How do plants recycle carbon during photosynthesis?(1 point)

Responses

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 carbon dioxide is recycled during photosynthesis.
The carbon in carbon dioxide is recycled during photosynthesis.

The carbon in water is recycled during photosynthesis.

7 answers

The carbon in carbon dioxide is recycled during photosynthesis.

During photosynthesis, plants take in carbon dioxide (CO2) from the atmosphere and, through a series of chemical reactions, convert it into glucose (C6H12O6) while also releasing oxygen as a byproduct.

How do plants recycle hydrogen during cellular respiration?(1 point)
Responses

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 glucose is recycled when water is formed.
The hydrogen in glucose is recycled when water is formed.

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 water is recycled when glucose is formed.

The hydrogen in glucose is recycled when water is formed.

During cellular respiration, glucose is broken down to release energy, and one of the byproducts of this process is water (H2O). The hydrogen atoms from glucose combine with oxygen to form water, effectively recycling the hydrogen during the process.

How many molecules of water are recycled when one molecule of glucose is created during photosynthesis?(1 point)
Responses

6
6

3
3

12
12

1

6

During photosynthesis, one molecule of glucose (C6H12O6) is produced from six molecules of carbon dioxide (CO2) and six molecules of water (H2O). Therefore, 6 molecules of water are used and recycled in the process.

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 hydrogen gas was formed.
It was recycled when hydrogen gas was formed.

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.

In the process of photosynthesis, the hydrogen from the water (which contains the radioactive hydrogen) is incorporated into glucose molecules. Therefore, the radioactive hydrogen is effectively recycled when glucose is formed.