Carbohydrates ____

Question

Carbohydrates ____.
A) act as energy sources for cells
B) include fats and oils
C) are made of nucleic acids
D) act as protein builders
E) are also called steroids

Accepted Answer

Carbohydrates are a group of macromolecules that mainly act as a source of energy for cells. They are composed of carbon, hydrogen, and oxygen atoms, and can be found in a variety of foods such as fruits, grains, and vegetables. Fats and oils (choice B) are a different group of macromolecules that also provide energy, but they have a different chemical structure than carbohydrates. Nucleic acids (choice C) are the building blocks of DNA and RNA, and are not carbohydrates. Proteins (choice D) are also macromolecules, but they are composed of amino acids and not carbohydrates. Steroids (choice E) are a specific group of lipids, and are not related to carbohydrates.