Florida Biology EOC Practice Test

What are proteins made of?

1. Amino acids

2. Carbohydrates

3. Fatty acids

4. Nucleic acids

The correct answer is: Amino acids

Proteins are indeed made of amino acids, which are organic compounds that serve as the building blocks for proteins. Each protein is composed of one or more chains of amino acids that are linked together by peptide bonds. The sequence of amino acids in a protein determines its unique structure and function, making them crucial for a wide variety of biological processes, including enzyme activity, cellular signaling, and structural roles within cells. The other options represent different types of biological macromolecules. Carbohydrates are composed of sugar molecules and primarily provide energy and structural support in living organisms. Fatty acids are the building blocks of lipids, which include fats and oils, and are primarily involved in energy storage and membrane structure. Nucleic acids, such as DNA and RNA, are made up of nucleotides and are responsible for the storage and transmission of genetic information. Understanding these distinctions helps clarify the unique role that amino acids play in forming proteins.