What enzyme is used to "glue" together the ends of cut pieces of DNA?
a. DNA polymerase
b. RNA polymerase
c. DNA ligase
d. restriction enzymes
e. protease
C
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When the amount of enzyme present is held constant, the rate of a reaction will continue to increase as long as the substrate concentration increases.
Answer the following statement true (T) or false (F)
Classical" nuclear localization signals are composed primarily of
a. hydrophobic amino acids. b. acidic amino acids. c. basic amino acids. d. sulfur-containing amino acids.
You have isolated an organism that contains endospore. You can assume that this cell lacks
A. cell wall B. membrane-enclosed organelles C. plasmid D. pili E. Not enough information to assume anything
Which of the following is a false statement about plant secondary metabolites?
A. Some of them can cross the placenta during pregnancy. B. They are too unpredictable to use in pharmaceutical research. C. Some can be used to treat human diseases. D. The activity of certain medicines is due to secondary metabolites. E. Some can be poisonous to humans.