Question

Which relationship is different? monosaccharide / polysaccharide phospholipid / lipids amino acid / protein nucleotide / nucleic acid?

Answer 1

The different relationship is amino acid/protein. Amino acids are the monomers that makeup proteins.

Step-by-step explanation:

The different relationship is amino acid/protein. Amino acids are the monomers that makeup proteins. When amino acids combine through a process called dehydration synthesis, they form a covalent bond and create a protein. In contrast, the other options in the question are examples of monomers (such as monosaccharides, phospholipids, and nucleotides) that combine to form polymers (such as polysaccharides, lipids, and nucleic acids).

Answer 2

The correct answer is phospholipid / lipids.

All of the pairs represent the combination of macromolecules with their basic units.

In the case of lipids, basic building blocks are free fatty acids, not phospholipids. Phospholipids are a class of lipids composed of two hydrophobic fatty acid "tails" and a hydrophilic "head" consisting of a phosphate group which are joined together by a glycerol molecule.