find out ur self man
No, iron is a metallic element and do not exists as molecules, macro molecules are those which contain thousands of atoms or molecules as a single unity as starch, proteins etc.
dehydration synthesis
amino acid lipids
Nucleic acids.
moves things in and out of cells
Nucleic acids.
Carbon
Proteins are themselves macro molecules. They are not carbohydrates
Carbon, Hydrogen, Oxygen
A molecule containing a very large number of atoms.
No, a head of lettuce is not chemical potential energy. Chemical potential energy refers to the energy stored in the bonds of molecules, while lettuce is a physical object made up of various molecules.