What are the three main functions of DNA?

What are the three main functions of DNA?

• A. Provides energy; 2) Catalyzes reactions; 3) Moves the cell.
• B. Stores lipids; 2) Transports proteins; 3) Forms membranes.
• C. Provides genetic instructions for making proteins. 2) Allows for cellular replication. 3) Dictates the development and functioning of the organism.
• D. Sequence for carbohydrate synthesis; 2) Guide for ATP production; 3) Serves as a structural component.

Answer: (C)

The main idea being tested is what DNA does in cells: it stores hereditary information, provides instructions to make proteins, and guides the development and functioning of the organism, while also being replicated to pass on genetic material during cell division. DNA’s sequence holds genes that, through transcription and translation, direct the production of proteins that carry out most cellular tasks. Regulation of which genes are expressed and when shapes growth, development, and physiology. Replication ensures that genetic material is copied and inherited by daughter cells. The other options mix in roles handled by other molecules and structures—energy production, metabolism, membranes, and transport—not DNA.

The main idea being tested is what DNA does in cells: it stores hereditary information, provides instructions to make proteins, and guides the development and functioning of the organism, while also being replicated to pass on genetic material during cell division. DNA’s sequence holds genes that, through transcription and translation, direct the production of proteins that carry out most cellular tasks. Regulation of which genes are expressed and when shapes growth, development, and physiology. Replication ensures that genetic material is copied and inherited by daughter cells. The other options mix in roles handled by other molecules and structures—energy production, metabolism, membranes, and transport—not DNA.