PAX SCIENCE NLM EXAM 2024 ACTUAL EXAM
QUESTIONS WITH DETAILED VERIFIED
ANSWERS/A+ GRADE ASSURED
A person blows his breath into a straw that is placed in limewater. The limewater becomes
cloudy because the person's breath contains
• carbon dioxide.
• hydrogen.
• oxygen.
• nitrogen. - answer: carbon dioxide.
A physician measures the pulse and blood pressure (BP) of all patients on a routine basis.
Which of these measurements show the normal BP values for a resting adult patient?
• 125/95 mm Hg
• 120/80 mm Hg
• 100/80 mm Hg
• 72/120 mm Hg - answer: 120/80 mm Hg
A woman suddenly chokes on a piece of food and clutches frantically at her throat. An
immediate remedy is to
• have her bend forward and tell her to cough.
• insert a finger or a blunt object toward the back of the mouth.
abdomen, just beneath her diaphragm.
An unknown gas is more dense than air, does not support combustion, and turns a
limewater solution cloudy. This gas is most probably
• ammonia.
• methane.
• carbon dioxide.
C.) hydrogen. - answer: carbon dioxide.
Human testes produce
,• eggs.
• follicle stimulating hormone.
• growth hormone.
• spermatozoa. - answer: spermatozoa.
If a red light is passed through a dilute solution of chlorophyll solution, the
spectrophotometer will detect what amount of transmittance of this light?
A.) 100%
B.) 50 - 75%
• Less than 25%
• None - answer: 50 - 75%
In diagnostic testing, the electroencephalogram permits the physician to
• examine the impulses of the specialized muscle cells of the heart.
• examine the impulses of the nerve cells within the brain.
• measure the pressure within the eye.
• measure the amount of air upon exhalation. - answer: examine the impulses of
the nerve cells within the brain.
To sterilize a metal probe in the office, a dentist could use a steam sterilizer. If
unavailable, the next most effective method to sterilize the instrument would be
• boiling it in water for 15 minutes.
• dipping it into a concentrated acid solution.
• heating it in a hot air oven at 160°C for 20 minutes.
• washing it in soap and water. - answer: boiling it in water for 15
minutes. In varieties of matter, the term heterogeneous may be applied to
• elements, but not compounds.
• compounds, but not elements.
• compounds and elements, but not mixtures.
• mixtures, but not elements or compounds. - answer: mixtures, but not elements
or compounds.
Heat energy is absorbed in which of these phase changes?
• Br2 (l) -> Br2(s)
• Br2 (g) --> Br2(l)
• Br2 (l) -> Br2(g)
,• Br2 (g) -> Br2(s) - answer: Br2 (l) -> Br2(g)
Periodontitis is an inflammatory condition of the
• gum tissue that surrounds the neck of each tooth.
• pulp that contains nerve cells and blood vessels of the tooth.
• dentin that surrounds the soft part of a tooth.
• enamel that provides a hard surface for chewing. - answer: gum tissue that
surrounds the neck of each tooth.
The atoms of an element with seven valence electrons are most probably classified as
• metals.
• nonmetals.
• metalloids.
• noble gases. - answer: nonmetals.
The inherited factors that are transmitted in an organism from generation to generation
are called its
• homozygote.
• heterozygote.
• genotype.
• phenotype. - answer: genotype.
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: cell plates are synthesized.
Unicellular organisms that have a nucleus and can swim with the aid of cilia are
examples of
• monerans.
• plants.
• fungi.
• protozoans. - answer: protozoans.
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 quantities is most closely associated with an object's inertia?
• Weight.
• Energy.
• Power.
• Mass. - answer: Mass
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.
QUESTIONS WITH DETAILED VERIFIED
ANSWERS/A+ GRADE ASSURED
A person blows his breath into a straw that is placed in limewater. The limewater becomes
cloudy because the person's breath contains
• carbon dioxide.
• hydrogen.
• oxygen.
• nitrogen. - answer: carbon dioxide.
A physician measures the pulse and blood pressure (BP) of all patients on a routine basis.
Which of these measurements show the normal BP values for a resting adult patient?
• 125/95 mm Hg
• 120/80 mm Hg
• 100/80 mm Hg
• 72/120 mm Hg - answer: 120/80 mm Hg
A woman suddenly chokes on a piece of food and clutches frantically at her throat. An
immediate remedy is to
• have her bend forward and tell her to cough.
• insert a finger or a blunt object toward the back of the mouth.
abdomen, just beneath her diaphragm.
An unknown gas is more dense than air, does not support combustion, and turns a
limewater solution cloudy. This gas is most probably
• ammonia.
• methane.
• carbon dioxide.
C.) hydrogen. - answer: carbon dioxide.
Human testes produce
,• eggs.
• follicle stimulating hormone.
• growth hormone.
• spermatozoa. - answer: spermatozoa.
If a red light is passed through a dilute solution of chlorophyll solution, the
spectrophotometer will detect what amount of transmittance of this light?
A.) 100%
B.) 50 - 75%
• Less than 25%
• None - answer: 50 - 75%
In diagnostic testing, the electroencephalogram permits the physician to
• examine the impulses of the specialized muscle cells of the heart.
• examine the impulses of the nerve cells within the brain.
• measure the pressure within the eye.
• measure the amount of air upon exhalation. - answer: examine the impulses of
the nerve cells within the brain.
To sterilize a metal probe in the office, a dentist could use a steam sterilizer. If
unavailable, the next most effective method to sterilize the instrument would be
• boiling it in water for 15 minutes.
• dipping it into a concentrated acid solution.
• heating it in a hot air oven at 160°C for 20 minutes.
• washing it in soap and water. - answer: boiling it in water for 15
minutes. In varieties of matter, the term heterogeneous may be applied to
• elements, but not compounds.
• compounds, but not elements.
• compounds and elements, but not mixtures.
• mixtures, but not elements or compounds. - answer: mixtures, but not elements
or compounds.
Heat energy is absorbed in which of these phase changes?
• Br2 (l) -> Br2(s)
• Br2 (g) --> Br2(l)
• Br2 (l) -> Br2(g)
,• Br2 (g) -> Br2(s) - answer: Br2 (l) -> Br2(g)
Periodontitis is an inflammatory condition of the
• gum tissue that surrounds the neck of each tooth.
• pulp that contains nerve cells and blood vessels of the tooth.
• dentin that surrounds the soft part of a tooth.
• enamel that provides a hard surface for chewing. - answer: gum tissue that
surrounds the neck of each tooth.
The atoms of an element with seven valence electrons are most probably classified as
• metals.
• nonmetals.
• metalloids.
• noble gases. - answer: nonmetals.
The inherited factors that are transmitted in an organism from generation to generation
are called its
• homozygote.
• heterozygote.
• genotype.
• phenotype. - answer: genotype.
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: cell plates are synthesized.
Unicellular organisms that have a nucleus and can swim with the aid of cilia are
examples of
• monerans.
• plants.
• fungi.
• protozoans. - answer: protozoans.
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 quantities is most closely associated with an object's inertia?
• Weight.
• Energy.
• Power.
• Mass. - answer: Mass
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.
