A biologist ground up some plant leaf cells and then centrifuged the mixture to fractionate the organelles. Organelles in one of the heavier fractions could produce ATP in the light,

while organelles in the lighter fraction could produce ATP in the dark. The heavier and

lighter fractions are most likely to contain, respectively,

Chloroplasts (heavy) and Mitochondria (Light)

Explanation

Light dependent reactions of photosynthesis (in chloroplasts) produce ATP only when exposed to light. Mitochondria respirates and produces ATP regardless.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.