Final answer:
The statement is false because not all DNA sequences code for proteins. Some code for RNA molecules, while others serve regulatory roles in gene expression. Protein synthesis is a selective process that varies between cell types.
Step-by-step explanation:
The statement "All functional DNA sequences inside a cell code for protein products" is false. Not all DNA sequences are used to make proteins; some DNA sequences code for RNA molecules, which play various roles in the cell but do not translate into proteins. Furthermore, within an organism's genome, there are regions of non-coding DNA that provide regulatory functions, such as promoters and enhancers, which play crucial roles in the expression of genes but do not encode proteins themselves.
In each cell, different sets of genes are expressed, meaning that only certain genes are turned on and translated into proteins based on the cell's function and type. The process by which DNA is used to produce proteins is called gene expression, which is a tightly regulated process ensuring that only the proteins necessary for a cell's specific functions are synthesized. Protein synthesis involves the transcription of DNA into mRNA and the translation of mRNA into an amino acid sequence, forming a functional protein.