The body weight of a healthy adult female is what percent fluid?
a. 30%
b. 40%
c. 50%
d. 60%
e. 65%
C
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Compare the teeth of Australopithecus afarensis and Homo sapiens.
a. Describe similarities and differences between the two species b. Write a hypothesis about dietary differences between the two species based on their teeth.
The evolution of similar forms in different lineages when exposed to the same selective pressures is
A. called divergence. B. called convergence. C. referred to as successive homologies. D. referred to as descent. E. also known as natural selection.
What event immediately precedes the nerve firing an action potential?
A. Depolarization is initiated. B. The threshold potential is reached. C. Volted-gated Na+ channels close. D. Volted-gated K+ channels open. E. The membrane becomes hyperpolarized.
A clone is
A) genetically identical cells derived from a single cell. B) a genetically engineered cell. C) a taxon composed of species. D) a mound of cells on an agar medium. E) None of the answers is correct.