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GACE science math 088 test(61 questions with complete solutions).
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GACE science math 088 test(61 questions with complete solutions).
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GACE science/math 088
test(61
questions with
complete
solutions)
A group of students measured the boiling
point of three different samples of pure
water. Each measurement was made by a
different student using the same
thermometer. Their measurements were
94ºC, 99ºC, and 104ºC. Which of the
following most likely accounts for the
discrepancy in the measurements? - answer
The students misread the markings on the
thermometer.
,Option (B) is correct. The error that most
likely accounts for the discrepancy in the
measurements is that the students misread
the markings on the thermometer. The
temperature at which water boils (100ºC at a
pressure of 1 atmosphere) is the same
regardless of what hot plate is used and how
long the water is heated. If the thermometer
had inaccurate markings, the students'
measurements would likely all be either
above or below the known boiling point.
The invention of the first known practical
telescopes in the seventeenth century
enabled astronomers to observe rings around
which of the following planets? - answer
Saturn
Option (C) is correct. Saturn, the second
largest planet in the solar system, has the
most extensive ring system in the solar
system. Saturn's disklike rings were first
observed and described in the seventeenth
century after the invention of the first known
practical telescopes.
,Which of the following best explains the
necessity of completing the entire course of
an antibiotic prescribed for a bacterial
infection? - answer Some bacteria are more
difficult to eliminate and require a longer
antibiotic exposure.
Option (D) is correct. In the beginning of a
course of treatment, antibiotics kill or inhibit
the growth of the more susceptible bacteria.
The remaining bacteria are more resistant to
the action of the antibiotic and longer
exposures are required. Discontinuing use of
an antibiotic before the resistant bacteria are
eliminated may lead to increasingly
antibiotic-resistant strains of bacteria.
Antibiotics are only effective against
bacterial infections.
A block is accelerating along a flat surface
under the action of a force applied parallel to
the surface. If the magnitude of the applied
force is doubled, then the magnitude of the
block's acceleration will - answer double
, Option (B) is correct. According to Newton's
second law of motion, the acceleration of the
block is directly proportional to the applied
force acting on the block. If the applied force
is doubled in magnitude, then the block's
acceleration will double in magnitude.
Which of the following best describes the
process of transpiration in the water cycle? -
answer It is the evaporation of water
through the leaves and stems of plants.
Option (C) is correct. Transpiration is the
evaporation of water from the leaves and
stems of a plant to the atmosphere.
Transpiration is one process in the water
cycle by which liquid water is changed to
atmospheric water vapor. Evaporation from
bodies of water is the primary source of
water vapor in the atmosphere.
Which of the following organelles are directly
involved in cellular respiration, the
breakdown of sugars for energy? - answer
Mitochondria
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