What is the purpose of genes in biological systems?

• A. To store energy
• B. To provide structural support
• C. To specify the structure of proteins
• D. To synthesize lipids

Answer: (C)

Genes play a crucial role in biological systems primarily by specifying the structure of proteins. This is achieved through the processes of transcription and translation, where the genetic code contained within DNA is converted into messenger RNA (mRNA), which then guides the synthesis of proteins. Proteins are essential for various cellular functions, including acting as enzymes, hormones, and structural components.

By encoding the specific sequences of amino acids that make up proteins, genes determine the unique structure and function of each protein produced in the cell. This relationship between genes and proteins is fundamental to the regulation of biological processes and the development of organisms. Therefore, the correct answer emphasizes the essential role of genes in directing protein synthesis, which is vital for life.