Running out of time: Article reading #2: Abstract of an article about the effect of stress on bacteria Bacteria spend th

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Running out of time: Article
reading #2: Abstract of an article about the effect of stress on
bacteria
Bacteria spend their lives buffeted by changing environmental
conditions. To adapt and
survive these stresses, bacteria have global response systems that
result in sweeping
changes in gene expression and cellular metabolism. These responses
are controlled by
master regulators, which include: alternative sigma factors, such
as RpoS and RpoH;
small molecule effectors, such as ppGpp; gene repressors such as
LexA; and, inorganic
molecules, such as polyphosphate.
The response pathways extensively overlap and are induced to
various extents by the
same environmental stresses. These stresses include nutritional
deprivation, DNA
damage, temperature shift, and exposure to antibiotics. All of
these global stress
responses include functions that can increase genetic variability.
In particular, up-
regulation and activation of error-prone DNA polymerases,
down-regulation of error-
correcting enzymes, and movement of mobile genetic elements are
common features of
several stress responses. The result is that under a variety of
stressful conditions, bacteria
are induced for genetic change. This transient mutator state may be
important for
adaptive evolution.
An appropriate title for Article reading #2 would be: “Bacteria
which are experiencing stress tend to mutate _______ unstressed
bacteria.”
Group of answer choices
The same as
More than
Less than
No answer text provided.