Final answer:
The correct classification matches lipids (3), nucleic acids (4), polysaccharides (2), and proteins (1), which represent essential macromolecules each with distinctive roles in biological systems.
Step-by-step explanation:
Classification of Macromolecules
Each of the descriptions provided by the student corresponds to a specific type of macromolecule found in living organisms. The correct match is: lipids (3), nucleic acids (4), polysaccharides (2), and proteins (1).
Lipids are nonpolar, hydrophobic molecules, including fats, oils, waxes, phospholipids, and steroids. They are involved in long-term energy storage and form biological membranes. Nucleic acids, which include DNA and RNA, are composed of nucleotides and are responsible for storing and transmitting genetic information.
Polysaccharides, such as starch and glycogen, are carbohydrates made up of monosaccharides and serve as energy sources and structural components. Lastly, proteins are polymers of amino acids and are crucial for various biological functions, including catalysis, transport, and structure.
Descriptions that match lipids include: nonpolar, hydrophobic, fats, oils, waxes, phospholipids, and steroids. Nucleic acids are composed of DNA and RNA, while polysaccharides are large carbohydrates made up of multiple sugar units. Proteins are polymers of amino acids and can have various functions in the body.