Biology, 21.04.2020 22:40, mzrereday3151
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, 22.06.2019 02:00, paiged55
Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi, r^3 , where r is the sphere’s radius.
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Biology, 22.06.2019 08:00, kseniyayakimov
Explain why biological control methods are generally environmentally superior to chemical pest control methods.
Answers: 1
E. coli can synthesize the amino acid threonine or absorb it from the environment. In the thr operon...
History, 30.04.2021 18:00