One name that jumps out from the list above: Philip Morris Companies Inc, one of the world's largest manufacturers of cigarettes and tobacco products. Philipmorris.com states: The Philip Morris name has long been associated with high quality tobacco products and globally recognized cigarette brands.
A type of gene expression control in bacteria. Transcription of a gene under this type of control is induced only when a repressor protein present in the cell is inactivated.
Students should be able to explain that this process is controlled by transcription facÂ­tors, proteins that activate and repress the expression of genes. Differential gene expression occurs during developÂ­ment of a cell as it differentiates into an adult cell, and in response to physiological events.87CEll dIffEREnTIATIOn And gEnE ExPREssIOn â¢ ACTIVITY 17 5. â Student answers will vary depending on their cell types. One possible response follows. Gene expression causes the cell to only make the types and amounts of proteins the cell needs.