BIOL 1500 Lecture Notes - Chromatin Remodeling, Tata Box, Regulatory Sequence

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Prokaryotic cells undergo rapid and reversible alterations in biochemical pathways that allow them to adapt quickly to changes in their environment. Sugars might be more available in the water environment, and genes to coding for enzymes needed to metabolize this energy source need to be turned on . The amino acid tryptophan) may also be available in water. So genes coding for the enzyme needed to make the amino acid from scratch need to be turned off . Bacteria has a versatile and responsive control system allowing it to be efficient when using nutrients. Gene expression in prokaryotes is regulated at the transcription level with genes organized into functional units called operons. Operon function coordinates synthesis of proteins with related functions. Coordinated synthesis of proteins with related function occurs, but the genes are scattered around genomes (not organized into operons) Individual eukaryotic genes also consist of protein-coding sequences and adjacent regulatory sequences.

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