Question

if you exposed a photosynthesizing plant to water that contains both radioactive h and radioactive o, in which of the products of photosynthesis will the radioactive h and o show up?
h and o both in glucose
h in glucose; o in water
h in water; o in glucose
h in glucose and water; o in o2
h in glucose and water: o in water and o2

Explanation:

During photosynthesis, water (\(H_2O\)) is split in the light - dependent reactions. The oxygen (\(O\)) from water is released as \(O_2\). The hydrogen (\(H\)) from water is used in the formation of glucose (\(C_6H_{12}O_6\)) during the Calvin cycle (light - independent reactions). Also, some of the hydrogen can remain in water (if not all used up in reactions).

Answer:

H in glucose and water; O in water and O2