PAX Science NLN Exam
1. A person blows his breath into a straw that is placed answer: carbon dioxide.
in limewater. The limewater becomes cloudy because
the person's breath contains
A.) carbon dioxide.
B.) hydrogen.
C.) oxygen.
D.) nitrogen.
2. A physician measures the pulse and blood pressure answer: 120/80 mm Hg
(BP) of all patients on a routine basis. Which of these
measurements show the normal BP values for a rest-
ing adult patient?
A.) 125/95 mm Hg
B.) 120/80 mm Hg
C.) 100/80 mm Hg
D.) 72/120 mm Hg
3. A woman suddenly chokes on a piece of food and answer: apply quick, hard
clutches frantically at her throat. An immediate rem- pressures successively to
edy is to her abdomen, just be-
neath her diaphragm.
A.) have her bend forward and tell her to cough.
B.) insert a finger or a blunt object toward the back of
the mouth.
C.) apply quick, hard pressures successively to her
abdomen, just beneath her diaphragm.
D.) phone "emergency" for help.
4. An unknown gas is more dense than air, does not answer: carbon dioxide.
support combustion, and turns a limewater solution
cloudy. This gas is most probably
, PAX Science NLN Exam
A.) ammonia.
B.) methane.
C.) carbon dioxide.
C.) hydrogen.
5. Human testes produce answer: spermatozoa.
A.) eggs.
B.) follicle stimulating hormone.
C.) growth hormone.
D.) spermatozoa.
6. If a red light is passed through a dilute solution of answer: 50 - 75%
chlorophyll solution, the spectrophotometer will de-
tect what amount of transmittance of this light?
A.) 100%
B.) 50 - 75%
C.) Less than 25%
D.) None
7. In diagnostic testing, the electroencephalogram per- answer: examine the im-
mits the physician to pulses of the nerve cells
within the brain.
A.) examine the impulses of the specialized muscle
cells of the heart.
B.) examine the impulses of the nerve cells within the
brain.
C.) measure the pressure within the eye.
D.) measure the amount of air upon exhalation.
8.
, PAX Science NLN Exam
To sterilize a metal probe in the office, a dentist could answer: boiling it in water
use a steam sterilizer. If unavailable, the next most for 15 minutes.
effective method to sterilize the instrument would be
A.) boiling it in water for 15 minutes.
B.) dipping it into a concentrated acid solution.
C.) heating it in a hot air oven at 160°C for 20 minutes.
D.) washing it in soap and water.
9. In varieties of matter, the term heterogeneous may be answer: mixtures, but not
applied to elements or compounds.
A.) elements, but not compounds.
B.) compounds, but not elements.
C.) compounds and elements, but not mixtures.
D.) mixtures, but not elements or compounds.
10. Heat energy is absorbed in which of these phase answer: Br2 (l) -> Br2(g)
changes?
A.) Br2 (l) -> Br2(s)
B.) Br2 (g) --> Br2(l)
C.) Br2 (l) -> Br2(g)
D.) Br2 (g) -> Br2(s)
11. Periodontitis is an inflammatory condition of the answer: gum tissue that
surrounds the neck of
A.) gum tissue that surrounds the neck of each tooth. each tooth.
B.) pulp that contains nerve cells and blood vessels of
the tooth.
C.) dentin that surrounds the soft part of a tooth.
D.) enamel that provides a hard surface for chewing.
, PAX Science NLN Exam
12. The atoms of an element with seven valence electrons answer: nonmetals.
are most probably classified as
A.) metals.
B.) nonmetals.
C.) metalloids.
D.) noble gases.
13. The inherited factors that are transmitted in an organ- answer: genotype.
ism from generation to generation are called its
A.) homozygote.
B.) heterozygote.
C.) genotype.
D.) phenotype.
14. The process of nuclear cell division in the cell repro- answer: cell plates are
duction of plants differs from mammals. A major dif- synthesized.
ference is that
A.) homologous chromosomes are paired.
B.) centrioles are replicated.
C.) spindle fibers are missing.
D.) cell plates are synthesized.
15. Unicellular organisms that have a nucleus and can answer: protozoans.
swim with the aid of cilia are examples of
A.) monerans.
B.) plants.
C.) fungi.
