Calvin cycle.
18. Describe what happens to rubisco when O2 concentration is much higher than CO2 concentration.
19. Describe the major consequences of photorespiration. Explain why it is thought to be an evolutionary relict.
20. Describe two important photosynthetic adaptations that minimize photorespiration.
21. List the possible fates of photosynthetic products.
Keywords: Writing definitions is optional
absorption spectrum
autotroph
C3 plant
Calvin cycle
carbon fixation
chlorophyll
chlorophyll b
cyclic electron flow
glyceraldehyde-3-phosphate (G3P)
light reactions
mesophyll
NADP+
action spectrum
bundle-sheath cell
C4 plant
CAM plant
carotenoid
chlorophyll a
crassulacean acid metabolism
(CAM)
electromagnetic spectrum
heterotroph
light-harvesting complex
mesophyll cell
noncyclic electron
flow
spectrophotometer
stroma
visible light
rubisco
stoma
thylakoid
wavelength
PEP carboxylase
photophosphorylation
photosynthesis
photosystem I (PS I)
primary electron acceptor
photon
photorespiration
photosystem
photosystem II (PS II)
reaction center
Word Roots
auto- 5 self; -troph 5 food (autotroph: an organism that obtains organic food molecules without eating other
organisms)
chloro- 5 green; -phyll 5 leaf (chlorophyll: photosynthetic pigment in chloroplasts)
electro- 5 electricity; magnet- 5 magnetic (electromagnetic spectrum: the entire spectrum of radiation)
hetero- 5 other (heterotroph: an organism that obtains organic food molecules by eating other organisms
or their by-products)
meso- 5 middle (mesophyll: the green tissue in the middle, inside of a leaf)
photo- 5 light (photosystem: cluster of pigment molecules)
Modified version from Instructors Guide Campbell and Reece Seventh Edition