Which bond term describes a covalent bond in which electrons are shared unequally?
A.) polar
B.) hydrogen
C.) ionic
D.) nonpolar
Answer: A.) polar
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A scientist studying a material has determined that 12C, 13C, and 14C occur in the material in a ratio of 1000:10:1. How did he most likely differentiate between these forms of carbon?
A. by the number of protons in 12C, 13C, and 14C B. by the number of electrons in 12C, 13C, and 14C C. by the number of neutrons in 12C, 13C, and 14C D. by the biomasses of 12C, 13C, and 14C E. by the number of positrons in 12C, 13C, and 14C
Members of the ____ Lophotrochozoan phylum have highly segmented bodies, with many repeating units that are
usually separated by transverse partitions called septa.
a. Rotifera b. Mollusca c. Platyhelminthes d. Annelida e. Nemertea
All of the alleles of all of the genes of a
population make up the
a. species richness. b. species abundance. c. genome. d. gene pool. e. none of these
Which of the following is not an end-product of fermentation?
A) wine B) Lactic acid C) Ethyl alcohol D) lipid E) beer