Which of the following would turn OFF the expression of the genes in an operon? A) repressor is released/removed from the operator (ie-repressor is NOT bound to the operator)

B) RNA polymerase binds to promoter

C)repressor binds to operator

D)whenever the cell needs the proteins specified by operon genes

E)repressor binds to RNA polymerase

in 1972 the fluid—mosaic membrane model of membrane structure was proposed based on thermodynamic principals of organization of membrane lipids and proteins and available evidence of asymmetry and lateral mobility within the membrane matrix [s. j. singer and g. l. nicolson, science 175 (1972) 720–731].

the bedroo..

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

answer; polycythemia is the correct answer;