Final answer:
Saturated fats have no double bonds between carbon atoms, as they are fully saturated with hydrogen atoms due to single bonds in their hydrocarbon chains.
Step-by-step explanation:
Saturated fats do not contain any double bonds between carbon atoms within their hydrocarbon chains. In contrast, unsaturated fats contain one or more double bonds, which can be in cis or trans configurations, affecting the overall shape and properties of the molecule. Saturated fatty acids are said to be saturated with hydrogen because they have the maximum number of hydrogen atoms bound to the carbon skeleton, due to the presence of single bonds only.