whenever the Lactose is present the lac genes in E.coli are turn on
In the presence of lactose or galactose.
lac repressor
Escherichia coli, also known as E. Coli lives in temperatures of 25 and 40 degrees Celsius. It has been previously tested and found that E.coli can not live at 100 degrees Celsius, but in fact it would hibernate.
That is the definition of evolution.
50% of the time
Chlorine rapidly kills E coli bacteria. At a concentration of 1 part per million (the minimum level recommended for swimming pools), chlorine kills E coli in less than one minute. At 200 parts per million (about one tablespoon of household bleach in a gallon of water) the kill time would be less than a second. See the Centers for Disease Control and Prevention website: http://www.cdc.gov/healthyswimming/chlorine_timetable.htm
Yes. There are certain strains of E. coli that live in your digestional tract all the time and are not harmful to your health. It's abundance and availability have made it a model organism that biologists use to d all sorts of research. However, there are also strains of E. coli that will make you sick if you are exposed to them.
Researchers put genes from a frog into the bacterium Escherichia Coli.
No. Only certain genes are active at the same time. When they are not active, they are turned off.
"For what seemed like an eternity"
No.
Escherichia coli, also known as E. Coli lives in temperatures of 25 and 40 degrees Celsius. It has been previously tested and found that E.coli can not live at 100 degrees Celsius, but in fact it would hibernate.
e.coli is 55°C for 60 min
Include the answer choices next time idiot. Hahaha
When it is held inside for a long time without expressing feelings.
That is the definition of evolution.
Evolution is the change in allele frequency over time in a population of organisms. By sequencing genes one can see this happen. Also just observing the morphological and behavioral changes in populations over time can lead to evidence supporting evolution. Check Lenski and his E. coli experiments. Over 20 years evolution was observed in these microorganisms. Fairly easy Google.
E. coli bacteria can live outside of the body for long durations of time. This is especially true when there are conditions available that allow for these organisms to eat and multiply.
Hundredths of a second.