Question

identify the following diagrams as a carbohydrate, protein, lipid or nucleic acid. 4 5. 6. saturated fatty acid carbohydrate protein nucleic acid lipid

Explanation:

• For diagram 4: Proteins are made of amino acids. The given structure has an amino group ($-NH_2$), a carboxyl group ($-COOH$), and a side chain (here $-CH_2SH$), which are characteristic of an amino acid, the building block of proteins.
• For diagram 5: Nucleic acids (like DNA and RNA) are composed of nucleotides. A nucleotide has a nitrogen - containing base, a pentose sugar, and a phosphate group. The diagram shows a structure with these components (base, sugar, phosphate).
• For diagram 6: Lipids include fatty acids. A saturated fatty acid has a long hydrocarbon chain with no double bonds (as shown in the structure) and a carboxyl group at the end, which is a characteristic of lipids.

Answer:

1. Protein
2. Nucleic acid
3. Lipid