Actually, macromolecules contain Carbon, Hydrogen, and Oxygen
Carbon.
DNA
proteins
proteins
RNA
DNA
Nucleic Acids
lupids
lipids
Lettuce itself is not a macromolecule. However, it contains cellulose which is a type of complex carbohydrate. For reference, there are four types of macromolecules, carbohydrates, lipids, proteins, and nucleic acids.
Lipids store more energy per gram than carbohydrates or proteins.
A nucleotide contains the elements carbon, nitrogen, hydrogen, oxygen and phosphorus.
Ur Welcome ;)Lipids are composed of three fatty acid chains linked to a glycerol backbone