In the photosynthesis equation, which gas is released as a product?

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Multiple Choice

In the photosynthesis equation, which gas is released as a product?

Explanation:
Oxygen is released as a byproduct in photosynthesis. During the light-dependent reactions, water is split (photolysis) in the chloroplasts, producing electrons, protons, and oxygen gas. The overall process uses carbon dioxide and water to build sugars, but the oxygen you see released into the air comes from the water molecules, not from carbon dioxide. The formula often recalled shows oxygen as a product: 6 CO2 + 6 H2O + light energy -> C6H12O6 + 6 O2. The other gases listed—nitrogen, hydrogen, methane—are not produced or released by photosynthesis in plants, so they aren’t products of this process.

Oxygen is released as a byproduct in photosynthesis. During the light-dependent reactions, water is split (photolysis) in the chloroplasts, producing electrons, protons, and oxygen gas. The overall process uses carbon dioxide and water to build sugars, but the oxygen you see released into the air comes from the water molecules, not from carbon dioxide. The formula often recalled shows oxygen as a product: 6 CO2 + 6 H2O + light energy -> C6H12O6 + 6 O2. The other gases listed—nitrogen, hydrogen, methane—are not produced or released by photosynthesis in plants, so they aren’t products of this process.

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