Heavy metal and oxidizing agent disinfectants damage (DNA/enzymes/membranes), interfering with microbial metabolism
What will be an ideal response?
enzymes
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Which of the following structures would be the best choice as a biological indicator to test autoclave operations?
A. Endopores formed by Geobacillus (Bacillus) stearothermophilus B. Cysts formed by Azotobacter species C. Microcysts withing the fruiting bodies of myxobacteria D. Dormant spores in the conidia of Streptomyces species
The tight packing of chromatin into the chromosomes visible during nuclear division is possible due to links between
____ proteins.
a. Cdk b. H1 histone c. H3 histone d. H4 histone e. nonhistone
It is likely that an act of ________ will be defined by a sudden spike in an unusual disease reported to the public health system.
Fill in the blank(s) with the appropriate word(s).
One major difference between ectomycorrhizae and arbuscular mycorrhizae is
A. ectomycorrhizae are parasitic on plant roots while arbuscular mycorrhizae are not. B. most ectomycorrhizae are zygomycetes while most endomycorrhizae are basidiomycetes. C. ectomycorrhizae do not penetrate plant roots; arbuscular mycorrhizae penetrate plant roots. D. ectomycorrhizae are more common on plant roots than arbuscular mycorrhizae. E. ectomycorrhizae form mutualisms while arbuscular mycorrhizae are parasitic.