Question

which number remains unchanged during photosynthesis? (1 point)
○ the number of carbon dioxide molecules
○ the number of glucose molecules
○ the number of carbon atoms
○ the number of water molecules

Explanation:

Photosynthesis is a chemical - process. According to the law of conservation of mass, the number of atoms of each element remains the same in a chemical reaction. During photosynthesis, carbon - containing reactants (carbon dioxide) are used to make glucose, and water is also involved. But the number of carbon atoms is conserved throughout the reaction. The number of carbon dioxide, glucose, and water molecules change as they are reactants and products in the reaction.

Answer:

the number of carbon atoms