The Structure of Chloroplasts
stroma :
thylakoids:
granna:
Overview of Photosynthesis
This is an _________________________ Reaction, meaning energy from the
_________ is stored in the product ______________.
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Overview: Photosynthesis has Two Stages:
I.
Light Reaction
II.
Calvin Cycle
The overall result of the Light
Reactions is the conversion of
______________ ENERGY into
_____________ ENERGY stored in
the two compounds: ___________
& ___________
The overall purpose of the CALVIN
CYCLE is to make
_________________________
from _______ & the ___________
carried by NADPH
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Light Energy and Pigments
Plants contain chemicals specially designed to
absorb light energy called
____________________________ such as
___________________________.
Chlorophyll a and b are best able to capture light
energy in the _____________ and
_____________ wavelengths.
Harvesting Light Energy in a Photosystem
Each time a pigment molecule absorbs light energy, the pigment's electrons gain energy. What
happens to the electrons in the pigment molecule?
How is sunlight energy “captured”? What is it then used for?
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I. Details of the Light Reaction
1. What molecule provides the continual supply of Electrons for the Electron Transport Chain?
__________________________
2. How are electrons stimulated to transfer down the Electron Transport chain?
3. Summarize where the energy ends up at the end of the Light Reactions:
4. The Light Reactions are very much like what other process that we studied?
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I. Summarize Light Reaction: (take place _________________________)
Inputs
Outputs
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Another name for the Calvin cycle? _____________________________________
What are the INPUTS of the Calvin Cycle?
1. ___________ from the Atmosphere. The Carbon will be used to form the Sugar (Glucose)
2. __________ from Light Rx will provide the energy for the assembly of the sugar molecule.
3. ________________from Light Rx provides the high-energy electrons and Hydrogen
ions to assemble the sugar molecule
What are the OUTPUTS of the Calvin Cycle?
1. A high-energy sugar called ____________ which is used to make glucose and many
other organic compounds.
2. ________________ from spent ATP molecules go back to the light Rx to be recharged.
3. ________________ which have dropped off their high energy electrons, return to the
light Rx too.
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II. Summarize Calvin Cycle: (takes place ___________________)
Inputs
Outputs
Overview Once Again:
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The Carbon Cycle
Trace the Carbon cycle from organic to inorganic forms.
Give an example of carbon moving from an inorganic compound to an organic compound in
the carbon cycle. Give an example of carbon moving from an organic to an inorganic
compound.
Photosynthesis and Global Climate
greenhouse effect:
Reviewing Concepts
Multiple Choice
1. In a plant cell, where do the light reactions of photosynthesis occur?
a. the stomata
b. the stroma
c. the thylakoids
d. the mitochondria
2. The chemical products of the light reactions are oxygen,
a. NADP+, and ADP.
b. sugar, and water.
c. carbon dioxide, and ATP.
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d. ATP, and NADPH.
3. The stage of photosynthesis that uses the most ATP molecules is
a. the light reactions.
b. the Calvin cycle.
c. the electron transport chain.
d. glycolysis.
4. The Calvin cycle converts carbon dioxide to
a. ADP and NADPH.
b. water.
c. a sugar called G3P.
d. chlorophyll.
5. The process by which carbon moves from inorganic carbon dioxide to organic compounds and back is
called
a. the electron transport chain.
b. the carbon cycle.
c. the electromagnetic spectrum.
d. chromatography.
7. Copy the concept map below and fill in the blank spaces to describe the process of
photosynthesis.
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