Which of the following biochemical reactions identifies an organism associated with blood, bone, and joint infections in young children?
a. Positive catalase, positive nitrate reduc-tion, and positive indole
b. Negative catalase, positive nitrate reduc-tion, and positive indole
c. Negative catalase, negative nitrate reduc-tion, and positive indole
d. Negative catalase, negative nitrate reduc-tion, and negative indole
D
The organism is K. kingae and is associated with blood, bone, and joint infections of young children and is negative for all of the tests listed in Table 30-5.
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Many algal species have life cycles consisting of alternating haploid and diploid generations. The most common life
cycle in brown algae consists of organisms that are ____.
a. unicellular in the haploid stage and multicellular in the diploid stage b. multicellular in the haploid stage and unicellular in the diploid stage c. unicellular in both the haploid and diploid stages d. multicellular in both the haploid and diploid stages e. colonial in both the haploid and diploid stages
Two host races of apple maggots have appeared within the past 100 years. This suggests that they may
be undergoing
a. parapatric speciation. b. allopatric speciation. c. sympatric speciation. d. genetic drift. e. development of a hybrid zone.
A patient reports an inability to feel or recognize expressions of fear in others. Damage to which structure in the brain could be responsible for these symptoms?
a. cerebellum b. brainstem c. amygdala d. hypothalamus
The amount of energy required to raise the temperature of 1 kilogram of water by 1° Celsius is a
A. joule. B. None of the answer choices is correct. C. kilocalorie. D. calorie. E. measure of density.