NEX EXAM QUESTIONS AND ANSWERS
After playing a strenuous tennis match, a player experiences an increased heart rate,
rapid breathing, and dilated pupils. Which branch of the nervous system is responsible
for these responses?
-sympathetic nervous system
-parasympathetic nervous system
-autonomic nervous system
-central nervous system - Answers - Sympathetic nervous system
A gram stain is an important technique used in the laboratory that - Answers -
Distinguishes between different kinds of bacterial cell walls.
A method for determining the blood alcohol content of a subject is to - Answers - Use a
breathalyzer
As part of the human immune response, which of these cells are responsible for
producing antibodies? - Answers - lymphocytes
In ecological succession, the first living thing to colonize a currently barren area is called
a - Answers - pioneer organism
What is the anatomical name for the collarbone? - Answers - clavicle
The scientific name of the wolf is Canis lupus. The name indicates the wolf's - Answers -
genus and species.
What is the recommended amount of water that an individual should drink each day? -
Answers - 64 oz
Which of these structures contains valves to prevent blood from flowing in the wrong
direction? - Answers - veins
Compounds with the same type and number of atoms and the same chemical bonds but
different spatial arrangements of these bonds and atoms are called - Answers -
structural isomers
Reducing the use of aeresol cans has contributed to the decrease of - Answers -
destruction of the ozone layer
Which of these equations best illustrates a synthesis reaction? - Answers - 2Na + Cl2 ->
2NaCl
What is a key function of red bone marrow? - Answers - Blood cell formation
,Which of these sequences of anatomic organization, from the simplest level to the most
complex, is the correct sequence? - Answers - From tissue, organ, organ system to
organism
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 - Answers - active transport
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 - Answers - active transport
The extension of a neuron that carries the impulse to another cell is called - Answers -
an axon
The humerus is a bone located in which part of the body? - Answers - Arm
During exercise, a person's respiratory rate increases due to - Answers - An increase in
CO2 concentration in the blood.
Which of these processes occurs at a neuromuscular junction? - Answers - impulse
transmission
All living cells contain cytoplasm. Cytoplasm is important because it - Answers - Is
where most of the cells chemical reactions take place
What type of bacteria may be present in raw eggs? - Answers - salmonella
Which of these conditions is associated with smoking? - Answers - emphysema
Which part of the cell structure controls the passage of materials into and out of the
cell? - Answers - plasma membrane
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? - Answers -
cerebral cortex
In a study on the effect of cocaine on the brains of rats, two groups of animals were
selected. Each day, Group A was injected with the drug dissolved in water, whereas
Group B was injected with water alone. In such a study Group B is included as -
Answers - control group
When two atoms share a pair of electrons, the bond between them is called - Answers -
covalent
,Which of these organisms can use nitrogen directly from air? - Answers - Blue-green
algae
In order to observe the endoplasmic reticulum in a cell, a scientist would use - Answers
- an electron microscope
When your muscles atrophy, they - Answers - to waste away
A material that settles out of a reaction is termed a(n) - Answers - precipitate
Which of these organisms has the most complex digestive system? - Answers -
earthworm
If a person cannot stand on their tiptoes, which muscles may be too weak? - Answers -
Gastrocnemia and soleus
The full set of genes in an individual is known as - Answers - human genome
When a drop of dilute nitric acid is added to water surrounding a hydra, the animal
draws in its tentacles. The acid is acting as - Answers - stimulus
pioneer organisms - Answers - The first to colonize a barren environment in primary
ecological succession.
What substances are released from the liver and pancreas into the region of the
digestive tract numbered 6? - Answers - bile salts and bicarbonate.
