The progress of the eukaryotic cell cycle is regulated primarily by what proteins?
A. Cyclins
B. Histone proteins
C. Condensins
D. FtsZ
A. Cyclins
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Which of the following does not indicate microbe involvement in energy and nutrient flow?
A. Formation of greenhouse gases, CO2 and methane B. Thermal hot springs warmed by heat from earth's interior C. Decomposition of dead matter and wastes D. Digestion of complex carbohydrates in animal diets
Newly hatched goslings follow any large moving
objects to which they are exposed shortly after hatching. This behavior is an example of a. homing. b. imprinting. c. piloting. d. migration. e. classical conditioning.
Precambrian rocks contain fossils of:
a. only single celled organisms. b. great forests of flowering plants. c. the first insects. d. cells and simple organisms. e. primitive fish.
A reaction that involves the transfer of electrons from one molecule to another is referred to as
a. an oxidation reaction. b. a redox reaction. c. a reduction reaction.