Enzymes that catalyze moving a phosphate from one substrate to another are called
A. ligases.
B. aminotransferases.
C. decarboxylases.
D. oxidoreductases.
E. phosphotransferases.
Answer: E
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Which of the following statements concerning complex multicellular organisms is true?
A. Plants and animals use bulk transport systems to move gasses and nutrients, but fungi and algae do not. B. Bulk transport systems require specialized organs like a heart to pump nutrients and dissolved gasses deep into tissues that are not in contact with the external environment. C. Bulk transport systems move substances faster than simple diffusion.
The original three components of the cell theory are that all organisms
A. have DNA, DNA is the fundamental unit of life, and all cells come from preexisting cells. B. are made of one or more cells, the cell is the fundamental unit of life, and all cells come from preexisting cells. C. are made of one or more cells, the cell is the fundamental unit of life, and all cells have a nucleus. D. have DNA, are made of cells, and all cells produce proteins. E. are made of one or more cells, all cells contain DNA, and all cells come from preexisting cells.
The "total amount of money" earned by a business is to "money earned by regular sales" plus the "extra money earned through increased customers when a business voluntarily performs a community service" as:
a) direct fitness is to the sum of indirect fitness and kin selection. b) alarm calls are to the sum of personal alarm calls and community alarm calls. c) total selection is to the sum of kin selection and reciprocal altruism. d) kindness towards individuals is to the sum of kin selection and indirect fitness. e) inclusive fitness is to the sum of direct and indirect fitness.
Which proteins are likely to act as gene repressors?
(a) G (b) H (c) J (d) both H and J