- ____ are stored by the body as energy reserves.
Lipids
Carbohydrates
Proteins
Nucleic acids
- Structural parts of the body such as skin and hair are made of ____.
lipids
carbohydrates
proteins
nucleic acids
- ____ are groups of similar cells that do the same sort of work.
Tissues
Elements
Compounds
Molecules
Carbohydrates
Proteins
Nucleic acids
carbohydrates
proteins
nucleic acids
Elements
Compounds
Molecules