How Did the Scientists Rule Out That the Chloroplasts Could

Multiple Choice

How did the scientists rule out that the chloroplasts could function outside of a host cell?

A) They shined light on the chloroplasts and looked for oxygen production.
B) They found the algal photosystem II psbO gene in the sea slug chromosomes.
C) They injected the chloroplasts into a heterotrophic bacteria and it could now perform photosynthesis.
D) The chloroplast chromosomes were missing photosystem II gene psbO.
E) They did not find the photosystem II psbO gene in the puffer fish chromosomes.