Respuesta :
Answer:
A. They all contain carbon.
Explanation:
CHO,CHO,CHON, CHONP
carbohydrates- Carbon,Hydrogen, Oxygen 1:2:1
Lipids- Carbon, Hydrogen, and Oxygen
Protein- Carbon, Hydrogen, Oxygen and nitrogen
Nucleic Acid- Carbon, Hydrogen, Oxygen, nitrogen, and phosphorous