During photosynthesis in chloroplasts, O 2 is produced from __________ via a series of reactions associated with __________.

CO 2 ... both photosystem I and the Calvin cycle

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1. Introduction to Biology2h 42m
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9. Photosynthesis

Review of Photosynthesis

General Biology

9. Photosynthesis

Review of Photosynthesis

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Multiple Choice

During photosynthesis in chloroplasts, O₂ is produced from via a series of reactions associated with .

CO₂; photosystem II

CO₂; the Calvin cycle

H₂O; photosystem I

CO₂ ... both photosystem I and the Calvin cycle

H₂O; photosystem II

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Verified step by step guidance

Understand the process of photosynthesis, which occurs in chloroplasts and involves two main stages: the light-dependent reactions and the Calvin cycle.

Recognize that oxygen (O2) production is part of the light-dependent reactions, specifically occurring in the thylakoid membranes of the chloroplasts.

Identify that water (H2O) is the molecule that is split during the light-dependent reactions, releasing oxygen as a byproduct. This process is known as photolysis.

Learn that photosystem II is the complex responsible for the initial step of the light-dependent reactions, where water is split to provide electrons, protons, and oxygen.

Conclude that the correct answer is 'H2O; photosystem II' because photosystem II is directly involved in the splitting of water to produce oxygen during photosynthesis.