PCR is the name of the reaction used to amplify specific sequences of DNA
A. true
B. false
A
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The amino acids in a polypeptide chain are connected by:
A) covalent bonds. B) glycosidic bonds. C) peptide bonds. D) both a and c.
The phylogenetic species concept looks at both the
a. environmental adaptations and morphology. b. genetic data and environmental adaptations. c. morphology and environmental adaptations. d. morphology and genetic data. e. species response to adverse conditions and genetic data.
When an infection occurs by the same
pathogen, the immune response is more rapid the next time around thanks to
a. effector cells. b. memory cells. c. naive T cells. d. neutrophils. e. eosinophils
Which of the following is a North American
biome that has mostly disappeared because of extensive farming of wheat and corn?
a. chaparral b. grasslands c. boreal forest d. desert e. more than one of these