Question

Matter and Energy Online Practice
Complete this assessment to review what you’ve learned. It will not count toward your grade.
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Question
Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the radioactive hydrogen during cellular respiration?(1 point)
Responses

It was recycled into hydrogen gas.
It was recycled into hydrogen gas.

It was recycled into glucose.
It was recycled into glucose.

It was recycled into water.
It was recycled into water.

It was recycled into protein.

Answer 1

During cellular respiration, the radioactive hydrogen that was incorporated into the water taken up by the plants does not get recycled into hydrogen gas, glucose, or protein. Instead, it primarily remains in the form of water by the end of the respiration process.

Therefore, the most accurate response to the question is:

**It was recycled into water.**