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
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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
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.
Based on the figure, what conclusion could the authors deduce from the graph?
What will be an ideal response?
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