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Light Dependent Reactions in Photosynthesis — Quiz Answers

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Which event occurs in photosystem I?

A
Electrons are transferred to ferredoxin.
B
Water molecules are broken apart.
C
Light energy excites electrons.
D
Oxygen is released as waste.
3

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

A
cap c sub 6 cap h sub 12 cap o sub 6 and cap o sub 2
B
ATP, NADPH, and cap o sub 2
C
CO sub 2 and cap h sub 2 cap o
D
ATP and NADPH
4

Which best describes how the photosystems are used in the light-dependent reactions?

A
Both processes are used during the light-independent reactions.
B
Both processes are used at the same time.
C
photosystem I is used first then photosystem II
D
photosystem II is used first then photosystem I
6

How is ADP converted to ATP?

A
by the addition of one phosphate group
B
by the removal of one phosphate group
C
by the removal of one adenosine molecule
D
by the addition of one adenosine molecule
7

Consider these 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 I 2. photosystem I 3. photosystem II
B
1. photosystem II 2. photosystem II 3. photosystem I
C
1. photosystem II 2. photosystem I 3. photosystem I
D
1. photosystem I 2. photosystem II 3. photosystem II
8

Which is the correct chemical equation for photosynthesis?

A
6 CO sub 2 plus 6 cap h sub 2 cap o rightarrow cap c sub 6 cap h sub 12 cap o sub 6 plus 6 cap o sub 2
B
cap c sub 6 cap h sub 12 cap o sub 6 plus 6 cap o sub 6 rightarrow 6 CO sub 2 plus 6 cap h sub 2 cap o
C
3 CO sub 2 plus 3 cap h sub 2 cap o plus 3 cap o sub 2 rightarrow cap o sub 6 cap h sub 12 cap o sub 6
D
6 cap o sub 2 plus 6 cap h sub 2 cap o rightarrow cap c sub 6 cap h sub 12 cap o sub 6 plus 6 CO sub 2
9

Which is the best description of photophosphorylation?

A
the absorption of light energy by chlorophyll
B
the removal of a phosphate group from a molecule
C
the conversion of ADP to ATP using light energy
D
the conversion of light energy to chemical energy

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