PhQtosynthesis
Part A: Nve the term that best describes the definition
1.
An important group of photosynthetic pigments in plants and algae•
The process that uses NADPH and ATP to construct carbohydrates from
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carbon dioxide.
A molecule that absorbs certain wavelengths of light and reflects or transmits
3.
others.
An energy storing molecule used by most organisms.
An organism that cannot make its own food.
An organism that produces its own food from inorganic compounds and
4.
5.
6.
sunlight.
An organelle common in plants and algae that converts sunlight, carbon
dioxide, and water into sugars.
8.
The stacks of disc-shaped structures inside the chloroplast.
9.
An individual disc- shaped structure within the chloroplast, contains
chlorophyll and all other pigments necessary for photosynthesis.
7.
10.
A gel-like matrix surrounding the thylakoids, the site of sugar-producing
reactions in photosynthesis.
Part B: Choose the best answer or answers.
1. Water is
" Oxygen is ÿ
a. a reactant in the light reactions
c. a reactant in the Calvin cycle
b. produced by the light reactions
d. produced by the Calvin cycle
a. a reactant in the light reactions b. produced by the light reactions
c. a reactant in the Calvin cycle
d. produced by the Calvin cycle
a. a reactant ifi the light reactions
c. a reactant in the Calvin cycle
b. produced by the light reactions
d. produced by the Calvin cyclÿ
4. Carbon dioxide is. a. a reactant in the light reactions
c. a reactant in the Calvin cycle
b. produced by the light reactions
d. produced by the Calvin cycle
5. ATP is __
a. a reactant in the light reactions
c. a reactant in the Calvin cycle
b. produced by the light reactions
d. produced by the Calvin cycle
a. a reactant in the light reactions
b. produced by the light reactions
d. produced by the Calvin cycle
3. Sugar is
6. ADP is
c. a reactant in the
7. The Calvin cycle
8. The light reactions
Calvin cycle
a. requires light
c. splits water
• a. requires light
c. splits water
9. The light reactions and the Calvin cycle occur in
a. nucleus
b. mitochondria
b. does not require light
d. uses carbon dioxide
b. does not require light
d. uses carbon dioxide
c. cytoplasm
d. chloroplast
c. yellow light
d. violet light
10. Chlorophyll is best able to absorb
a. green light
b. orange light
Part C: .answer the questions.
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Explain the role that each of the following materials play in photosynthesis, and how that material is
obtained by the plant.
a. Water:
i. Role
b. Carbon dioxide:
i. Role
ii. Obtained by
ii. Obtained by
2. The atmosphere of early Earth contained no oxygen. Explain how single-celled plants were able to
evolve under these conditions.
.
Scientists worry that deforestation of large regions of Earth may increase the amount of carbon dioxide
in the atmosphere and cause increased global warming. Explain why deforestation might affect the
atmospheric carbon dioxide levels.
4. Caroteniods are the plant pigments thatÿive the leaves of some plants their yellow and red color in the
fall, and make pumpkins appear @range. What colors of light do caroteniod pigments reflect?
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Part D: Label the phases and everything that goes into photosynthesis and the product that result from
photosynthesis in the appropriate area of the diagram.
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