Which of the following is not an emerging virus?
A. HIV
B. SARS
C. influenza
D. Epstein Barr
E. All of these choices are emerging viruses.
D. Epstein Barr
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It will take approximately ____ years for
Carbon 14 to be reduced into half of the original substance.
a. 16,000 b. 11,200 c. 8,200 d. 5,370 e. 300
Heterogeneity measures, like Simpson's index, take into account:
A) number of species (richness). B) relative abundance of species (evenness). C) both A and B.
Which of the following is NOT a function of the eukaryotic cytoskeleton?
A) anchors organelles B) gives shape to the cell C) packages cellular secretions D) performs endocytosis E) aids in contraction of the cell
The most common first-position amino acid in bacterial proteins is
a. isoleucine. b. leucine. c. methionine. d. N-formylmethionine.