A mammal is _____ and has a body temperature _____.

A) ectothermic; that changes with fluctuation in environmental temperature
B) endothermic; that changes with fluctuation in environmental temperature
C) ectothermic; maintained by its own metabolism
D) endothermic; maintained by its own metabolism
E) None of the answer choices is correct.


Ans: D) endothermic; maintained by its own metabolism

Biology & Microbiology

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Because of its association with tools, the earliest human was called ____________ meaning "handy man."  

A.  Homo habilis B.  Homo erectus C.  Homo sapiens D.  Neanderthal E.  Cro-Magnon

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The science that deals with when diseases occur and how they are transmitted is called

A) ecology. B) epidemiology. C) communicable disease. D) morbidity and mortality. E) public health.

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Based on the figure, what conclusion could the authors deduce from the graph?

What will be an ideal response?

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The diploid number for a human cell is 46; the chromatid number for a somatic cell at the beginning of G2 would therefore be _____.

A) 4 B) 23 C) 69 D) 92 E) different, depending on the cell type

Biology & Microbiology