Iron in plasma is complexed with ________ which prevents some microbes acquiring it.
A. gastroferritin
B. hemolysin
C. ferritin
D. transferrin
E. siderophores
Answer: D
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Microbial diversity is thought of in terms of phylogenetic diversity and functional diversity because
A) similar functional traits are often found in divergent phylogenetic groups. B) phylogenetic diversity dictates functional diversity in microbes. C) functional diversity only pertains to functions that are not phylogenetic. D) similar phylogenetic groups almost always have similar functional traits.
The oxygen-free gas commonly employed during anoxic incubation of a bacterial culture is a mixture of
A) nitrogen and carbon dioxide. B) nitrogen and carbon monoxide. C) nitrogen and argon. D) nitrogen and hydrogen.
Mendel’s experiments led to which of the following findings?
a. Traits are inherited as independent events. b. Recessive traits are never physically observed. c. Dominant traits eventually become latent. d. An offspring’s traits are a blend of parental traits.
Carbohydrates have which one of the following characteristics?
A) They are composed of carbon, hydrogen, nitrogen, and oxygen. B) They release energy when their peptide bonds are broken. C) They are indigestible by most organisms. D) They contain carbon, hydrogen, and oxygen in a ratio of 1-2-1. E) They are able to store and transmit genetic information.