What is the difference between a methylotroph and methanotroph?
A) Methylotrophs are strict anaerobes, while methanotrophs are strict aerobes.
B) Methylotrophs use organic carbon lacking C-C bonds as electron donors and carbon sources, while methanotrophs exclusively use methane as an electron donor and carbon source.
C) Methylotrophs produce organic carbon lacking C-C bonds, while methanotrophs exclusively produce methane.
D) Methylotrophs are in Proteobacteria, while methanotrophs are in Archaea.
Answer: B
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Fill in the blank with the appropriate word.
The genital tract infection characterized by an unpleasant odor and an increase in clue cells is
A. trichomoniasis. B. candidiasis. C. amoebiasis. D. bacterial vaginosis
A deficiency in a plant micronutrient
A. is less serious than a deficiency in a macronutrient. B. makes that plant susceptible to herbivores. C. can have a severe effect on plant growth. D. results in no visible symptoms. E. has no impact on the agriculture of a region.
Comb shape in chickens is controlled by
A) the interaction of three alleles and codominance, resulting in four different phenotypes. B) one gene with incomplete dominance, resulting in three different phenotypes. C) the epistatic interaction of two genes, resulting in two different phenotypes. D) the interaction of two genes with complete dominance, resulting in four different phenotypes. E) None of these