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.
Page 1 of 41
,They will show no net change in behavior to the ammonium hydroxide.
They will all be instantly killed by the ammonium hydroxide.
They will eventually all swim away from the ammonium hydroxide. - Answer:
They will eventually all swim away from the ammonium hydroxide.
The organ that filters metabolic waste from the blood is the
small intestine.
liver.
kidney.
stomach. - Answer: kidney.
The process of nuclear cell division in the cell reproduction of plants differs from
mammals. A major difference is that
homologous chromosomes are paired.
centrioles are replicated.
spindle fibers are missing.
cell plates are synthesized. - Answer: homologous chromosomes are paired
In animals, the cell is split from the outside by a contractile ring, forming a
cleavage furrow. A layer of actin and myosin filaments underneath the plasma
membrane at the cell center begins to contract until the cell is essentially pinched
in half. In plants, a new cell wall forms inside the cell that grows outward until the
formation of two new cells. The assembly of a new cell wall forms by vesicles filled
with cellulose and lignin, which eventually fuse together to create a new cell wall,
and the parent cell splits in two.
Page 2 of 41
,Which of these conditions is associated with smoking?
Esophageal varices.
Tonsillitis.
Emphysema.
Blindness. - Answer: Emphysema.
Which of these equations best illustrates a synthesis reaction?
2Na + Cl2 -> 2NaCl
NaOH + HCl -> NaCl + H2O
2H2O2 -> 2H2O + O2
CH4 + 2O2 -> CO2 + 2H2O - Answer: 2Na + Cl2 -> 2NaCl
Which of these hydrocarbons is a member of the benzene family?
Toluene.
Ethyne.
Propanone.
Methanol. - Answer: Toluene.
Which of these particles can only be found in the nucleus of an atom?
protons, only.
electrons, only.
protons and neutrons.
neutrons and electrons. - Answer: protons and neutrons.
Page 3 of 41
, Which of these sequences of anatomic organization, from the simplest level to the
most complex, is the correct sequence?
From tissue, organ, organ system to organism.
From organ system, organ, tissue to organism.
From tissue, organ system, organ to organism.
From organ, organ system, tissue to organism. - Answer: From tissue, organ,
organ system to organism
Which of these single instruments may be used to measure the current flowing
through a circuit?
A voltmeter.
An ammeter.
A potentiometer.
An ohmmeter. - Answer: An ammeter.
Which of these substances contains a nonpolar covalent bond?
NaCl
HBr
O2
NH3 - Answer: O2
Diatomic oxygen is made up of the same two elements, and they equally share the
4 electrons that make up the double bond between them. They're equally
electronegative, which means that there are not any partial charges for each
element. Since neither atom pulls harder, it's a non-polar covalent bond.
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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
,They will show no net change in behavior to the ammonium hydroxide.
They will all be instantly killed by the ammonium hydroxide.
They will eventually all swim away from the ammonium hydroxide. - Answer:
They will eventually all swim away from the ammonium hydroxide.
The organ that filters metabolic waste from the blood is the
small intestine.
liver.
kidney.
stomach. - Answer: kidney.
The process of nuclear cell division in the cell reproduction of plants differs from
mammals. A major difference is that
homologous chromosomes are paired.
centrioles are replicated.
spindle fibers are missing.
cell plates are synthesized. - Answer: homologous chromosomes are paired
In animals, the cell is split from the outside by a contractile ring, forming a
cleavage furrow. A layer of actin and myosin filaments underneath the plasma
membrane at the cell center begins to contract until the cell is essentially pinched
in half. In plants, a new cell wall forms inside the cell that grows outward until the
formation of two new cells. The assembly of a new cell wall forms by vesicles filled
with cellulose and lignin, which eventually fuse together to create a new cell wall,
and the parent cell splits in two.
Page 2 of 41
,Which of these conditions is associated with smoking?
Esophageal varices.
Tonsillitis.
Emphysema.
Blindness. - Answer: Emphysema.
Which of these equations best illustrates a synthesis reaction?
2Na + Cl2 -> 2NaCl
NaOH + HCl -> NaCl + H2O
2H2O2 -> 2H2O + O2
CH4 + 2O2 -> CO2 + 2H2O - Answer: 2Na + Cl2 -> 2NaCl
Which of these hydrocarbons is a member of the benzene family?
Toluene.
Ethyne.
Propanone.
Methanol. - Answer: Toluene.
Which of these particles can only be found in the nucleus of an atom?
protons, only.
electrons, only.
protons and neutrons.
neutrons and electrons. - Answer: protons and neutrons.
Page 3 of 41
, Which of these sequences of anatomic organization, from the simplest level to the
most complex, is the correct sequence?
From tissue, organ, organ system to organism.
From organ system, organ, tissue to organism.
From tissue, organ system, organ to organism.
From organ, organ system, tissue to organism. - Answer: From tissue, organ,
organ system to organism
Which of these single instruments may be used to measure the current flowing
through a circuit?
A voltmeter.
An ammeter.
A potentiometer.
An ohmmeter. - Answer: An ammeter.
Which of these substances contains a nonpolar covalent bond?
NaCl
HBr
O2
NH3 - Answer: O2
Diatomic oxygen is made up of the same two elements, and they equally share the
4 electrons that make up the double bond between them. They're equally
electronegative, which means that there are not any partial charges for each
element. Since neither atom pulls harder, it's a non-polar covalent bond.
Page 4 of 41
