Which molecule is incorrectly matched with its monomer?
a. nucleic acids; nucleotide
b. protein; amino acid
c. starch; lipid

The answer to your question is c, starch; lipid.

Explanation:

a. nucleic acids; nucleotide  This answer is not right because nucleic acids are composed by nucleotides then nucleotides are the monomers of nucleic acids.

b. protein; amino acid . This question is not right because proteins are composed by aminoacids that means that aminoacids are monomers of proteins.

c. starch; lipid. This question is right because starch is composed by monosaccharides so monosaccharides are monomers of starch not lipids.

the way that the mass of carbon can be conserved through cellular respiration is through a process/law called the law of conservation of mass which even tho it undergoes a process, mass is not be destroyed or changed