Question

Why are photosynthesis and respiration considered opposites?

A) Photosynthesis absorbs oxygen, while cellular respiration releases oxygen.
B) Both photosynthesis and cellular respiration absorb carbon dioxide.
C) Photosynthesis absorbs carbon dioxide, while cellular respiration releases carbon dioxide.
D) Both photosynthesis and cellular respiration absorb oxygen.

Answer 1

Photosynthesis and cellular respiration are considered opposites because they have opposite inputs and outputs. Photosynthesis absorbs carbon dioxide and releases oxygen, while cellular respiration absorbs oxygen and releases carbon dioxide.

Step-by-step explanation:

Photosynthesis and cellular respiration are considered opposites because they have opposite inputs and outputs. Photosynthesis absorbs carbon dioxide and releases oxygen, while cellular respiration absorbs oxygen and releases carbon dioxide. This is shown in the equation for photosynthesis: 6CO2 + 6H2O + sunlight -> C6H12O6 + 6O2, and the equation for cellular respiration: C6H12O6 + 6O2 -> 6CO2 + 6H2O + ATP. These two processes are complementary and play important roles in the carbon cycle.