Question

Which number remains unchanged during photosynthesis?(1 point)
Responses

the number of carbon atoms
the number of carbon atoms

the number of glucose molecules
the number of glucose molecules

the number of water molecules
the number of water molecules

the number of carbon dioxide molecules
the number of carbon dioxide molecules

Answer 1

The number that remains unchanged during photosynthesis is **the number of glucose molecules**.

This is because photosynthesis produces glucose molecules from carbon dioxide and water, and while the individual molecules of carbon dioxide and water are used in the process, the overall output is a fixed amount of glucose based on the inputs. Thus, while carbon dioxide and water molecules may change in number, the amount of glucose produced is consistently related to the fixed stoichiometry of the photosynthesis equation.