LIFE SCIENCE

Detailed explanation-1: -If the body already has enough energy to support its functions, the excess glucose is stored as glycogen (the majority of which is stored in the muscle and liver).

Detailed explanation-2: -So, the correct answer is Lipids.

Detailed explanation-3: -Answer and Explanation: Carbohydrates and lipids are able to store energy in their bonds. This energy can be accessed by cells by breaking these bonds and using the electrons in these bonds to generate a proton gradient in the mitochondria which will be used to generate ATP molecules by oxidative phosphorylation.

Detailed explanation-4: -The main biological functions of lipids include storing energy, as lipids may be broken down to yield large amounts of energy. Lipids also form the structural components of cell membranes, and form various messengers and signaling molecules within the body.