* Genetic blueprint: DNA holds the instructions for building and maintaining an organism. It's like a recipe book containing the recipes for all the proteins a cell needs.
* Genes: DNA is organized into units called genes. Each gene provides instructions for making a specific protein.
* Protein synthesis: Genes are transcribed into RNA (ribonucleic acid), which then serves as a template for protein synthesis. Proteins are the workhorses of the cell, carrying out a vast array of functions, from structural support to enzymatic activity.
In summary:
1. DNA contains the genetic code.
2. Genes within DNA provide instructions for protein synthesis.
3. Proteins are essential for all cell functions.
Therefore, DNA is the ultimate code that guides all cell activity.
