are described in line 16 as able to go
beyond chewing. Choices
a,
b, and
c are distracters that might be chosen if not reading care-
fully. Choice
e,
preparation, is too vague.
387.
b. Lines 30–32 clearly
state that dentinal tubules are micro-canals
that radiate outward through the dentine from the pulp cavity to the
exterior cementum border.
388.
c. In
the passage, the substances in choices
a,
b,
d, and
e are all
described as organic substances. Therefore, choice
c, an inor-
ganic
substance, is correct.
389.
a. Lines 55–58 identify how natural ivory can be authenticated.
390.
c. According to the fifth paragraph of the passage, enamel is the
hardest animal tissue (animal tissue,
by nature, is a living thing,
and thus organic), ameloblasts help form it,
and it has a pris-
matic structure (choices
a,
b,
d, and
e). Choice
c is incorrect
because lines 55–58 state that ivory is commonly tested via
ultraviolet light, which would indicate exposure.
391.
c. Choice
c is correct because these lines specifically
speak to the
evaluation process of the scientific method.
392.
d. The entire passage is instructive and about educating
the reader.
393.
e. Falsificationism means to refute and prove wrong as supported in
lines 38 and 63 of the passage.
394.
d. Peer review is proposed as a vital part of the scientific method,
and it is directly supported as such by lines 61–67
in the pas-
sage. The other statements are all true.
395.
c. Lines 31–35 of the passage support this truth about hypotheses.
The other statements about hypotheses are false.
396.
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