A growth medium used for the recovery of fungal isolates from patient specimens contains antibiotics to prevent the overgrowth of bacteria and cycloheximide to prevent the growth of saprophytic fungi. This medium would be categorized as ________.
A. selective
B. enrichment
C. differential
D. enriched
E. both selective and differential.
Answer: A
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Which of the following taxa are known to contain species that cultivate fungi for food? Check all that apply.
_____ leaf-cutting ants _____ humans _____ termites _____ beetles _____ nematodes
Which of the following plant groups contains the gene LFY?
a. Only mosses, which arose 400 million years ago. d. Only plants with flowers because expression of the gene gives rise to flowers. b. Only plants with leaves because expression of the gene gives rise to leaves. e. All land plants. c. Only plants with apical meristems because expression of the gene regulates meristematic tissue.
One of the primary reasons for generating a large number of clones in a eukaryotic genomic library is that ________
A) lysogenic phages continue to integrate their DNA into the host chromosome, thus reducing the number of desired recombinant clones B) each cosmid replicates in coordination with the host chromosome C) the host range of the vector is limited D) each ligation product is sequence specific E) each vector can take up only a relatively small fraction of the eukaryotic DNA
You are asked to help solve a murder, and a note from the murderer taunting the police says that the crime was committed using a lipid. What molecule could you exclude from your search?
What will be an ideal response?