1
NLN PAX SCIENCE PRACTICE TEST
QUESTIONS WITH VERIFIED ANSWERS |
LATEST UPDATE 2026
A person blows his breath into a straw that is placed in limewater. The limewater
becomes cloudy because the person's breath contains: - correct-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: - correct-
answer -ruptured platelets release thromboplastin
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? - correct-answer -the approximate focal length of the lens
In ecological succession, the first living thing to colonize a hitherto barren area is
called a: - correct-answer -pioneer organism
, 2
Unicellular organisms that have a nucleus and can swim with the aid of cilia are
examples of: - correct-answer -protozoans
Which of these conditions is associated with smoking? - correct-answer -
emphysema
Which of these quantities is most closely associated with an object's inertia? -
correct-answer -Mass
Which of these sequences of anatomic organization, from the simplest level to the
most complex, is the correct sequence? - correct-answer -From tissue, organ,
organ system to organism
Which part of the cell structure controls the passage of materials into and out of
the cell? - correct-answer -Plasma membrane
While working in the chemistry laboratory, a student spills dilute hydrochloric acid
on her hand. What is the first action this student should take? - correct-answer -
Flush her hand with large quantities of water
, 3
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 -
correct-answer -Diffusion
You cut your finger rather deeply while slicing an apple. Which of these actions
should you take first? - correct-answer -Wash the wound continuously with cold
running water
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: - correct-answer -variation within a species
A *tincture* is a solution in which: - correct-answer -alcohol is the solvent
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: - correct-
answer -active transport
NLN PAX SCIENCE PRACTICE TEST
QUESTIONS WITH VERIFIED ANSWERS |
LATEST UPDATE 2026
A person blows his breath into a straw that is placed in limewater. The limewater
becomes cloudy because the person's breath contains: - correct-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: - correct-
answer -ruptured platelets release thromboplastin
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? - correct-answer -the approximate focal length of the lens
In ecological succession, the first living thing to colonize a hitherto barren area is
called a: - correct-answer -pioneer organism
, 2
Unicellular organisms that have a nucleus and can swim with the aid of cilia are
examples of: - correct-answer -protozoans
Which of these conditions is associated with smoking? - correct-answer -
emphysema
Which of these quantities is most closely associated with an object's inertia? -
correct-answer -Mass
Which of these sequences of anatomic organization, from the simplest level to the
most complex, is the correct sequence? - correct-answer -From tissue, organ,
organ system to organism
Which part of the cell structure controls the passage of materials into and out of
the cell? - correct-answer -Plasma membrane
While working in the chemistry laboratory, a student spills dilute hydrochloric acid
on her hand. What is the first action this student should take? - correct-answer -
Flush her hand with large quantities of water
, 3
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 -
correct-answer -Diffusion
You cut your finger rather deeply while slicing an apple. Which of these actions
should you take first? - correct-answer -Wash the wound continuously with cold
running water
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: - correct-answer -variation within a species
A *tincture* is a solution in which: - correct-answer -alcohol is the solvent
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: - correct-
answer -active transport
