Define in detail why these bacteria don''t begin to excrete

Reference no: EM13172266

It is possible to isolate mutant bacteria that are phenylalanine auxotrophs, that is they require phenylalanine in the medium in order to grow: non-mutant bacteria, of course, are able to synthesize their own phenylalanine via the shikimate pathway. A phenylalanine auxotroph (with one mutation in the shikimate pathway) is able to grow well in the presence of phenylalanine, but as soon as the added phenylalanine is used up, these bacteria stop growing and begin to excrete a metabolite of the shikimate pathway. Explain in detail why these bacteria don't begin to excrete this metabolite before using up the phenylalanine in the medium.

Reference no: EM13172266

Questions Cloud

State the column required for the best purification : Give the steps to prepare the column required for the best purification of 0.40g of crude product using silica

Compute the rate of water removal from the condenser : Calculate the rate of water removal from the condenser, the rate of dehumidified (1.50% water) air delivered to the house, and the flow rate and composition of the humid air entering the condenser

State what is the approximate ph at the equivalence point : What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous formic acid requires

State decreased to one-third of its original pressure : The pressure of 4.57 L of an ideal gas in a flexible continer is decreased to one-third of its original pressure, and its kelvin temperature is decreased by one half

Define in detail why these bacteria don''t begin to excrete : Explain in detail why these bacteria don't begin to excrete this metabolite before using up the phenylalanine in the medium.

State what are the units of the rate constant k : the reaction was found to be first order both with rspect to NO and O3 (expressing concentrations as molarity) What are the units of the rate constant K for this reaction?

State sodium peroxide used to remove carbon dioxide : Sodium peroxide used to remove carbon dioxide from the air supply in space crafts. it works by reacting with the co2 in the air to produce sodium carbonate and O2.

State and draw the major form of your drug whenph : draw the major form of your drug whenph is low (acidic medium) for all acid base groups c. draw the major form of drug when ph is high (basic medium for all acid base groups

State and draw the molecular orbitals for each geometry : Determine the point group of each of the three possible geometries of the hypothetical Be3+ on, ten draw the molecular orbitals for each geometry,

User Account

All Pages