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


A.  Homo habilis

Biology & Microbiology

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In the respiration of terrestrial animals, “ventilation”

refers to a. the bulk movement of air in and out of the organism. b. the diffusion of gases across a membrane. c. the diffusion of gases in and out of blood cells. d. the transport of gases to and from body cells. e. all of these.

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Which of the following is a normal skin resident?

A. Clostridium perfringens B. Staphylococcus aureus C. Streptococcus mutans D. Staphylococcus epidermidis

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In the Hardy-Weinberg Frequency p^2 represents __________.

a. homozygous dominant b. heterozygous c. homozygous recessive d. the entire population

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Overspecialized adaptations

A) promote survival in a wide range of habitats. B) are the result of natural selection. C) are found only in species with very wide geographic ranges. D) enable a species to be more adaptable to environmental changes. E) enable a species to be more independent of other species.

Biology & Microbiology