NLN Pax Science practice tests 100% Verified Questions &
Answers
Q: 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
Q: 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
Q: 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?
Answer:
the approximate focal length of the lens
Q: In ecological succession, the first living thing to colonize a hitherto barren area is called a
Answer:
- pioneer organism
Q: Unicellular organisms that have a nucleus and can swim with the aid of cilia are examples of
Answer:
- protozoans
Q: Which of these conditions is associated with smoking?
Answer:
emphysema
Q: Which of these quantities is most closely associated with an object's inertia?
Answer:
Mass
Q: Which of these sequences of anatomic organization, from the simplest level to the most complex, is the correct
sequence?
Answer:
From tissue, organ, organ system to organism
Q: Which part of the cell structure controls the passage of materials into and out of the cell?
,Answer:
Plasma membrane
Q: While working in the chemistry laboratory, a student spills dilute hydrochloric acid on her hand. What is the first
action this student should take?
Answer:
Flush her hand with large quantities of water
Q: Within a living cell, the oxygen (O2) from a mixture of O2 and carbon dioxide (CO2) is used up. This creates a
concentration gradient across the cell membrane, drawing O2 across the membrane from the outside in, a process known
as
Answer:
Diffusion
Q: You cut your finger rather deeply while slicing an apple. Which of these actions should you take first?
Answer:
Wash the wound continuously with cold running water
Q: 30 students in a class carefully measure the length and width of 20 peanut shells. They also count the number and note
the size of the peanuts inside. This information is recorded on various graphs showing the numbers of nuts and the
different sizes. The collected evidence of the peanuts gives the students an idea of the extent of
Answer:
- variation within a species
Q: A *tincture* is a solution in which
Answer:
- alcohol is the solvent
Q: All the glucose filtered from the blood in the glomerulus into the Bowman's capsule of the kidney nephron is returned
to the tissue fluid while passing along the proximal tubule. This rapid return is effected by the process of: - active tr
Answer:
port
Q: If the night temperature drops 50 degrees, the roadrunner's internal energy-conservation permits a lowering of body
temperature to
Answer:
- 94°F
Q: 1 kilogram (kg) of solid X at 10C and 1 kg of solid Y 10C each absorb 5 joules of heat energy. The final temperatures
on X and Y is 15C and 20C, respectively. Compared to X, Y must have a lower
Answer:
F - specific heat
, Q: A woman suddenly chokes on a piece of food and clutches frantically at her throat. An immediate remedy is to
Answer:
- apply quick, hard pressures successively to her abdomen, just below her diaphragm
Q: An unknown gas is more dense than air, does not support combustion, and turns a limewater solution cloudy. This gas
is most probably
Answer:
- carbon dioxide
Q: Night blindness in hum
Answer:
is caused by a lack of: - Vitamin A
Q: In varieties of matter, the term heterogeneous may be applied to
Answer:
- mixtures, but not elements or compounds
Q: The atoms of an element with seven valence electrons are most probably classified as
Answer:
- nonmetals
Q: The inherited factors that are tr
Answer:
mitted in a organism from generation to generation are called its: - genotype
Q: Which of these conditions is associated with smoking?
Answer:
Emphysema
Q: Within which of these structures of the female reproductive tract is the human egg fertilized?
Answer:
Fallopian tube
Q: A cell which manufactures a large amount of protein for export would have an abundance of organelles called
Answer:
- ribosomes
Q: A lens that focuses distant light to a single point is known as a
Answer:
Answers
Q: 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
Q: 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
Q: 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?
Answer:
the approximate focal length of the lens
Q: In ecological succession, the first living thing to colonize a hitherto barren area is called a
Answer:
- pioneer organism
Q: Unicellular organisms that have a nucleus and can swim with the aid of cilia are examples of
Answer:
- protozoans
Q: Which of these conditions is associated with smoking?
Answer:
emphysema
Q: Which of these quantities is most closely associated with an object's inertia?
Answer:
Mass
Q: Which of these sequences of anatomic organization, from the simplest level to the most complex, is the correct
sequence?
Answer:
From tissue, organ, organ system to organism
Q: Which part of the cell structure controls the passage of materials into and out of the cell?
,Answer:
Plasma membrane
Q: While working in the chemistry laboratory, a student spills dilute hydrochloric acid on her hand. What is the first
action this student should take?
Answer:
Flush her hand with large quantities of water
Q: Within a living cell, the oxygen (O2) from a mixture of O2 and carbon dioxide (CO2) is used up. This creates a
concentration gradient across the cell membrane, drawing O2 across the membrane from the outside in, a process known
as
Answer:
Diffusion
Q: You cut your finger rather deeply while slicing an apple. Which of these actions should you take first?
Answer:
Wash the wound continuously with cold running water
Q: 30 students in a class carefully measure the length and width of 20 peanut shells. They also count the number and note
the size of the peanuts inside. This information is recorded on various graphs showing the numbers of nuts and the
different sizes. The collected evidence of the peanuts gives the students an idea of the extent of
Answer:
- variation within a species
Q: A *tincture* is a solution in which
Answer:
- alcohol is the solvent
Q: All the glucose filtered from the blood in the glomerulus into the Bowman's capsule of the kidney nephron is returned
to the tissue fluid while passing along the proximal tubule. This rapid return is effected by the process of: - active tr
Answer:
port
Q: If the night temperature drops 50 degrees, the roadrunner's internal energy-conservation permits a lowering of body
temperature to
Answer:
- 94°F
Q: 1 kilogram (kg) of solid X at 10C and 1 kg of solid Y 10C each absorb 5 joules of heat energy. The final temperatures
on X and Y is 15C and 20C, respectively. Compared to X, Y must have a lower
Answer:
F - specific heat
, Q: A woman suddenly chokes on a piece of food and clutches frantically at her throat. An immediate remedy is to
Answer:
- apply quick, hard pressures successively to her abdomen, just below her diaphragm
Q: An unknown gas is more dense than air, does not support combustion, and turns a limewater solution cloudy. This gas
is most probably
Answer:
- carbon dioxide
Q: Night blindness in hum
Answer:
is caused by a lack of: - Vitamin A
Q: In varieties of matter, the term heterogeneous may be applied to
Answer:
- mixtures, but not elements or compounds
Q: The atoms of an element with seven valence electrons are most probably classified as
Answer:
- nonmetals
Q: The inherited factors that are tr
Answer:
mitted in a organism from generation to generation are called its: - genotype
Q: Which of these conditions is associated with smoking?
Answer:
Emphysema
Q: Within which of these structures of the female reproductive tract is the human egg fertilized?
Answer:
Fallopian tube
Q: A cell which manufactures a large amount of protein for export would have an abundance of organelles called
Answer:
- ribosomes
Q: A lens that focuses distant light to a single point is known as a
Answer:
