Enzymes that catalyze the removal of a a functional group and its subsequent attachment to a new substrate are called ________.
A. oxidoreductases
B. ligases
C. lyases
D. transferases
E. isomerases
Answer: D
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During fermentation, pyruvate is:
A. oxidized. B. reduced. C. phosphorylated. D. hydrogenated. E. carboxylated.
Successive nucleotides of a DNA chain are joined by:
A. phosphodiester bonds between the 5' carbon of one nucleotide and the 2' carbon of the next. B. glycosidic bonds between the 5' carbon of one nucleotide and the 3' carbon of the next. C. hydrogen bonds between the complementary bases. D. ionic bonds between the phosphate group of one nucleotide and the sugar group of the next. E. phosphodiester bonds between the 3' carbon of one nucleotide and the 5' carbon of the next.
The ancestor to all plants is believed to be
a. a green alga. b. a red alga. c. a brown alga, like kelp. d. a diatom. e. a sea grass.
You might have been accidentally exposed to an insecticide while working in a citrus grove. What symptoms of poisoning would you watch for?
A) depression B) Alzheimer's disease C) muscle tremors D) excessive urination