NLN PAX/NEX Science Study Exam | Nursing Entrance
Test Prep | Latest Update 2026 | Graded A+
1. Where in the circulatory system is the pressure of blood flow the highest?
capillaries
vena cava
venules
aorta
arterioles
2. Which type of light is known to emit electrons from a photosensitive surface?
Infrared light
Orange light
Green light
Ultraviolet light
3. Sodium and chlorine react to form sodium chloride because:
Neither sodium nor chlorine can form covalent bonds
Both sodium and chlorine are in the same horizontal row of the
Sodium is an alkali metal and chlorine is a diatomic gas
Both sodium and chlorine have odd atomic numbers
The transfer of one electron from the valence shell of sodium to the valence
shell of chlorine gives each a valence shell containing eight electrons
4. You would see tetrads during:
, metaphase II of meiosis
telophase I of meiosis
metaphase of mitosis
DNA replication
metaphase I of meiosis
5. Unidirectional valves that prevent the blood from flowing backwards are found in
which blood vessels?
Arterioles
Arteries
Veins
Capillaries
6. In which of the following cellular processes do homologous chromosomes pair up
to form tetrads?
mitosis
meiosis I
meiosis II
interphase
7. Which of the following produce seeds, but not fruit
ferns mosses
gymnosperms
angiosperms
,8. What term describes compounds that have the same molecular formula but differ
in the arrangement of atoms in space?
linkage isomers
optical isomers
geometrical isomers
structural isomers
9. If a different substance, such as a strong base, is introduced to the water
surrounding a hydra, what type of biological response might you expect, and why?
The hydra will swim away from the base.
The hydra may exhibit a similar withdrawal response due to the base acting as
a stimulus.
The hydra will likely become more aggressive and extend its tentacles.
The hydra will not respond at all to the base.
10. Why might researchers choose to focus specifically on male offspring in studies of
alcoholism's effects?
The effects of alcoholism are more pronounced in female offspring, making
them less relevant for this study.
Research shows that male offspring are less affected by alcoholism than
female offspring.
Male offspring are easier to study than female offspring due to their simpler
reproductive systems.
, Focusing on male offspring allows for a more controlled comparison with
existing human studies that often highlight malespecific outcomes.
11. Which organ is primarily responsible for filtering waste products from the
bloodstream?
kidney
liver
stomach
small intestine
12. Which of the following is the normal sequence for the flow if blood through the
heart lungs?
Right atrium, right ventricle, aorta, lungs, left atrium, left ventricle, pulmonary
artery, right atrium, right ventricle, aorta
Right atrium, right ventricle, pulmonary artery, lungs, pulmonary vein, left
atrium, left ventricle, aorta.
Right atrium, right ventricle, left atrium, left ventricle, pulmonary artery, lungs
and aorta.
Left atrium, left ventricle, pulmonary artery, lungs, pulmonary vein, right
ventricle, aorta.
13. If a population has a high incidence of goiter, what public health strategy could be
implemented to address this issue?
Encourage the consumption of fruits high in vitamin C.
Introduce iodized salt in the diet of the population.
Increase the intake of vitamin D-rich foods.
Promote regular exercise to improve overall health.
Test Prep | Latest Update 2026 | Graded A+
1. Where in the circulatory system is the pressure of blood flow the highest?
capillaries
vena cava
venules
aorta
arterioles
2. Which type of light is known to emit electrons from a photosensitive surface?
Infrared light
Orange light
Green light
Ultraviolet light
3. Sodium and chlorine react to form sodium chloride because:
Neither sodium nor chlorine can form covalent bonds
Both sodium and chlorine are in the same horizontal row of the
Sodium is an alkali metal and chlorine is a diatomic gas
Both sodium and chlorine have odd atomic numbers
The transfer of one electron from the valence shell of sodium to the valence
shell of chlorine gives each a valence shell containing eight electrons
4. You would see tetrads during:
, metaphase II of meiosis
telophase I of meiosis
metaphase of mitosis
DNA replication
metaphase I of meiosis
5. Unidirectional valves that prevent the blood from flowing backwards are found in
which blood vessels?
Arterioles
Arteries
Veins
Capillaries
6. In which of the following cellular processes do homologous chromosomes pair up
to form tetrads?
mitosis
meiosis I
meiosis II
interphase
7. Which of the following produce seeds, but not fruit
ferns mosses
gymnosperms
angiosperms
,8. What term describes compounds that have the same molecular formula but differ
in the arrangement of atoms in space?
linkage isomers
optical isomers
geometrical isomers
structural isomers
9. If a different substance, such as a strong base, is introduced to the water
surrounding a hydra, what type of biological response might you expect, and why?
The hydra will swim away from the base.
The hydra may exhibit a similar withdrawal response due to the base acting as
a stimulus.
The hydra will likely become more aggressive and extend its tentacles.
The hydra will not respond at all to the base.
10. Why might researchers choose to focus specifically on male offspring in studies of
alcoholism's effects?
The effects of alcoholism are more pronounced in female offspring, making
them less relevant for this study.
Research shows that male offspring are less affected by alcoholism than
female offspring.
Male offspring are easier to study than female offspring due to their simpler
reproductive systems.
, Focusing on male offspring allows for a more controlled comparison with
existing human studies that often highlight malespecific outcomes.
11. Which organ is primarily responsible for filtering waste products from the
bloodstream?
kidney
liver
stomach
small intestine
12. Which of the following is the normal sequence for the flow if blood through the
heart lungs?
Right atrium, right ventricle, aorta, lungs, left atrium, left ventricle, pulmonary
artery, right atrium, right ventricle, aorta
Right atrium, right ventricle, pulmonary artery, lungs, pulmonary vein, left
atrium, left ventricle, aorta.
Right atrium, right ventricle, left atrium, left ventricle, pulmonary artery, lungs
and aorta.
Left atrium, left ventricle, pulmonary artery, lungs, pulmonary vein, right
ventricle, aorta.
13. If a population has a high incidence of goiter, what public health strategy could be
implemented to address this issue?
Encourage the consumption of fruits high in vitamin C.
Introduce iodized salt in the diet of the population.
Increase the intake of vitamin D-rich foods.
Promote regular exercise to improve overall health.
