A mutation of a sigma factor in a bacterium would most likely affect a. the rate at which translation occurs. b. the frequency of errors in transcription. c. the types of modifications done to RNA during processing. d. the rate at which transcription elongation occurs. e. the rate at which transcription is initiate .

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.

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems

What are the two functions of the respiratory system