E. coli can synthesize the amino acid threonine or absorb it from the environment. in the thr operon, the repressor is active when it is bound to threonine. if an
e. coli bacterium is in an environment where threonine is absent, will transcription of threonine synthesis genes take place? why or why not?
Answers: 1
Biology, 21.06.2019 19:30
Mention true or false : a) cholera is marked by acute diarrhea and no urination. b)mosquitoes are the source of dysentery germs.
Answers: 1
Biology, 22.06.2019 03:30
What is the role of the phospholipid belayer in cellular transport in living cells
Answers: 1
Biology, 22.06.2019 06:30
Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide
Answers: 2
Biology, 22.06.2019 09:00
Which statement best describes the role of religion and culture in ancient medicine?
Answers: 1
E. coli can synthesize the amino acid threonine or absorb it from the environment. in the thr operon...
History, 26.05.2020 08:57
Mathematics, 26.05.2020 08:57
Mathematics, 26.05.2020 08:57
English, 26.05.2020 08:57
Biology, 26.05.2020 08:57
History, 26.05.2020 08:57
English, 26.05.2020 08:57
English, 26.05.2020 08:57
Mathematics, 26.05.2020 08:57
Mathematics, 26.05.2020 08:57