State tryptophan in the environment was exhausted

Reference no: EM13175424

A certain bacterium that is a tryptophan auxotroph was observed to grwo well when it was supplied with tryptophan, but as soon as the tryptophan in the environment was exhausted, the bacteria started to excrete a metabolite on the tryptophan biosynthetic pathway. why didnt the bacteria excrete the metabolite before exhausting the environmental tryptophan?

Reference no: EM13175424

Questions Cloud

Pare and contrast continuous spectrum and line spectrum : Compare and contrast continuous spectrum and line spectrum as they relate to the elements. Describe how spectral lines can be used to identify elements.

State water to prouce a solution that boils : What mass of MgCl2 in grams must be added to 1.00 kg of water to prouce a solution that boils at 103.0 degrees celsius

What is the federal reserve system : Explain in detail. Who are the past and present charimen. Why was the current chairman in the news recently and what did he propose?

What is relationship between light intensity and distance : The efficiency of light source = energy of visible light/ total energy 7. What is the relationship between light intensity and distance from the source?

State tryptophan in the environment was exhausted : tryptophan in the environment was exhausted, the bacteria started to excrete a metabolite on the tryptophan biosynthetic pathway. why didnt the bacteria excrete the metabolite before exhausting the environmental tryptophan?

Why is a large steroid molecule able to cross cell membrane : Why is a large steroid molecule able to cross the cell membrane when a small molecule cannot?

State the citric acid in grapefruit burns : ocat standing in front of a blackboard covered with molecular formulas proceeds to explain how it is the citric acid in grapefruit burns up the fat.

Explain four vital functions of money : Give real world examples of each of them. How would you construct an argument around the comment "more money you have the more problems you have".

Which species would react fastest with electrophiles : Which species would react fastest with electrophiles? How are enolate ions prepared? How are enolate ions prepared? Are enolate ions formed when a weaker base is used?

User Account

All Pages