Question

a bacterium is excreted from its cow host and dropped into a farm stream. the bacterium must adjust to its carbon-poor environment. which of the following mechanisms would produce the MOST new protein products to be used by the bacterium in this environment? select the best mechanism

phosphorylating a cytoplasmic protein

providing an inducer for operon activator

producing more RNAases

Removal of protiens that blocked mRNA shine-delgarno site

Answer 1

providing an inducer for operon activator

transcriptional activators are protein whichi increase the expression of a group of genes, such as operon regulating together. Presence of carbon poor environment might produce an inducer which could activate the activator protein and regulates the operon, like CAP functioning in lac operon. In presence of low glucole, cAMP will bind to CAP and leads to a confirmation change of CAP and allows it to bind near the lac promotor.