National League For Nursing (NLN) Science Practice Exam

The primary products of gene expression are proteins. Gene expression refers to the process by which the information encoded in a gene is used to produce a functional product, typically a protein. This process involves two main steps: transcription and translation. During transcription, the DNA sequence of a gene is transcribed into messenger RNA (mRNA). Subsequently, during translation, the mRNA is read by ribosomes to synthesize polypeptide chains, which fold into functional proteins. Proteins serve a wide range of essential functions in the body, including structural roles, enzyme activity, signaling, immune responses, and much more. While other molecules such as carbohydrates, lipids, and nucleic acids are also critical for cellular function and structure, they are not the primary products directly synthesized through gene expression. Instead, they may play roles in metabolism or cellular architecture but are not produced as a direct outcome of the transcription and translation processes governed by genes.