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Printed: October 25, 2023
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Cellular respiration and photosynthesis Worksheet
Visit CK12.org for Free Online Practice
1. Fill in the blank(s):
Photosynthesis produces oxygen and ____________________ used in cellular respiration.
2. Cellular respiration and photosynthesis are important processes in the recycling of carbon.
a. TRUE
b. FALSE
3. Which equation correctly shows the reactants and products of photosynthesis?
a.
b.
c.
d.
C6 H10 O6 + 6O2 → 6C O2 + 6H2 O
C6 H12 O6 + 6C O2 → 6O2 + 6H2 O
6O2 + 6H2 O → C6 H10 O6 + 6C O2
6C O2 + 6H2 O → C6 H12 O6 + 6O2
4. If plants were removed from an area, which statement below describes best the outcome?
a. Carbon dioxide levels would increase
b. Oxygen levels would increase.
c. Carbon dioxide levels would decrease.
5. Which statement is NOT true concerning cellular respiration?
a.
b.
c.
d.
Chemical energy in glucose is used to produce chemical energy in ATP.
Carbon dioxide is formed during cellular respiration.
Light energy is used to make ATP.
Cellular respiration occurs in the mitochondria.
6. Fill in the blank(s):
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The reactants for cellular respiration, glucose and oxygen, are the products formed in the process of
____________________.
7. The products of cellular respiration are the reactants of photosynthesis.
a. TRUE
b. FALSE
8. The worldwide exchange of carbon dioxide and oxygen during photosynthesis and cellular respiration helps
to keep these gases at what level in the atmosphere?
a.
b.
c.
d.
Unsafe levels
Stable levels
Higher than predicted levels
Levels that are unpredictable
9. The products of photosynthesis are the reactants of cellular respiration.
a. TRUE
b. FALSE
10. Select all possible answers:
What happens during photosynthesis?
a. Light energy is converted into chemical energy in the form of glucose.
b. The energy stored in glucose is converted into ATP.
c. Photosynthesis produces glucose and oxygen.
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Answer Keys
1. glucose
2. TRUE
3.
6C O2 + 6H2 O → C6 H12 O6 + 6O2
4. Carbon dioxide levels would increase
5. Light energy is used to make ATP.
6. photosynthesis
7. TRUE
8. Stable levels
9. TRUE
10. Light energy is converted into chemical energy in the form of glucose. , Photosynthesis produces glucose
and oxygen.
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