Question

49
which choice best describes the relationship between
passage 1 and passage 2?
a) passage 2 offers an evaluation of the significance
of the research discussed in passage 1.
b) passage 2 suggests a modification to the
methodology described in passage 1.
c) passage 2 uses concrete examples to illustrate
concepts considered in passage 1.
d) passage 2 takes a dismissive stance regarding the
findings mentioned in passage 1.

50
both passages make the point that teixobactin could
be useful in
a) standardizing the future development of
antibiotics produced in laboratory
environments.
b) combating infections that are no longer
responding to treatment with other antibiotics.
c) controlling the spread of pathogenic soil fungi.
d) shaping a new method of studying the
effectiveness of antibiotics.

51
information in passage 2 best supports which
conclusion about the mice in the experiment
described in passage 1?
a) exposure to teixobactin made them less
susceptible to subsequent upper respiratory tract
infections.
b) gram-positive bacteria enhanced the
effectiveness of teixobactin against their upper
respiratory tract infections.
c) their upper respiratory tract infections were
likely not caused by gram-negative bacteria.
d) teixobactin attacked the proteins of the bacteria
that caused their upper respiratory tract
infections.

52
which choice provides the best evidence for the
answer to the previous question?
a) lines 51-56 (\many ... antibiotics\)
b) lines 64-68 (\this ... before\)
c) lines 69-72 (\the first ... bad\)
d) lines 80-82 (\it doesnt ... wall\)

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Explanation:

Question 49

To determine the relationship between Passage 1 and Passage 2, we analyze each option:

• Option A: Passage 2 does not evaluate the significance of Passage 1's research. Eliminate A.
• Option B: Passage 2 does not suggest a modification to Passage 1's methodology. Eliminate B.
• Option C: Passage 2 likely uses concrete examples (like the mice experiment) to illustrate concepts (e.g., teixobactin's effectiveness) from Passage 1. This is a common relationship in paired passages.
• Option D: Passage 2 does not take a dismissive stance; it likely supports or elaborates on Passage 1's findings. Eliminate D.

We analyze what both passages say about teixobactin's use:

• Option A: There's no mention of standardizing antibiotic development. Eliminate A.
• Option B: Teixobactin is often discussed as effective against infections resistant to other antibiotics (superbugs), so combating such infections fits.
• Option C: Teixobactin targets bacteria, not soil fungi. Eliminate C.
• Option D: It's about treating infections, not shaping a new study method. Eliminate D.

For the mice experiment in Passage 1, we analyze the conclusion supported by Passage 2:

• Option A: Passage 2 doesn't support teixobactin reducing susceptibility to subsequent infections. Eliminate A.
• Option B: It's about teixobactin's effect, not gram - positive bacteria enhancing it. Eliminate B.
• Option C: If teixobactin (effective against gram - positive) worked on the mice's infections, the infections were likely not from gram - negative (since teixobactin is less effective against them). This is supported.
• Option D: Passage 2 doesn't say teixobactin attacks bacterial proteins. Eliminate D.

Answer:

C) Passage 2 uses concrete examples to illustrate concepts considered in Passage 1.

Question 50