Li Ming thinks that chlorophyll is a reactant of photosynthesis, but her classmate Julian disagrees. Who is correct, and why?
Answer
L
Li Ming is correct because chlorophyll is a substance that is present before the chemical reaction of photosynthesis takes place.
L
Li Ming is correct because chlorophyll is a substance that is formed from the chemical reaction of photosynthesis.
J
Julian is correct because chlorophyll is a product, not a reactant, of photosynthesis.
J
Julian is correct because chlorophyll is neither used up nor formed in the chemical reaction of photosynthesis.
Explanation
A reactant is consumed in a chemical reaction, while a product is formed. Chlorophyll absorbs light energy to help drive photosynthesis, but it is not used up or produced by the reaction. Therefore Julian is correct: chlorophyll is neither used up nor formed during photosynthesis.
AI-written and checked against the verified answer.