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?

Pls quickly! which of the following is true about the behavior of an organism? a. the behavior of an organism is influenced by both its heredity and it’s environment. b. the behavior of an organism is influenced only by the treats it inherits from its parents. c. the behavior of an organism is influenced only by the environment in which it lives in. d. the behavior of an organism is not influenced by either it’s heredity or its environment.

1. describe the structure and function of the specialized cells you observed in the video. 2. research the types of cells present in the kidney.

Which of the following is a testable hypotheses?