Whereas bacteria only have a single chromosome, eukaryotic species have at least one pair of chromosomes. Most have more than one pair. Another relevant point is that eukaryotic chromosomes are detected only occur during cell division and not during all stages of the cell cycle.
How does it work? In very basic terms, your absorption RV refrigerator works like this. It uses heat, and a combination of ammonia, hydrogen gas, and water. These chemicals react and go through various tubes, and the evaporation and condensation process of these chemicals are what cools the refrigerator. These are basic laws of physics.
Pull the refrigerator out of the RV cabinet space. It is easier to remove the refrigerator if you have another person access the back of the refrigerator from the exterior access panel and push, while you pull. Install an RV refrigerator by following the directions in reverse.