D.) protozoans.
1. A person blows his breath into a straw that is placed answer: carbon dioxide.
in limewater. The limewater becomes cloudy because
the person's breath contains
A.) carbon dioxide.
B.) hydrogen.
C.) oxygen.
D.) nitrogen.
2. A physician measures the pulse and blood pressure answer: 120/80 mm Hg
(BP) of all patients on a routine basis. Which of these
measurements show the normal BP values for a rest-
ing adult patient?
A.) 125/95 mm Hg
B.) 120/80 mm Hg
C.) 100/80 mm Hg
D.) 72/120 mm Hg
3. A woman suddenly chokes on a piece of food and answer: apply quick, hard
clutches frantically at her throat. An immediate rem- pressures successively to
edy is to her abdomen, just be-
neath her diaphragm.
A.) have her bend forward and tell her to cough.
B.) insert a finger or a blunt object toward the back of
the mouth.
C.) apply quick, hard pressures successively to her
abdomen, just beneath her diaphragm.
D.) phone "emergency" for help.
4. An unknown gas is more dense than air, does not answer: carbon dioxide.
support combustion, and turns a limewater solution
cloudy. This gas is most probably
, PAX Science NLN Exam
A.) ammonia.
B.) methane.
C.) carbon dioxide.
C.) hydrogen.
5. Human testes produce answer: spermatozoa.
A.) eggs.
B.) follicle stimulating hormone.
C.) growth hormone.
D.) spermatozoa.
6. If a red light is passed through a dilute solution of answer: 50 - 75%
chlorophyll solution, the spectrophotometer will de-
tect what amount of transmittance of this light?
A.) 100%
B.) 50 - 75%
C.) Less than 25%
D.) None
7. In diagnostic testing, the electroencephalogram per- answer: examine the im-
mits the physician to pulses of the nerve cells
within the brain.
A.) examine the impulses of the specialized muscle
cells of the heart.
B.) examine the impulses of the nerve cells within the
brain.
C.) measure the pressure within the eye.
D.) measure the amount of air upon exhalation.
8.
, PAX Science NLN Exam
To sterilize a metal probe in the office, a dentist could answer: boiling it in water
use a steam sterilizer. If unavailable, the next most for 15 minutes.
effective method to sterilize the instrument would be
A.) boiling it in water for 15 minutes.
B.) dipping it into a concentrated acid solution.
C.) heating it in a hot air oven at 160°C for 20 minutes.
D.) washing it in soap and water.
9. In varieties of matter, the term heterogeneous may be answer: mixtures, but not
applied to elements or compounds.
A.) elements, but not compounds.
B.) compounds, but not elements.
C.) compounds and elements, but not mixtures.
D.) mixtures, but not elements or compounds.
10. Heat energy is absorbed in which of these phase answer: Br2 (l) -> Br2(g)
changes?
A.) Br2 (l) -> Br2(s)
B.) Br2 (g) --> Br2(l)
C.) Br2 (l) -> Br2(g)
D.) Br2 (g) -> Br2(s)
11. Periodontitis is an inflammatory condition of the answer: gum tissue that
surrounds the neck of
A.) gum tissue that surrounds the neck of each tooth. each tooth.
B.) pulp that contains nerve cells and blood vessels of
the tooth.
C.) dentin that surrounds the soft part of a tooth.
D.) enamel that provides a hard surface for chewing.
, PAX Science NLN Exam
12. The atoms of an element with seven valence electrons answer: nonmetals.
are most probably classified as
A.) metals.
B.) nonmetals.
C.) metalloids.
D.) noble gases.
13. The inherited factors that are transmitted in an organ- answer: genotype.
ism from generation to generation are called its
A.) homozygote.
B.) heterozygote.
C.) genotype.
D.) phenotype.
14. The process of nuclear cell division in the cell repro- answer: cell plates are
duction of plants differs from mammals. A major dif- synthesized.
ference is that
A.) homologous chromosomes are paired.
B.) centrioles are replicated.
C.) spindle fibers are missing.
D.) cell plates are synthesized.
15. Unicellular organisms that have a nucleus and can answer: protozoans.
swim with the aid of cilia are examples of
A.) monerans.
B.) plants.
C.) fungi.
D.) protozoans.
