Microbial strains that can grow on minimal medium are called ________.
A. minitrophs
B. prototrophs
C. auxotrophs
D. autotrophs
Answer: B
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The Nocardiaceae bacterium, Rhodococcus, is of considerable interest because of its variety of enzymatic degradation pathways. Which of the following is(are) able to be broken down by Rhodococcus? (Check all that apply.)
A. Detergents B. Pesticides C. Petroleum hydrocarbons D. Stainless steel
If a person had the thymus gland removed, which process would be most affected in his or her body?
a. maturation of B cells b. production of B cells c. production of T cell d. maturation of T cells
Assume that a Chi-square test was conducted to test the goodness of fit to a 9:3:3:1 ratio and a Chi-square value of 10.62 was obtained. Should the null hypothesis be accepted?
What will be an ideal response?
Which of the following statements about predation are true? Check all that apply.
A. Batesian mimicry is not a coevolutionary adaptation to predation. B. Predation can induce coevolutionary changes in prey species. C. Animal predation on plants is called herbivory. D. Removal of a predator often leads to increased community stability. E. Cycling of predator and prey populations is not commonly observed.