Dinosaurs went extinct approximately ____

years ago.



a. 6500
b. 65,000
c. 650,000
d. 65,000,000
e. 650,000,000


D

Biology & Microbiology

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Which early naturalist is known for describing nature as a continuum of organization?

a. Darwin b. Plato c. Mendel d. Galileo e. Aristotle

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Most skeletal muscles attach to ____

a. other tissues b. bones c. the backbone d. a body opening e. other muscles

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Years before Schwann’s pronouncement that a cell

has a life of its own even as a component of a multicellular organism, the cell nucleus had been discovered by a. Robert Hooke. b. Robert Brown. c. Theodor Schwann. d. Rudolf Virchow. e. Anton van Leeuwenhoek.

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After Kingdom, what is the next taxon by which organisms are grouped?

a. class b. order c. genus d. family e. phylum

Biology & Microbiology