Which of the following is a true statement about triglycerides?

Triglycerides are indeed a form of stored energy in the body. They consist of three fatty acid molecules bonded to a glycerol backbone, making them an efficient way for the body to store energy. When energy is needed, triglycerides can be broken down into fatty acids and glycerol, which can then be utilized in cellular respiration to produce ATP, the energy currency of the cell. This characteristic makes them a critical component in energy metabolism, particularly during periods of fasting or prolonged physical activity when quick energy sources are required.

The other statements do not accurately describe triglycerides. They are not made of proteins and carbohydrates, as they are strictly lipids. Triglycerides are not found in cell membranes; instead, phospholipids are the primary lipids that form cell membranes, contributing to their fluidity and structural integrity. Finally, triglycerides are not involved in genetic information storage; that role is primarily fulfilled by nucleic acids such as DNA and RNA.