NLN PAX/NEX SCIENCE STUDY EXAM
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 - Answers - specific heat
A method for determining the blood alcohol content of a subject is to
do a mantoux test
do a D-dimer test
use a breathalyzer
inspect the size of the pupils - Answers - use a breathalyzer
A person who was in an auto accident has formed a blood clot at the site of injury. one
event that can lead to formation of a blood clot is that
red blood cells release hemoglobin
white blood cells release antibodies
bone marrow cells release platelet production
ruptured platelets release thromboplastin - Answers - ruptured platelets release
thromboplastin
A physician measures the pulse and blood pressure 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
100/80 mm Hg
120/80 mm Hg
72/120 mm Hg - Answers - 120/80 mm Hg
A student focuses sunlight to a point with a thin converging (convex) lens. Which of
these direct measurements can the student make as a result of this experiment
The approximate wavelength of the light used
The approximate speed of the light
The approximate focal length of the lens
The approximate index of refraction of the lens material - Answers - the approximate
focal length of the lens
A women 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
apply, quick, hard pressure successively to her abdomen, just beneath her diaphragm
phone emergency for help - Answers - apply, quick, hard pressure 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
methane
ammonia
carbon dioxide
hydrogen - Answers - carbon dioxide
Guard cells which can be found in the leaves of plants are closely associated with which
of these processes
reproduction of a new plant
evaporation of water from the plant
movement of organic and inorganic substances from soil to the plant
synthesis of organic substances in the plant - Answers - evaporation of water from the
plant
If the medulla of the brain in a human was damaged, which of these conditions would
most likely result?
inability to remember
difficulty in breathing
inability to speak
blurred vision - Answers - difficulty in breathing
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 - Answers - boiling it in water for 15 minutes
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) - Answers - Br2 (l) -> Br2 (g)
, The atoms of an element with seven valence electrons are most classified as
metals
nonmetals
metalloids
noble gas - Answers - non metals
The organ that filters metabolic waste from the blood is the
kidney
liver
small intestine
stomach - Answers - kidney
Which of these conditions is associated with smoking
esophageal varices
tonsillitis
emphysema
blindness - Answers - emphysema
Which of these equations best illustrates a synthesis reaction?
NaOH + HCl -> NaCl + H2O
2Na +Cl2 -> 2NaCl
2H2O2 -> 2H2O + O2
CH4 + 2O2 -> CO2 + 2H2O - Answers - 2Na + Cl2 -> 2NaCl
Which of these pairs of units measures the same quantity?
Newton and watt
Joule and Newton
Calorie and Joule
Watt and Calorie - Answers - Calorie and Joule
Which of these processes is responsible for the recorded production of CO2 by yeast
cells from sugar solution
photosynthesis
Anaerobic respiration
Translocation
Capillary action - Answers - Anaerobic respiration
Which of these quantities is most closely associated with an object's inertia?
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 - Answers - specific heat
A method for determining the blood alcohol content of a subject is to
do a mantoux test
do a D-dimer test
use a breathalyzer
inspect the size of the pupils - Answers - use a breathalyzer
A person who was in an auto accident has formed a blood clot at the site of injury. one
event that can lead to formation of a blood clot is that
red blood cells release hemoglobin
white blood cells release antibodies
bone marrow cells release platelet production
ruptured platelets release thromboplastin - Answers - ruptured platelets release
thromboplastin
A physician measures the pulse and blood pressure 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
100/80 mm Hg
120/80 mm Hg
72/120 mm Hg - Answers - 120/80 mm Hg
A student focuses sunlight to a point with a thin converging (convex) lens. Which of
these direct measurements can the student make as a result of this experiment
The approximate wavelength of the light used
The approximate speed of the light
The approximate focal length of the lens
The approximate index of refraction of the lens material - Answers - the approximate
focal length of the lens
A women 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
apply, quick, hard pressure successively to her abdomen, just beneath her diaphragm
phone emergency for help - Answers - apply, quick, hard pressure 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
methane
ammonia
carbon dioxide
hydrogen - Answers - carbon dioxide
Guard cells which can be found in the leaves of plants are closely associated with which
of these processes
reproduction of a new plant
evaporation of water from the plant
movement of organic and inorganic substances from soil to the plant
synthesis of organic substances in the plant - Answers - evaporation of water from the
plant
If the medulla of the brain in a human was damaged, which of these conditions would
most likely result?
inability to remember
difficulty in breathing
inability to speak
blurred vision - Answers - difficulty in breathing
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 - Answers - boiling it in water for 15 minutes
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) - Answers - Br2 (l) -> Br2 (g)
, The atoms of an element with seven valence electrons are most classified as
metals
nonmetals
metalloids
noble gas - Answers - non metals
The organ that filters metabolic waste from the blood is the
kidney
liver
small intestine
stomach - Answers - kidney
Which of these conditions is associated with smoking
esophageal varices
tonsillitis
emphysema
blindness - Answers - emphysema
Which of these equations best illustrates a synthesis reaction?
NaOH + HCl -> NaCl + H2O
2Na +Cl2 -> 2NaCl
2H2O2 -> 2H2O + O2
CH4 + 2O2 -> CO2 + 2H2O - Answers - 2Na + Cl2 -> 2NaCl
Which of these pairs of units measures the same quantity?
Newton and watt
Joule and Newton
Calorie and Joule
Watt and Calorie - Answers - Calorie and Joule
Which of these processes is responsible for the recorded production of CO2 by yeast
cells from sugar solution
photosynthesis
Anaerobic respiration
Translocation
Capillary action - Answers - Anaerobic respiration
Which of these quantities is most closely associated with an object's inertia?
