Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the radioactive hydrogen during photosynthesis?(1 point) Responses It was recycled when glucose was formed. It was recycled when glucose was formed. It was recycled when water was formed. It was recycled when water was formed. It was recycled when light energy was formed. It was recycled when light energy was formed. It was recycled when hydrogen gas was formed.

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The correct response is: It was recycled when glucose was formed.

During photosynthesis, plants take in carbon dioxide and water, and using light energy, they convert these into glucose and oxygen. The hydrogen from the radioactive water is incorporated into the glucose molecule. Thus, the radioactive hydrogen is effectively recycled during the process of forming glucose.