Cellular Respiration vs. Photosynthesis

Cellular Respiration
C6H12O6 + 6 O2 —> 6 CO2 + 6 H2O + Energy

Photosynthesis
6 CO2 + 6 H2O + Energy 
—> C6H12O6 + 6 O2


Basics
Cellular Respiration and Photosynthesis are opposite but complementary biochemical reactions.

Cellular Respiration uses oxygen for animals to live and releases the carbon dioxide that plants need to live.

Photosynthesis uses carbon dioxide for plants to live and releases the oxygen that animals need to live.


Biochemical Reactions
Cellular Respiration
C6H12O6 + 6 O2 —> 6 CO2 + 6 H2O + Energy

Photosynthesis
6 CO2 + 6 H2O + Energy —> C6H12O6 + 6 O2


Practice – Questions
C6H12O6 + 6 O2 —> 6 CO2 + 6 H2O + Energy
1.  What is the name of the above biochemical reaction?
A.  marathon
B.  pikermi
C.  photosynthesis
D.  cellular respiration

6 CO2 + 6 H2O + Energy —> C6H12O6 + 6 O2
2.  What is the name of the above biochemical reaction?
A.  marathon
B.  pikermi
C.  photosynthesis
D.  cellular respiration

3.  In photosynthesis and cellular respiration, how many molecules of glucose are involved in each reaction?
A.  6
B.  12
C.  18
D.  1

4.  In photosynthesis and cellular respiration, how many molecules of oxygen are involved in each reaction?
A.  6
B.  12
C.  18
D.  1

5.  In photosynthesis and cellular respiration, how many molecules of nitrogen are involved in each reaction?
A.  6
B.  12
C.  1
D.  none of the above


Practice – Answers
1.  D.  cellular respiration

2.  C.  photosynthesis

3.  D.  1

4.  A.  6

5.  D.  none of the above

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