There are naturally occurring microbes that have the ability to degrade several of the compounds found in oil.
a. true
b. false
Ans: a. true
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When antiseptics and disinfectants are compared, antiseptics are generally
A. unpredictable in toxicity. B. equally as toxic. C. more toxic. D. less toxic.
The genomes of closely related species are more similar than distantly related species because _____
a. the less time since the species diverged, the more lethal DNA mutations will accumulate b. the more time since the species diverged, the more neutral DNA mutations will accumulate c. the less time since the species diverged, the more neutral DNA mutations will accumulate d. the more time since the species converged, the fewer adaptive DNA mutations will accumulate e. all organisms will accumulate lethal DNA mutations at the same rate
Which of the following statements regarding virus taxonomy is true?
A) Viruses are classified on the basis of the taxonomy of their host organisms. B) Virus classes are well established. C) Some virus family names are derived from the name of an important member of the family. D) The species epithet is a Latin descriptor of the virion structure. E) Virus classes are based on the domain of the host organism.
Members of the ________ are Gram-positive bacteria that have a distinctive process for cell separation known as "snapping division."
A. Actinomycetes B. Clostridium C. Corynebacterium D. Mycoplasma E. Rhizobium