What is the structural difference between a polyunsaturated fat and a saturated fat? a. there are double bonds present in the fatty acid chains of a polyunsaturated fat but none in a saturated fat. b. polyunsaturated fats are in the ring form, while saturated fats are linear. c. the saturated fat is a liquid at room temperature, while the polyunsaturated fat is a solid at room temperature. d. there are multiple fatty acids chains on the polyunsaturated fat, while there is only one on the saturated fat.