Use the dichotomous key in Table 10.2 to identify a gram-negative rod that ferments lactose and uses citric acid as its sole carbon source.
A) Citrobacter
B) Escherichia}
C) Lactobacillus
D) Pseudomonas
E) Staphylococcus
Ans: A) Citrobacter
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For what purpose would a microbial ecologist use a microsensor?
A) to determine the concentration of cells in small increments in a sediment or water column B) to determine the expression of a particular gene in a microbial community C) to quantify the uptake of a radioactive material D) to determine the concentration of O2, N2O, or other chemical species in small increments in a sediment or water column
The primary viral cause of chronic diarrhea globally is ________.
A. adenovirus B. norovirus C. rotavirus D. Cryptosporidium E. arbovirus
Food energy is measured in ____
a. kilograms b. kiloliters c. kilometers d. kilocalories e. kilojoules
A range of values such that there is a specified probability that they contain a population parameter is known as a(n):
A. confidence interval. B. random sample. C. unbiased estimator. D. sample mean.