Which gas is released during photosynthesis?

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Prepare for the Dual Enrollment Physical Science Midterm. Study with flashcards and multiple choice questions, each with hints and explanations. Ace your exam!

Multiple Choice

Which gas is released during photosynthesis?

Explanation:
During photosynthesis, the light-dependent reactions split water to provide electrons for the photosynthetic machinery, and this process releases oxygen gas as a byproduct. The oxygen comes from the water molecules, not from carbon dioxide. Carbon dioxide is used in the later steps to build sugars, so it isn’t released as a gas. Nitrogen gas and methane aren’t produced by this process in plants. In short, the gas released is oxygen.

During photosynthesis, the light-dependent reactions split water to provide electrons for the photosynthetic machinery, and this process releases oxygen gas as a byproduct. The oxygen comes from the water molecules, not from carbon dioxide. Carbon dioxide is used in the later steps to build sugars, so it isn’t released as a gas. Nitrogen gas and methane aren’t produced by this process in plants. In short, the gas released is oxygen.

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