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What prevents e coli from expressing the lac genes in its DNA all of the time?
Wiki User
∙ 10y ago
whenever the Lactose is present the lac genes in E.coli are turn on
Wiki User
∙ 12y ago
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Can E. coli live at 100 degrees celsius for a short period of time?
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.
What is a change in genes of a population over time?
That is the definition of evolution.
Two genes that are one map unit apart are separated by crossing-over by what percent?
50% of the time
What is the requered contact time for chlorine to kill E. coli?
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
Can Ecoli be both good and bad?
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.
How was a bacteria first used to copy gene?
Researchers put genes from a frog into the bacterium Escherichia Coli.
Are all of organism's genes turned on at the same time?
No. Only certain genes are active at the same time. When they are not active, they are turned off.
Phrases expressing period of time?
"For what seemed like an eternity"
Will time of puberty depend on the parent's genes?
No.
Can E. coli live at 100 degrees celsius for a short period of time?
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.
What is the thermal death time for e-coli and b subtilis?
e.coli is 55°C for 60 min
What kingdom includes giant kelp but not E coli?
Include the answer choices next time idiot. Hahaha
When does anger become hate?
When it is held inside for a long time without expressing feelings.
What is a change in genes of a population over time?
That is the definition of evolution.
What is used as evidentiary support for evolution by scientists?
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.
How long does E. coli Bacteria live outside of the body Specifically on shoes?
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.
What would be the most practical unit to use for expressing the time it takes to blink?
Hundredths of a second.
