The study of the interactions of organisms and their physical environment is
a. biology.
b. ecology.
c. geology.
d. paleontology.
e. physiology.
B
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Which type of muscle typically surrounds hollow tubes and organs like the stomach?
A. smooth muscle B. skeletal muscle C. cardiac muscle D. voluntary muscle E. striated muscle
A function of
A. secretion of enzymes. B. transport of water and minerals. C. transport of complex carbohydrates. D. production of spores. E. formation of dikaryotes.
In eukaryotic cells, the cell cycle is divided into two main phases in which the cell spends most of its time and metabolic energy. These two phases are
A. interphase and mitosis. B. mitosis and meiosis. C. interphase and cytokinesis. D. interphase and binary fission. E. mitosis and cytokinesis.
The rapid expansion of angiosperms late in the Mesozoic era appears to be related to their coevolution with ____.
A. dinosaurs B. gymnosperms C. insects D. mammals E. birds