This group occupied Europe and western Asia from about 150,000 to 28,000 years ago. They had a
heavier build, more pronounced brow ridges, and slightly larger brains than modern humans, and were
culturally and technologically sophisticated.
a. Homo habilis
b. Homo erectus
c. Australopithecus africanus
d. Australopithecus afarensis
e. Homo neanderthalensis
E
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The oxygen consuming property of a wastewater sample is designated by the term
A. lagooning. B. stabilization. C. activation. D. biochemical oxygen demand.
Many plants wind up with a Na+ concentration that is considerably lower than that of the surrounding
soil. Which of these plays a key role in allowing for such a difference to exist?
a. water potential b. aquaporins c. root cap d. endodermis e. tonoplast
Each of the following provides evidence in support of the primary role of RNA in the evolution of life EXCEPT:
A. Some RNA molecules are catalytic. B. ATP (energy currency of the cell) is a ribonucleotide. C. RNA can regulate gene expression. D. RNA is less chemically stable than DNA. E. RNA catalyzes peptide bond formation during protein synthesis.
Before a cell divides, it must ____ its genetic information
a. duplicate b. translate c. isolate d. protect e. distribute