PAX Science NLN Exam Questions With Correct
Answers
A person blows his breath into a straw that is placed in limewater. The limewater
| | | | | | | | | | | | | | |
becomes cloudy because the person's breath contains
| | | | | |
A.) carbon dioxide.
| |
B.) hydrogen.
|
C.) oxygen.
|
D.) 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?
| |
A.) 125/95 mm Hg
| | |
B.) 120/80 mm Hg
| | |
C.) 100/80 mm Hg
| | |
D.) 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
| | | | |
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.
| | | |
answer: apply quick, hard pressures successively to her 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
| | | | | | | |
A.) ammonia.
|
B.) methane.
|
C.) carbon dioxide.
| |
C.) hydrogen.
|
answer: carbon dioxide. | |
Human testes produce | |
A.) eggs.|
B.) follicle stimulating hormone.
| | |
C.) growth hormone.
| |
D.) 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%
| | |
C.) Less than 25%
| | |
D.) None |
answer: 50 - 75% | | |
In diagnostic testing, the electroencephalogram permits the physician to
| | | | | | | |
,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.
| | | | | | |
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
| | | | | | | | | | |
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.
| | | | | |
answer: boiling it in water for 15 minutes.
| | | | | | |
In varieties of matter, the term heterogeneous may be applied to
| | | | | | | | | |
A.) elements, but not compounds.
| | | |
B.) compounds, but not elements.
| | | |
C.) compounds and elements, but not mixtures.
| | | | | |
D.) mixtures, but not elements or compounds.
| | | | | |
answer: mixtures, but not elements or compounds.
| | | | | |
Heat energy is absorbed in which of these phase changes?
| | | | | | | | |
A.) Br2 (l) -> Br2(s)
| | | |
B.) Br2 (g) --> Br2(l)
| | | |
C.) Br2 (l) -> Br2(g)
| | | |
D.) Br2 (g) -> Br2(s)
| | | |
answer: Br2 (l) -> Br2(g)
| | | |
, Periodontitis is an inflammatory condition of the
| | | | | |
A.) gum tissue that surrounds the neck of 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.
| | | | | | | |
answer: gum tissue that surrounds the neck of each tooth.
| | | | | | | | |
The atoms of an element with seven valence electrons are most probably
| | | | | | | | | | | |
classified as |
A.) metals.
|
B.) nonmetals.
|
C.) metalloids.
|
D.) noble gases.
| |
answer: nonmetals.
| |
The inherited factors that are transmitted in an organism from generation to
| | | | | | | | | | | |
generation are called its
| | |
A.) homozygote.
|
B.) heterozygote.
|
C.) genotype.
|
D.) phenotype.
|
answer: genotype.
|
The process of nuclear cell division in the cell reproduction of plants differs from
| | | | | | | | | | | | | |
mammals. A major difference is that
| | | | |
A.) homologous chromosomes are paired.
| | | |
B.) centrioles are replicated.
| | |
Answers
A person blows his breath into a straw that is placed in limewater. The limewater
| | | | | | | | | | | | | | |
becomes cloudy because the person's breath contains
| | | | | |
A.) carbon dioxide.
| |
B.) hydrogen.
|
C.) oxygen.
|
D.) 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?
| |
A.) 125/95 mm Hg
| | |
B.) 120/80 mm Hg
| | |
C.) 100/80 mm Hg
| | |
D.) 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
| | | | |
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.
| | | |
answer: apply quick, hard pressures successively to her 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
| | | | | | | |
A.) ammonia.
|
B.) methane.
|
C.) carbon dioxide.
| |
C.) hydrogen.
|
answer: carbon dioxide. | |
Human testes produce | |
A.) eggs.|
B.) follicle stimulating hormone.
| | |
C.) growth hormone.
| |
D.) 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%
| | |
C.) Less than 25%
| | |
D.) None |
answer: 50 - 75% | | |
In diagnostic testing, the electroencephalogram permits the physician to
| | | | | | | |
,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.
| | | | | | |
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
| | | | | | | | | | |
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.
| | | | | |
answer: boiling it in water for 15 minutes.
| | | | | | |
In varieties of matter, the term heterogeneous may be applied to
| | | | | | | | | |
A.) elements, but not compounds.
| | | |
B.) compounds, but not elements.
| | | |
C.) compounds and elements, but not mixtures.
| | | | | |
D.) mixtures, but not elements or compounds.
| | | | | |
answer: mixtures, but not elements or compounds.
| | | | | |
Heat energy is absorbed in which of these phase changes?
| | | | | | | | |
A.) Br2 (l) -> Br2(s)
| | | |
B.) Br2 (g) --> Br2(l)
| | | |
C.) Br2 (l) -> Br2(g)
| | | |
D.) Br2 (g) -> Br2(s)
| | | |
answer: Br2 (l) -> Br2(g)
| | | |
, Periodontitis is an inflammatory condition of the
| | | | | |
A.) gum tissue that surrounds the neck of 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.
| | | | | | | |
answer: gum tissue that surrounds the neck of each tooth.
| | | | | | | | |
The atoms of an element with seven valence electrons are most probably
| | | | | | | | | | | |
classified as |
A.) metals.
|
B.) nonmetals.
|
C.) metalloids.
|
D.) noble gases.
| |
answer: nonmetals.
| |
The inherited factors that are transmitted in an organism from generation to
| | | | | | | | | | | |
generation are called its
| | |
A.) homozygote.
|
B.) heterozygote.
|
C.) genotype.
|
D.) phenotype.
|
answer: genotype.
|
The process of nuclear cell division in the cell reproduction of plants differs from
| | | | | | | | | | | | | |
mammals. A major difference is that
| | | | |
A.) homologous chromosomes are paired.
| | | |
B.) centrioles are replicated.
| | |
