In the study of microbial communities, a new technique using microelectrodes is helping us to infer data about microbial activity. Microelectrodes are capable of measuring which of the following data? (Check all that apply.)
A. Measuring oxygen and nitrogen tension
B. Measuring electron donors and receptors
C. Measuring DNA amounts in the sample
D. Measuring pH
Answer: D
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Indicate whether the statement is true or false
Human saliva contains which of the following enzymes?
a. aminopeptidase b. amylase c. chymotrypsin d. pepsin e. trypsin
Which of the following is NOT a factor that determines the immunogenicity of a molecule?
A) The route of the vaccination B) The GC composition of a DNA C) The size of the antigen D) The shape of a protein E) The concentration of a protein
While examining a hot spring, you find something you haven't seen before. It has a cell membrane, but the cell wall lacks peptidoglycan. It contains both DNA and RNA. The DNA is circular. It would be classified as a(n)
A) prion. B) archaea. C) fungus. D) bacterium. E) virus.