Question

Which substances help the body store energy for a longer duration?
Responses

Carbohydrates. They can form large and complex molecules.
Carbohydrates. They can form large and complex molecules.

Vitamins. They take a longer time for the body to digest.
Vitamins. They take a longer time for the body to digest.

Lipids. They have more carbon-hydrogen bonds than other biomolecules.
Lipids. They have more carbon-hydrogen bonds than other biomolecules.

Proteins. They make up most of the parts of the body.
Proteins. They make up most of the parts of the body.

Answer 1

Lipids. They contain many carbon–hydrogen bonds and are energy‑dense ( ≈9 kcal/g), so fats (triglycerides) are stored in adipose tissue for long‑term energy. Carbohydrates (glycogen) are for short‑term storage, proteins are mainly structural/functional (used for energy only as needed), and vitamins do not store usable energy.