Final answer:
Photosynthesis and cellular respiration both occur in organelles with double membranes and use a version of the cytochrome complex.
Step-by-step explanation:
One of the characteristics that photosynthesis and cellular respiration have in common is that both processes occur in organelles with double membranes and use a version of the cytochrome complex.
In photosynthesis, the process takes place in the chloroplast, which has a double membrane structure. The cytochrome complex is involved in electron transport during both photosynthesis and cellular respiration.