The methodology of microbial ecology includes
A) enrichment and isolation of specific microbes.
B) cell-staining methods.
C) gene, transcript, and protein characterization.
D) enrichment and isolation of specific microbes, cell-staining, and gene, transcript, and protein characterization.
Answer: D
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The ________ is a factor-independent termination site found in the leader region of certain operons, which, under the influence of ribosome behavior, controls the continued transcription of that operon.
A. terminator B. operator C. attenuator D. modulator
________ are small peptide molecules (10—50 amino acids in length) that affect membrane permeability.
Fill in the blank(s) with the appropriate word(s).
Each hemoglobin molecule carries ______ oxygen molecules.
A. 1 B. 2 C. 3 D. 4
Edge effects are the result of which of the following?
A. Populations of flora and fauna have emigrated from the core of their population center to the edge of their habitat. B. Populations of particular species have decreased and are on the edge of extinction. C. Habitat fragmentation or habitat shrinkage has occurred, and thus the edge of the habitat has increased in relative proportion. D. Habitat fragmentation or habitat shrinkage has occurred, and thus the edge of the habitat has decreased in relative proportion. E. Metapopulations of some of the larger fauna have become more dominant on the landscape and as a result have increased the edge of their habitat.