NLN PAX Science Exam Practice Questions & Answers
carbon dioxide
1. A person blows his breath into a straw that
is placed in limewater. The limewater becomes
cloudy because the person's breath contains:
2. A person who was in an auto accident has formed ruptured platelets release
a blood clot at the site of the injury. One event that thromboplastin
can lead to formation of a blood clot is that:
3. A student focuses sunlight to a point with a thin the approximate focal length of
converging (convex) lens. Which of these direct the lens
measurements can the student make as a result
of this experiment?
4. In ecological succession, the first living thing to pioneer organism
colonize a hitherto barren area is called a:
5. Unicellular organisms that have a nucleus and can protozoans
swim with the aid of cilia are examples of:
6. Which of these conditions is associated with smok- emphysema
ing?
7. Which of these quantities is most closely associat- Mass
, NLN PAX Science Exam Practice Questions & Answers
ed with an object's inertia?
8. Which of these sequences of anatomic organiza- From tissue, organ, organ sys-
tion, from the simplest level to the most complex, tem to organism
is the correct sequence?
9. Which part of the cell structure controls the pas- Plasma membrane
sage of materials into and out of the cell?
10. Flush her hand with large quan-
tities of water
, NLN PAX Science Exam Practice Questions & Answers
While working in the chemistry laboratory, a stu-
dent spills dilute hydrochloric acid on her hand.
What is the first action this student should take?
11. Within a living cell, the oxygen (O2) from a mix- Dittusion
ture 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
12. You cut your finger rather deeply while slicing Wash the wound continuously
an apple. Which of these actions should you take with cold running water
first?
13. 30 students in a class carefully measure the length variation within a species
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:
14. A *tincture* is a solution in which: alcohol is the solvent
15. All the glucose filtered from the blood in the active transport
glomerulus into the Bowman's capsule of the kid-
ney nephron is returned to the tissue fluid while
passing along the proximal tubule. This rapid re-
turn is effected by the process of:
16. If the night temperature drops 50 degrees, the 94°F
roadrunner's internal energy-conservation per-
mits a lowering of body temperature to:
, NLN PAX Science Exam Practice Questions & Answers
17. 1 kilogram (kg) of solid X at 10C and 1 kg of solid specific heat
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:F
18. A woman suddenly chokes on a piece of food and apply quick, hard pressures
clutches frantically at her throat. An immediate successively to her abdomen,
remedy is to: just below her diaphragm
19. An unknown gas is more dense than air, does not carbon dioxide
support combustion, and turns a limewater solu-
tion cloudy. This gas is most probably:
20. Night blindness in humans is caused by a lack of: Vitamin A
21. In varieties of matter, the term heterogeneous mixtures, but not elements or
may be applied to: compounds
22. The atoms of an element with seven valence elec- nonmetals
trons are most probably classified as:
23. The inherited factors that are transmitted in a or- genotype
ganism from generation to generation are called
its:
24. Which of these conditions is associated with smok- Emphysema
ing?
25. Within which of these structures of the female tein for export
reproductive tract is the human egg fertilized? would have an
abundance of
26. A cell which manufactures a large amount of pro- or- ganelles
carbon dioxide
1. A person blows his breath into a straw that
is placed in limewater. The limewater becomes
cloudy because the person's breath contains:
2. A person who was in an auto accident has formed ruptured platelets release
a blood clot at the site of the injury. One event that thromboplastin
can lead to formation of a blood clot is that:
3. A student focuses sunlight to a point with a thin the approximate focal length of
converging (convex) lens. Which of these direct the lens
measurements can the student make as a result
of this experiment?
4. In ecological succession, the first living thing to pioneer organism
colonize a hitherto barren area is called a:
5. Unicellular organisms that have a nucleus and can protozoans
swim with the aid of cilia are examples of:
6. Which of these conditions is associated with smok- emphysema
ing?
7. Which of these quantities is most closely associat- Mass
, NLN PAX Science Exam Practice Questions & Answers
ed with an object's inertia?
8. Which of these sequences of anatomic organiza- From tissue, organ, organ sys-
tion, from the simplest level to the most complex, tem to organism
is the correct sequence?
9. Which part of the cell structure controls the pas- Plasma membrane
sage of materials into and out of the cell?
10. Flush her hand with large quan-
tities of water
, NLN PAX Science Exam Practice Questions & Answers
While working in the chemistry laboratory, a stu-
dent spills dilute hydrochloric acid on her hand.
What is the first action this student should take?
11. Within a living cell, the oxygen (O2) from a mix- Dittusion
ture 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
12. You cut your finger rather deeply while slicing Wash the wound continuously
an apple. Which of these actions should you take with cold running water
first?
13. 30 students in a class carefully measure the length variation within a species
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:
14. A *tincture* is a solution in which: alcohol is the solvent
15. All the glucose filtered from the blood in the active transport
glomerulus into the Bowman's capsule of the kid-
ney nephron is returned to the tissue fluid while
passing along the proximal tubule. This rapid re-
turn is effected by the process of:
16. If the night temperature drops 50 degrees, the 94°F
roadrunner's internal energy-conservation per-
mits a lowering of body temperature to:
, NLN PAX Science Exam Practice Questions & Answers
17. 1 kilogram (kg) of solid X at 10C and 1 kg of solid specific heat
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:F
18. A woman suddenly chokes on a piece of food and apply quick, hard pressures
clutches frantically at her throat. An immediate successively to her abdomen,
remedy is to: just below her diaphragm
19. An unknown gas is more dense than air, does not carbon dioxide
support combustion, and turns a limewater solu-
tion cloudy. This gas is most probably:
20. Night blindness in humans is caused by a lack of: Vitamin A
21. In varieties of matter, the term heterogeneous mixtures, but not elements or
may be applied to: compounds
22. The atoms of an element with seven valence elec- nonmetals
trons are most probably classified as:
23. The inherited factors that are transmitted in a or- genotype
ganism from generation to generation are called
its:
24. Which of these conditions is associated with smok- Emphysema
ing?
25. Within which of these structures of the female tein for export
reproductive tract is the human egg fertilized? would have an
abundance of
26. A cell which manufactures a large amount of pro- or- ganelles
