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WorksheetsPhotosynthesis
Total questions: 10
Worksheet time: 12mins
Name
Class
Date
1.
The O2 released during photosynthesis comes from .
a)
CO2
b)
H2O
c)
NADPH
d)
RuBP
2.
Which of the following is an important difference between light-dependent and light-independent reactions of photosynthesis?
a)
The light-dependent reactions occur only during the day; the light-independent reactions occur only during the night.
b)
The light-dependent reactions occur in the cytoplasm; the light-independent reactions occur in chloroplasts.
c)
The light-dependent reactions utilize CO2 and H2O; the light-independent reactions produce CO2 and H2O.
d)
The light-dependent reactions produce ATP and NADPH2; the light-independent reactions use energy stored in ATP and NADPH.
3.
The single, flattened structure is called a
a)
Stroma
b)
Pigment
c)
Thylakoid
d)
Chloroplast
4.
The end products of the light-dependent reactions of photosynthesis are .
a)
ADP, H2O, NADPH2
b)
ADP, PGAL, RuBP
c)
ATP, CO2, H2O
d)
ATP, NADPH2, O2
5.
The diagram shows photosystems II and I. What is a major event that occurs when matter and energy moves through photosystem II?
a)
ATP is synthesized
b)
Water molecules are split
c)
Chlorophyll is produced
d)
CO2 is used
6.
The most important role of pigments in photosynthesis is to _____.
a)
capture light energy
b)
screen out harmful ultraviolet rays
c)
store energy in glucose molecules
d)
release energy from glucose molecules
7.
Chlorophyll molecules are in which part of the chloroplast?
a)
grana stacks
b)
stroma
c)
stomata
d)
plasma membrane
8.
Light reactions do all of the following EXCEPT _____.
a)
convert sunlight to chemical energy
b)
synthesize ATP and NADPH2
c)
reduce CO2
d)
convey excited electrons from chlorophyll to an electron acceptor (NADPH2)
9.
The energy required to run the light-independent reactions of photosynthesis comes from which two substances produced during the light-dependent reactions?
a)
ATP and NADPH2
b)
ADP and PO4
c)
H+ and O2
d)
O2 and ATP
10.
What is an end product of this reaction?
a)
Chlorophyll A and B
b)
H2O
c)
CO2
d)
A glucose molecule
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