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

Biology & Microbiology

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Food energy is measured in ____

a. kilograms b. kiloliters c. kilometers d. kilocalories e. kilojoules

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For what purpose would a microbial ecologist use a microsensor?

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The primary viral cause of chronic diarrhea globally is ________.

A. adenovirus B. norovirus C. rotavirus D. Cryptosporidium E. arbovirus

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