When the catabolite activator protein binds to its binding site in DNA, it ________.
A. bends the DNA
B. promotes the assembly of other transcription factors at the promoter
C. displaces repressors
D. eliminates the need for a sigma factor on the part of RNA polymerase
Answer: A
You might also like to view...
The single most important physical sign of primary syphilis is
A) the chancre. B) a skin rash. C) paralysis. D) an acute eye infection.
Which portion of a phospholipid is hydrophilic?
a. fatty acid tails b. glycerol heads c. The entire phospholipid is hydrophilic. d. None of the phospholipid is hydrophilic.
The bases are bonded to what part of the backbone of the DNA molecule?
a. the 1' carbon atom of the sugar molecule b. the 2' carbon atom of the sugar molecule c. the 3' carbon atom of the sugar molecule d. the 4' carbon atom of the sugar molecule e. the 5' carbon atom of the sugar molecule
Prokaryotes are a class of microbes that are characterized by all of the following EXCEPT:
A. Their ribosomes are 70S B. Almost all members possess a cell wall. C. Their genetic materials are enclosed by a nuclear membrane thus forming a nucleoid. D. Their genetic materials are composed of DNA and RNA E. Presence of bilayer cytoplasmic membrane.