NLN Practice Questions / 148 Q&A/ A+ Score
Solution
1 kilogram (kg) of solid X at 10°C and 1 kg of solid Y at 10°C each absorb 5 joules of
heat energy. The final temperatures of X and Y are 15°C and 20°C, respectively.
Compared to X, Y must have a lower
specific heat.
conductive heat.
heat of fusion.
heat of vaporization. - Answer: specific heat.
A drop of dilute ammonium hydroxide (NH4OH) is placed on one side of a slide
containing a large number of swimming paramecium. Under this condition, which
of these behaviors of the paramecia will be observed?
They will eventually all swim toward the ammonium hydroxide.
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,During exercise, a person's respiratory rate increases due to
an increase in CO2 concentration in the blood.
a decrease in O2 concentration in the lungs.
an increase in hemoglobin in the blood.
a decrease in CO2 concentration in the blood. - Answer: an increase in CO2
concentration in the blood.
If a person is fasting for 24 hours and ingests no carbohydrates, the liver will
provide for the body's need by
converting glycogen into glucose.
breaking down red blood cells.
emulsifying fat.
producing more bile. - Answer: converting glycogen into glucose.
If all of the second-order consumers within an ecosystem of a region were
removed, the most likely short-term effect would be
a decrease in decomposers.
an increase in producers.
an increase in the number of first-order consumers.
a decrease in the number of first-order consumers. - Answer: an increase in the
number of first-order consumers.
In order to observe the endoplasmic reticulum in a cell, a scientist would use
a light-microscope.
an electron microscope.
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,an ultracentrifuge.
dissecting instruments. - Answer: an electron microscope.
Muscles are attached to bone by which of these structures?
Cartilage.
Ligament.
Capsula.
Tendon. - Answer: Tendon.
Sodium will react most readily with
potassium.
helium.
chlorine.
boron. - Answer: chlorine.
Sugar molecules enter a cell against a concentration gradient by the process of
passive diffusion.
facilitated diffusion.
osmosis.
active transport. - Answer: active transport.
The amplitude of a sound wave is most closely related to its
pitch.
speed.
wavelength.
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, loudness. - Answer: loudness.
The full set of genes in an individual is known as
specific DNA.
the human genome.
a chromosomal pattern.
cellular identity. - Answer: the human genome.
The physics principle that is primarily used in developing a rollercoaster ride is
centripetal force.
specific gravity.
quantum energy.
certainty principle. - Answer: centripetal force.
The surface of the moon has almost no atmosphere and is one-sixth the
gravitational acceleration of the earth. If a feather and a hammer were dropped
near the surface of the moon,
the feather would hit the surface first because it has less mass.
the hammer would hit the surface first because it has more mass.
the feather and the hammer would hit the surface at the same time.
it is impossible to predict which would hit the surface first without more
information. - Answer: the feather and the hammer would hit the surface at the
same time.
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Solution
1 kilogram (kg) of solid X at 10°C and 1 kg of solid Y at 10°C each absorb 5 joules of
heat energy. The final temperatures of X and Y are 15°C and 20°C, respectively.
Compared to X, Y must have a lower
specific heat.
conductive heat.
heat of fusion.
heat of vaporization. - Answer: specific heat.
A drop of dilute ammonium hydroxide (NH4OH) is placed on one side of a slide
containing a large number of swimming paramecium. Under this condition, which
of these behaviors of the paramecia will be observed?
They will eventually all swim toward the ammonium hydroxide.
Page 1 of 41
,During exercise, a person's respiratory rate increases due to
an increase in CO2 concentration in the blood.
a decrease in O2 concentration in the lungs.
an increase in hemoglobin in the blood.
a decrease in CO2 concentration in the blood. - Answer: an increase in CO2
concentration in the blood.
If a person is fasting for 24 hours and ingests no carbohydrates, the liver will
provide for the body's need by
converting glycogen into glucose.
breaking down red blood cells.
emulsifying fat.
producing more bile. - Answer: converting glycogen into glucose.
If all of the second-order consumers within an ecosystem of a region were
removed, the most likely short-term effect would be
a decrease in decomposers.
an increase in producers.
an increase in the number of first-order consumers.
a decrease in the number of first-order consumers. - Answer: an increase in the
number of first-order consumers.
In order to observe the endoplasmic reticulum in a cell, a scientist would use
a light-microscope.
an electron microscope.
Page 2 of 41
,an ultracentrifuge.
dissecting instruments. - Answer: an electron microscope.
Muscles are attached to bone by which of these structures?
Cartilage.
Ligament.
Capsula.
Tendon. - Answer: Tendon.
Sodium will react most readily with
potassium.
helium.
chlorine.
boron. - Answer: chlorine.
Sugar molecules enter a cell against a concentration gradient by the process of
passive diffusion.
facilitated diffusion.
osmosis.
active transport. - Answer: active transport.
The amplitude of a sound wave is most closely related to its
pitch.
speed.
wavelength.
Page 3 of 41
, loudness. - Answer: loudness.
The full set of genes in an individual is known as
specific DNA.
the human genome.
a chromosomal pattern.
cellular identity. - Answer: the human genome.
The physics principle that is primarily used in developing a rollercoaster ride is
centripetal force.
specific gravity.
quantum energy.
certainty principle. - Answer: centripetal force.
The surface of the moon has almost no atmosphere and is one-sixth the
gravitational acceleration of the earth. If a feather and a hammer were dropped
near the surface of the moon,
the feather would hit the surface first because it has less mass.
the hammer would hit the surface first because it has more mass.
the feather and the hammer would hit the surface at the same time.
it is impossible to predict which would hit the surface first without more
information. - Answer: the feather and the hammer would hit the surface at the
same time.
Page 4 of 41
