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 hydrogen gas was formed.
It was recycled when hydrogen gas was formed.
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.
None of the above responses are accurate.
During photosynthesis, plants use sunlight energy to combine carbon dioxide and water to produce glucose and oxygen. The radioactive hydrogen that was present in the water would be incorporated into the glucose molecules formed during photosynthesis. It would not be recycled into hydrogen gas, water, or light energy.
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 hydrogen gas was formed.
It was recycled when hydrogen gas was formed.
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.
The correct response is: It was recycled when glucose was formed.
The correct answer is: "It was recycled when water was formed."
During the process of photosynthesis, plants use energy from sunlight to convert carbon dioxide and water into glucose (a simple sugar) and oxygen. In this process, the hydrogen from the water is incorporated into the glucose molecules. The radioactive hydrogen, along with non-radioactive hydrogen, is utilized to form water molecules during photosynthesis. Therefore, the radioactive hydrogen is recycled and becomes part of the water that is produced during photosynthesis.