1. How do plants recycle carbon during photosynthesis?(1 point)
Responses
The carbon in carbon dioxide is recycled during photosynthesis.
The carbon in carbon dioxide is recycled during photosynthesis.
The carbon in oxygen molecules is recycled during photosynthesis.
The carbon in oxygen molecules is recycled during photosynthesis.
The carbon in glucose is recycled during photosynthesis.
The carbon in glucose is recycled during photosynthesis.
The carbon in water is recycled during photosynthesis.
2. How do plants recycle hydrogen during cellular respiration?(1 point)
Responses
The hydrogen in hydrogen gas is recycled when glucose is formed.
The hydrogen in hydrogen gas is recycled when glucose is formed.
The hydrogen in glucose is recycled when water is formed.
The hydrogen in glucose is recycled when water is formed.
The hydrogen in glucose is recycled when hydrogen gas is formed.
The hydrogen in glucose is recycled when hydrogen gas is formed.
The hydrogen in water is recycled when glucose is formed.
3. How many molecules of water are recycled when one molecule of glucose is created during photosynthesis?(1 point)
Responses
6
12
1
3
4. 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 light energy was formed.
It was recycled when light energy was formed.
It was recycled when water was formed.
It was recycled when water was formed.
It was recycled when glucose was formed.
It was recycled when glucose was formed.
It was recycled when hydrogen gas was formed.
3 answers
2. The hydrogen in water is recycled when glucose is formed.
3. 6 molecules of water are recycled when one molecule of glucose is created during photosynthesis.
4. The radioactive hydrogen was recycled when water was formed.
56 answers