Final answer:
Monounsaturated fats are the fats containing fatty acids with only one double bond, which allows them to be liquid at room temperature and not pack tightly together.
Step-by-step explanation:
The fats that contain fatty acids with a maximum of one double bond are monounsaturated fats. Monounsaturated fats are the fats containing fatty acids with only one double bond, which allows them to be liquid at room temperature and not pack tightly together.
These fats have only one double bond in their fatty acid chains, which creates a kink at that bond preventing tight packing, and makes them liquid at room temperature.
Examples of monounsaturated fats include olive oil and certain other plant oils. This distinguishes them from saturated fats, which have no double bonds, and polyunsaturated fats, which have two or more double bonds.