Which term describes the process by which information in biological systems is stored, transmitted, and used?

• A. Stored, transmitted, and used
• B. Data management
• C. Signal transduction
• D. Information flow

Answer: (D)

Information flow captures how biology handles information at all levels: how genetic material and epigenetic marks store information, how signals and heredity transmit it between cells and generations, and how cells use that information to regulate gene expression and produce appropriate responses. This framing includes storage in DNA and chromatin, transmission through inheritance and intercellular signaling, and usage in transcription, translation, and regulatory networks that shape phenotype. It’s broader than signaling pathways alone, which focus on passing a signal inside a cell, and broader than human data-management ideas that don’t describe living systems.