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Science Exam 2024/2025 (NLN NEX) with 100% Correct Answers

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Science Exam 2024/2025 (NLN NEX) with 100% Correct Answers

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  • September 14, 2024
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  • 2024/2025
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Science Exam 2024/2025 (NLN NEX) with 100% Correct Answers


In the diagram, the area labeled 2 is part of which layer of the eye?


Fibrous tunic
Sensory tunic
Reticular tunic
Vascular tunic - Precise Answer ✔✔Fibrous tunic


After playing a strenous tennis match, a player experiences 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 - Precise Answer ✔✔Sympathetic
nervous system


Amnesia in humans is the loss of memory. Which of these parts of the
brain has been affected when someone is suffering from amnesia cuased
by head trauma?


Medulla oblongata
Spinal Cord

,Cerebellum
Cerebral Cortex - Precise Answer ✔✔Cerebral Cortex


If a person cannot stand on tiptoes, which muscles may be too weak?


Rectus femoris and vastus medialis
Pectoralis major and subclavius
Gastronemius and soleus
Biceps femoris and semimembranosus - Precise Answer
✔✔Gastronemius and soleus


All living cells contain cytoplasm, which is important b/c it...


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 - Precise Answer ✔✔Is
where most of the cell's chemical reactions take place


Most vertebrates have cone cells in their eyes, which distinguish colors
in daylight. The rods are more sensitive to light, but do not distinguish
colors. If a mamal is nocturnal, it has likely evolved to have...


As many cones as there are rods to capture the colors at dusk/dawn

,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 at night. -
Precise Answer ✔✔Fewer cones and a greater concentration of rods to
collect the minimal light for night vision.


Whithin 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?


Diffusion
Active transport
Osmosis
Cellular respiration - Precise Answer ✔✔Diffusion


As part of the human immune response, which of these cells are
responsible for producing antibodies?


Macrophages

, Suppressor cells
Helper cells
Lymphocytes - Precise Answer ✔✔Lymphocytes


When a person nods their head yes/no, which joint allows for that
movement?


Coxal join
Atlanto-occipital joint
Temporomandibular joint
Glenohumeral joint - Precise Answer ✔✔Atlanto-occipital joint


What structure within the area labeled as B contains the sensory
receptors for dynamic equilibrium?


Macula sacculi
Spiral organ
Crista ampullaris
Macula utriculi - Precise Answer ✔✔Crista ampullaris


If a person has a lateral curvature of the spine, which anatomical
structure is affected?


Thoracic cage

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