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
Which molecular method allows for the detection of a specific organism within a diverse microbial community?
A) fluorescent DNA staining using DAPI
B) viability staining
C) enrichment techniques
D) fluorescent in situ hybridization
Collective estimates of the physiological reactions occurring in the entire microbial community are known as ________ measurements.
A) in vitro
B) in situ
C) activity
D) metagenomics
Which technique would be used to estimate the concentration of naturally occurring Escherichia coli in a wastewater sample?
A) agar dilution tube method
B) laser tweezers method
C) most probable number (MPN) method
D) cell tagging using GFP method
Microarrays are useful for assessing
A) gene expression.
B) enzyme activity.
C) the presence of specific rRNA sequences.
D) gene expression and the presence of specific rRNA sequences.