The two nitrogen atoms in nitrogen gas (N2) share six electrons forming a _____
A. hydrogen bond
B. double bond
C. single covalent bond
D. double covalent bond
E. triple covalent bond
E
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Arrange the following genetic terms in order from smallest to largest
A. gene; DNA strand; chromosome; genome B. genome; gene; chromosome; DNA strand C. DNA strand; chromosome; Gene; Genome D. DNA strand; Gene; Genome; Chromosome E. Gene; Chromosome; DNA strand; Genome
A particle that consists of nucleic acids surrounded by protein and requires a host organism to replicate is
A. a bacteria. B. a viroid. C. a plasmid. D. a virus. E. a prion.
According to the concept of punctuated equilibrium, _____
A) natural selection is unimportant as a mechanism of evolution B) given enough time, most existing species will gradually give rise to new species C) a new species accumulates most of its unique features as it comes into existence D) evolution of new species features long periods during which changes are occurring, interspersed with short periods of equilibrium, or stasis
Current research in behavioral ecology focuses on the overall contribution that behavior makes to an animal's
A. competitive strategies. B. learning. C. length of life. D. foraging efficiency. E. fitness.