Question

multiple choice question
if chloroplasts are isolated from a plant and exposed to light in the absence of carbon dioxide, they accumulate

oxygen
atp
glucose
adp

Explanation:

Chloroplasts in the light - dependent reactions of photosynthesis can produce oxygen and ATP without carbon dioxide. The light - dependent reactions split water molecules to release oxygen and use the energy from light to generate ATP from ADP and inorganic phosphate. Glucose is produced in the light - independent reactions (Calvin cycle) which require carbon dioxide. Since the chloroplasts are exposed to light, the light - dependent reactions will occur and oxygen and ATP will be produced. But oxygen is a by - product and diffuses out, while ATP accumulates as there is no carbon dioxide for the Calvin cycle to consume it.

Answer:

ATP