Using the Lac operon as an example, explain how genes are activated (turned on). What occurs when genes are activated? Please make sure to use the following words
in your proteins, operator, repressor, lactose, e coli, lactose intolerance,
enzymes, lactase, dairy products.

Which statement correctly describes other ways in which nebulae and stars are different? a. a star always has a higher density than a nebula. b. stars can form inside a nebula but a nebula can never be produced by any star. c. stars can never form inside a nebula but a nebula can be produced by any star. d. a nebula always has a higher density than a star. reset submit