NLN NEX - SCIENCE QUESTIONS & DETAILED
COMPLETE ANSWERS RATED 100% CORRECT
1. Fibrous tunic In the diagram, the area labeled 2 is part of which layer of the eye
Fibrous
tunic
Sensory
tunic
Reticular
tunic
Vascular
tunic
2. Sympathetic After playing a strenuous tennis match, a player experiences
nervous system increased heart rate, rapid breathing, and dilated pupils.
Which branch of the nervous system is responsible for these
responses?
Autonomic nervous
system Central nervous
system Sympathetic
nervous system
Parasympathetic nervous
system
3. Cerebral Cortex Amnesia in humans is the loss of memory. Which of these parts of
the
brain has been affected when someone is suffering from
amnesia caused by head trauma?
Medulla
oblongata
,NLN NEX - SCIENCE QUESTIONS & DETAILED
COMPLETE ANSWERS RATED 100% CORRECT
Spinal Cord
Cerebellum
Cerebral
Cortex
4. Gastronemius If a person cannot stand on tiptoes, which muscles may be too
and soleus weak?
Rectus femoris and vastus medialis
,NLN NEX - SCIENCE QUESTIONS & DETAILED
COMPLETE ANSWERS RATED 100% CORRECT
Pectoralis major and
subclavius Gastronemius
and soleus
Biceps femoris and semimembranosus
5. Is where most of
the cell's All living cells contain cytoplasm, which is important b/c it...
chemical reac-
tions take place Carries hereditary traits
Produces protein
Is where most of the cell's chemical reactions take place
Controls what moves in and out of the cell
6. Fewer cones and a Most vertebrates have cone cells in their eyes, which
greater distinguish colors in daylight. The rods are more sensitive to
concentration of light, but do not distinguish colors. If a mammal is nocturnal, it
rods to collect the has likely evolved to have...
minimal light for
night vision. As many cones as there are rods to capture the colors at dusk/daw
An absence of cones since nocturnal mammals only need rods
to see black/white at night
Fewer cones and a greater concentration of rods to collect the
minimal light for night vision.
More cones than rods to enable them to see the muted colors a
night.
7. Diffusion Within a living cell, the oxygen from a mixture of oxygen and
carbon dioxide is used up. This creates a concentration gradient
across the cell membrane that draws in oxygen across the cell
membrane from the outside to the inside of the cell. This process
is known by which of these terms?
,NLN NEX - SCIENCE QUESTIONS & DETAILED
COMPLETE ANSWERS RATED 100% CORRECT
Diffusion
Active transport
COMPLETE ANSWERS RATED 100% CORRECT
1. Fibrous tunic In the diagram, the area labeled 2 is part of which layer of the eye
Fibrous
tunic
Sensory
tunic
Reticular
tunic
Vascular
tunic
2. Sympathetic After playing a strenuous tennis match, a player experiences
nervous system increased heart rate, rapid breathing, and dilated pupils.
Which branch of the nervous system is responsible for these
responses?
Autonomic nervous
system Central nervous
system Sympathetic
nervous system
Parasympathetic nervous
system
3. Cerebral Cortex Amnesia in humans is the loss of memory. Which of these parts of
the
brain has been affected when someone is suffering from
amnesia caused by head trauma?
Medulla
oblongata
,NLN NEX - SCIENCE QUESTIONS & DETAILED
COMPLETE ANSWERS RATED 100% CORRECT
Spinal Cord
Cerebellum
Cerebral
Cortex
4. Gastronemius If a person cannot stand on tiptoes, which muscles may be too
and soleus weak?
Rectus femoris and vastus medialis
,NLN NEX - SCIENCE QUESTIONS & DETAILED
COMPLETE ANSWERS RATED 100% CORRECT
Pectoralis major and
subclavius Gastronemius
and soleus
Biceps femoris and semimembranosus
5. Is where most of
the cell's All living cells contain cytoplasm, which is important b/c it...
chemical reac-
tions take place Carries hereditary traits
Produces protein
Is where most of the cell's chemical reactions take place
Controls what moves in and out of the cell
6. Fewer cones and a Most vertebrates have cone cells in their eyes, which
greater distinguish colors in daylight. The rods are more sensitive to
concentration of light, but do not distinguish colors. If a mammal is nocturnal, it
rods to collect the has likely evolved to have...
minimal light for
night vision. As many cones as there are rods to capture the colors at dusk/daw
An absence of cones since nocturnal mammals only need rods
to see black/white at night
Fewer cones and a greater concentration of rods to collect the
minimal light for night vision.
More cones than rods to enable them to see the muted colors a
night.
7. Diffusion Within a living cell, the oxygen from a mixture of oxygen and
carbon dioxide is used up. This creates a concentration gradient
across the cell membrane that draws in oxygen across the cell
membrane from the outside to the inside of the cell. This process
is known by which of these terms?
,NLN NEX - SCIENCE QUESTIONS & DETAILED
COMPLETE ANSWERS RATED 100% CORRECT
Diffusion
Active transport
