Dissimilative iron-reducing bacteria couple the
A) reduction of ferric iron or manganese to the oxidation of sulfur.
B) reduction of ferric iron or manganese to the fermentation of sugars.
C) oxidation of H2 or organic compounds to the reduction of ferric iron or manganese.
D) reduction of ferric iron to photosynthesis.
Answer: C
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Meningitis can be caused by
A) viral infections. B) bacterial infection. C) fungal infections. D) viral, bacterial, or fungal infections.
Molecular data can be used to assess relationships among the major groups of living organisms whose common ancestors lived millions or billions of years ago. Similar techniques can be used to assess relationships among populations within a species. How
can molecular techniques be useful for such varied comparisons? A) Studying the relationships among different populations of a single species can be just as effective as studying the relationships of major biological groups if you look at a lot more genes. B) Faster-evolving gene sequences provide better data for comparisons among close relatives, whereas very slowly evolving sequences work best for distantly related taxa. C) The relationships between very different groups, such as bacteria and whales, are assessed using mtDNA sequences, whereas rRNA sequences are used for very closely related groups.
Pathogen is ________.
A. a name given to all archaea B. a name given to all bacteria C. a name given only to bacteria that cause serious illnesses in humans D. a name given only to helpful bacteria
Explain the key differences between gradualistic equilibrium and punctuated equilibrium.
What will be an ideal response?