The helix-turn-helix motif found in many regulatory proteins fits into the side of a DNA molecule. If a
newly discovered enzyme has a helix-turn-helix motif, you would predict that
a. this enzyme has multiple peptide chain subunits.
b. this enzyme is probably able to bind to RNA, too.
c. this enzyme probably binds to DNA.
d. this enzyme has an allosteric regulator.
e. this enzyme is a polymerase that helps synthesize new DNA sequences.
C
You might also like to view...
In the DNA ligase reaction, the lysine residue:
A. serves as the nucleophile displacing the phosphate group 3' to the nicked site. B. serves as the electrophile displacing the phosphate group 3' to the nicked site. C. remains phosphorylated after the ligase reaction. D. serves as a nucleophile, which displaces the pyrophosphate from ATP. E. remains bound to AMP, ready to repeat the reaction.
Flagella move in a whip-like motion.
Answer the following statement true (T) or false (F)
Mitosis occurs in germ cells.
Answer the following statement true (T) or false (F)
The first classification systems were based mainly on structural features. However, modern classification systems take other criteria into account. Which criterion serves as the basis for the modern classification system?
A) habitat B) morphology C) body plan D) evolutionary relationships