Many mutations have been identified in the lac operon. a particular mutation prevents the repressor protein from binding to the operator under all circumstances. select all conditions which will lead to the operon being "on" with this mutation (for the purposes of these questions, either an extremely low level of expression or completely off are equivalent) mark all that apply

select one or more:
a. - glucose, + lactose correct
b. - glucose, - lactose correct
c. + glucose, - lactose
d. + glucose, + lactose

Dr. kaylan is an ecologist who studies bird behavior. she sets up an experiment to test which type of food crows are most likely to eat when given a choice between walnuts, corn, and sunflower seeds. to perform her experiment, dr. kaylan places three food bins in an area frequented by cows. each bin contains one of the three food types. then, she measures how much of each food type is eaten every day for a month and summarizes the results of her experiment in the pie chart below. based on her results, dr. kaylan concludes that crows choose to eat corn more frequently than other food sources because it has a higher nutritional value. what is a reasonable alternate conclusion that can be drawn from dr. kaylan's data

Building glycogen from glucose molecules is an example of what

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?