What is the first step during transcription initiation in prokaryotes?
A. RNA polymerase binds to the promoter
B. the DNA double helix is unwound
C. transcription factors bind to the TATA box sequence
D. RNA polymerase synthesizes a short primer
E. the transcription bubble is formed
Answer: A
You might also like to view...
Which of the following is TRUE of exotic
species?
a. In general, exotic species do not have predators in their new location. b. An exotic species is a species that evolved in one region but has been introduced to and become established in another. c. An exotic species is often untroubled by competitors. d. An exotic species is often untroubled by parasites and diseases. e. All of these are true.
Passive molecular diffusion occurs when ____
a. the energy of ATP is added b. random collisions between molecules occurs c. there are variations in molecular sizes d. enzymes catalyze their movement e. vesicles break off from the membrane
Which of the following correctly describes a reaction that has reached chemical equilibrium?
A) The rate of the forward reaction is equal to the rate of the reverse reaction. B) All of the reactants have been converted to the products of the reaction. C) All of the products have been converted to the reactants of the reaction. D) Both the forward and the reverse reactions have stopped, with no net effect on the concentration of the reactants and the products.
As cheese ages, it gets
A) more acidic. B) more whey. C) more protein. D) saltier. E) more alcoholic.