AnswersFL-2001340-Environmental Science BHuman Impact on the Environment

Week 6: Light Dependent Reactions in Photosynthesis Answers

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1
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What is the source of energy that drives photosynthesis?

A
sunlight
B
hydrogen ions
C
electrons
D
oxygen
2
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Jasmine and Marcus are at the park, and Jasmine makes the following statements. Which of them is an inference?

A
The leaves are green.
B
The flowers are breathtaking.
C
The plant is producing oxygen.
D
The bush has thorns.
3

Along with plants and algae, in which organisms can photosynthesis occur?

A
some bacteria
B
all fungi
C
some animals
D
all protists
4

During the light-dependent reaction of photosynthesis, light energy is converted into which form of energy?

A
chemical
B
mechanical
C
thermal
D
electrical
5

Through which conversion is energy released?

A
ADP to ATP
B
ATP to ADP
C
NADP+ to NADPH
D
CO2 and H2O to C6H12O6 and O2
6

The diagram summarizes the light-dependent reactions of photosynthesis. What is the input of the light-dependent reactions, labeled X?

Question illustration
A
CO2, H2O, O2, and light
B
CO2, H2O, and light
C
CO2 and H2O
D
H2O and light
7

How is ADP converted to ATP?

A
by the addition of one adenosine molecule
B
by the addition of one phosphate group
C
by the removal of one adenosine molecule
D
by the removal of one phosphate group
8

Which best lists the end products of the light-dependent reactions of photosynthesis?

A
ATP and NADPH
B
CO2 and H2O
C
ATP, NADPH, and O2
D
C6H12O6 and O2
9

Which is the correct chemical equation for photosynthesis?

A
6CO2 + 6H2O ® C6H12O6 + 6O2
B
C6H12O6 + 6O2 ® 6CO2 + 6H2O
C
3CO2 + 3H2O + 3O2® C6H12O6
D
6O2 + 6H2O ® C6H12O6 + 6CO2
10

Consider the following events of photosynthesis.1. Light energy excites electrons.2. Water molecules are split.3. NADPH is formed.In which locations do each of these events occur?

A
1. photosystem II2. photosystem I3. photosystem I
B
1. photosystem II2. photosystem II3. photosystem I
C
1. photosystem I2. photosystem I3. photosystem II
D
1. photosystem I2. photosystem II3. photosystem II

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