Question

unit 3.1 quiz- due 11/24
3.1-9-12.e.stuart is listing the changes to matter and energy that occur during the process of photosynthesis. which of these examples should
he include in his list?
o nuclear changes that convert hydrogen and oxygen into carbon
o chemical changes that convert carbohydrates into smaller molecules
o changes that convert light energy into chemical energy stored in carbohydrates
o changes that convert chemical energy into heat and light

Explanation:

Photosynthesis is the process by which plants use light energy to convert carbon dioxide and water into glucose (a carbohydrate) and oxygen. During this process, light energy is converted into chemical energy which is stored in the carbohydrates (like glucose) produced. Let's analyze the other options:

• Nuclear changes involve changes in the nucleus of an atom (like fission or fusion) and are not part of photosynthesis, so the first option is incorrect.
• Photosynthesis builds larger carbohydrate molecules from smaller molecules (CO₂ and H₂O), not breaking them down, so the second option (which describes a process like cellular respiration or digestion) is incorrect.
• The last option describes energy being released as heat and light, which is more like combustion or cellular respiration, not photosynthesis.

So the correct example related to photosynthesis is the one about converting light energy into chemical energy stored in carbohydrates.

Answer:

changes that convert light energy into chemical energy stored in carbohydrates