These organic molecules are used by the body for long term storage of energy and make up the structure of cell membrones. Carbohydrates Liplels Proteins Nucleic Acids

The correct answer is Lipids.<br /><br />Lipids are a class of organic molecules that are used by the body for long-term storage of energy. They are also a major component of the structure of cell membranes.<br /><br />Carbohydrates, on the other hand, are primarily used by the body as a source of short-term energy. They are not the main component of cell membranes.<br /><br />Nucleic acids, such as DNA and RNA, are the genetic material that carries the instructions for the synthesis of proteins and other important molecules in the body. They are not used for energy storage or as a structural component of cell membranes.<br /><br />Therefore, the correct answer is Lipids.