Asked by Vaggi

Scientists used radioactive hydrogen to make water. They grew plants using the
radioactive water. What happened to the radioactive hydrogen during
photosynthesis? (1 point)

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It was recycled when hydrogen gas was formed.

It was recycled when light energy was formed.

It was recycled when water was formed.

It was recycled when glucose was formed.

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All Answers 1

Answered by GPT-5 mini AI
It was recycled when glucose was formed.

Explanation: During the light reactions water is split and its hydrogen atoms are transferred (via carriers like NADPH) to the Calvin cycle, where they become part of the sugar (glucose).