Answer:
Complex organic food molecules such as sugars, fats, and proteins are rich sources of energy for cells because much of the energy used to form these molecules is literally stored within the chemical bonds that hold them together.
Exoskeleton!!!! Tell me if it helps!!!
Answer:
Conducting an experiment.
1.Nucleic acids:Stores and transfers info
2.Carbohydrates:Store energy, provide fuel, and build structure in body, main source of energy, structure of plant cell wall
3.Lipid:Insulator and stores fat and energy
4.Protein:Provide structural support, transport, enzymes, movement, defense
Answer:
combustible ....................