NLN Pax Science Practice Tests/ 161 Quizzes
with Certified Solutions.
A person blows his breath into a straw that is placed in limewater. The limewater becomes
cloudy because the person's breath contains: - ANSWER: carbon dioxide
A person who was in an auto accident has formed a blood clot at the site of the injury. One
event that can lead to formation of a blood clot is that: - ANSWER: ruptured platelets release
thromboplastin
Water freezes at 0C. On the Kelvin temperature scale, this is equivalent to: - ANSWER: 273K
To determine the optimum conditions for the activity of a digestive enzyme, it would be
necessary to test its activity over a range of: - ANSWER: temperature, pH and substrate
concentration
Page 1 of 18
,The Pap test can detect cancer in the female reproductive tract at an early stage, requiring cells
scraped from: - ANSWER: the cervix
The most probable area of study that would show the prevalence of mental illness in mid-
Manhattan is that: - ANSWER: epidemiology
The meiotic division of cells leads to the production of cells that: - ANSWER: contain half the
usual number of chromosomes
The full set of genes in an individual is known as: - ANSWER: the human genome
The boiling point of liquid nitrogen at one atmosphere pressure is 77 K. This temperature us
equivalent to: - ANSWER: neg196C
77K - 273K= 196C
Substance Y is soluble only in nonpolar solvents and does not conduct electricity, either in the
solid or liquid phases. Y is most probably - ANSWER: a nonpolar substance
Muscles are attached to bone by which of these structures? - ANSWER: Tendon
Coulomb's law is most closely associated with - ANSWER: electric charges
At room temperature, which of these substances exists as diatomic molecules? - ANSWER:
Oxygen
Amnesia in humans is a loss of memory. Which of these parts of the brain has been affected
when someone is suffering from amnesia caused by head trauma? - ANSWER: Cerebral cortex
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, A magician rapidly pulls a tablecloth from a table, leaving the dishes undisturbed. Which of
these principles of physics explains this "trick"? - ANSWER: Objects at rest tend to remain at
rest.
Which of these temperatures is known as Absolute Zero? - ANSWER: 0 K
Which of these substances contains a nonpolar covalent bond? - ANSWER: O2
Which of these single instruments may be used to measure the current flowing through a
circuit? - ANSWER: An ammeter
Which of these processes is responsible for the recorded production of CO2 by yeast cells from
sugar solution? - ANSWER: Anaerobic respiration
Which of these particles can only be found in the nucleus of an atom? - ANSWER: protons and
neutrons
Which of these pairs of units measures the same quantity
? - ANSWER: Calorie and joule
Which of these organisms use nitrogen directly from the air? - ANSWER: Blue-green algae
Which of these equations best illustrates a synthesis reaction? - ANSWER: 2Na + Cl2 -> 2NaCl
The organ that filters metabolic waste from the blood is the - ANSWER: kidney
Periodontitis is an inflammatory condition of the - ANSWER: gum tissue that surrounds the neck
of each tooth
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with Certified Solutions.
A person blows his breath into a straw that is placed in limewater. The limewater becomes
cloudy because the person's breath contains: - ANSWER: carbon dioxide
A person who was in an auto accident has formed a blood clot at the site of the injury. One
event that can lead to formation of a blood clot is that: - ANSWER: ruptured platelets release
thromboplastin
Water freezes at 0C. On the Kelvin temperature scale, this is equivalent to: - ANSWER: 273K
To determine the optimum conditions for the activity of a digestive enzyme, it would be
necessary to test its activity over a range of: - ANSWER: temperature, pH and substrate
concentration
Page 1 of 18
,The Pap test can detect cancer in the female reproductive tract at an early stage, requiring cells
scraped from: - ANSWER: the cervix
The most probable area of study that would show the prevalence of mental illness in mid-
Manhattan is that: - ANSWER: epidemiology
The meiotic division of cells leads to the production of cells that: - ANSWER: contain half the
usual number of chromosomes
The full set of genes in an individual is known as: - ANSWER: the human genome
The boiling point of liquid nitrogen at one atmosphere pressure is 77 K. This temperature us
equivalent to: - ANSWER: neg196C
77K - 273K= 196C
Substance Y is soluble only in nonpolar solvents and does not conduct electricity, either in the
solid or liquid phases. Y is most probably - ANSWER: a nonpolar substance
Muscles are attached to bone by which of these structures? - ANSWER: Tendon
Coulomb's law is most closely associated with - ANSWER: electric charges
At room temperature, which of these substances exists as diatomic molecules? - ANSWER:
Oxygen
Amnesia in humans is a loss of memory. Which of these parts of the brain has been affected
when someone is suffering from amnesia caused by head trauma? - ANSWER: Cerebral cortex
Page 2 of 18
, A magician rapidly pulls a tablecloth from a table, leaving the dishes undisturbed. Which of
these principles of physics explains this "trick"? - ANSWER: Objects at rest tend to remain at
rest.
Which of these temperatures is known as Absolute Zero? - ANSWER: 0 K
Which of these substances contains a nonpolar covalent bond? - ANSWER: O2
Which of these single instruments may be used to measure the current flowing through a
circuit? - ANSWER: An ammeter
Which of these processes is responsible for the recorded production of CO2 by yeast cells from
sugar solution? - ANSWER: Anaerobic respiration
Which of these particles can only be found in the nucleus of an atom? - ANSWER: protons and
neutrons
Which of these pairs of units measures the same quantity
? - ANSWER: Calorie and joule
Which of these organisms use nitrogen directly from the air? - ANSWER: Blue-green algae
Which of these equations best illustrates a synthesis reaction? - ANSWER: 2Na + Cl2 -> 2NaCl
The organ that filters metabolic waste from the blood is the - ANSWER: kidney
Periodontitis is an inflammatory condition of the - ANSWER: gum tissue that surrounds the neck
of each tooth
Page 3 of 18
