For a successful emergence or re-emergence to occur, a pathogen must be introduced into a vulnerable population and have the ability to spread readily from person-to-person causing disease.
Answer the following statement true (T) or false (F)
True
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Which of the following bacteria benefits humans?
A) Enteritis Salmonella B) Lactobacillus C) Streptococcus Pyogenes D) Salmonella Typhi
Mendel accounted for the observation that traits that had disappeared in the F1 generation reappeared in the F2 generation by proposing that _____
A) new mutations were frequently generated in the F2 progeny, "reinventing" traits that had been lost in the F1 B) the mechanism controlling the appearance of traits was different between the F1 and the F2 plants C) traits can be dominant or recessive, and the recessive traits were obscured by the dominant ones in the F1 D) members of the F1 generation had only one allele for each trait, but members of the F2 had two alleles for each trait
A(n) __________ dominates bryophyte life cycles.
Fill in the blank(s) with the appropriate word(s).
Disinfectants that damage membranes include
A) alcohol. B) phenolics. C) iodine. D) hydrogen peroxide. E) both alcohol and phenolics.