Hydrochloric acid is produced by the - Answers - stomach
If a person has a lateral curvature of the spine, which anatomical structure is affected? -
Answers - Vertebral column
The Pap test can detect cancer in the female reproductive tract at an early stage,
requiring cells scraped from: - Answers - cervix
All living cells contain cytoplasm. Cytoplasm is important because it - Answers - Is
where most of the cells chemical reactions take place
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 - Answers - ruptured platelets
release thromboplastin
The cell structure that controls the flow of materials into and out of the cell is the -
Answers - plasma membrane
, plasma membrane - Answers - The cell structure that controls the flow of materials into
and out of the cell
The meiotic division of cells leads to the production of cells that - Answers - contain half
the usual number of chromosomes
An example of the most complex level of organization in a frog is the - Answers -
respiratory system
In corn plants, the gene that codes for the presence of chlorophyll is sometimes
missing. The resulting seedlings are albino and will not survive. This lethal gene
appears in corn populations because - Answers - the parent plants that produced the
seeds carried the recessive gene for the albino trait
The process of nuclear cell division in the cell reproduction of plants differs from
mammals. A major difference is that - Answers - cell plates are synthesized
A pharmaceutical company is testing a new drug to help with insomnia before it is put
on the market. For the test, a placebo was given to 1000 test subjects in Group 1. The
sleeping pill was given to 1000 subjects in Group 2. In this experiment the subjects in
Group 1 served as the - Answers - Control
Ductless glands in the human body secrete - Answers - hormones
Unicellular organisms that have a nucleus and can swim with the aid of cilia are
examples of - Answers - protozoans
Muscles are attached to bone by which of these structures? - Answers - tendon
The organ that filters metabolic waste from the blood is the - Answers - kidney
The region of the brain most concerned with coordinating somatic motor function is the -
Answers - cerebellum
In the diagram below, the area labeled 2 is part of which layer of the eye? - Answers -
Fibrous tunic
Which of these is an example of an emulsion? - Answers - mayonnaise
Emulsion - Answers - The colloidal dispersion of one liquid in another
Which part of the human central nervous system controls voluntary movements? -
Answers - cerebrum
Which of these pH values represents the most basic solution? - Answers - 14
After playing a strenuous tennis match, a player experiences an increased heart rate,
rapid breathing, and dilated pupils. Which branch of the nervous system is responsible
for these responses?
-sympathetic nervous system
-parasympathetic nervous system
-autonomic nervous system
-central nervous system - Answers - Sympathetic nervous system
A gram stain is an important technique used in the laboratory that - Answers -
Distinguishes between different kinds of bacterial cell walls.
A method for determining the blood alcohol content of a subject is to - Answers - Use a
breathalyzer
As part of the human immune response, which of these cells are responsible for
producing antibodies? - Answers - lymphocytes
In ecological succession, the first living thing to colonize a currently barren area is called
a - Answers - pioneer organism
What is the anatomical name for the collarbone? - Answers - clavicle
The scientific name of the wolf is Canis lupus. The name indicates the wolf's - Answers -
genus and species.
What is the recommended amount of water that an individual should drink each day? -
Answers - 64 oz
Which of these structures contains valves to prevent blood from flowing in the wrong
direction? - Answers - veins
Compounds with the same type and number of atoms and the same chemical bonds but
different spatial arrangements of these bonds and atoms are called - Answers -
structural isomers
Reducing the use of aeresol cans has contributed to the decrease of - Answers -
destruction of the ozone layer
Which of these equations best illustrates a synthesis reaction? - Answers - 2Na + Cl2 ->
2NaCl
What is a key function of red bone marrow? - Answers - Blood cell formation
,Which of these sequences of anatomic organization, from the simplest level to the most
complex, is the correct sequence? - Answers - From tissue, organ, organ system to
organism
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 - Answers - active transport
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 - Answers - active transport
The extension of a neuron that carries the impulse to another cell is called - Answers -
an axon
The humerus is a bone located in which part of the body? - Answers - Arm
During exercise, a person's respiratory rate increases due to - Answers - An increase in
CO2 concentration in the blood.
Which of these processes occurs at a neuromuscular junction? - Answers - impulse
transmission
All living cells contain cytoplasm. Cytoplasm is important because it - Answers - Is
where most of the cells chemical reactions take place
What type of bacteria may be present in raw eggs? - Answers - salmonella
Which of these conditions is associated with smoking? - Answers - emphysema
Which part of the cell structure controls the passage of materials into and out of the
cell? - Answers - plasma membrane
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? - Answers -
cerebral cortex
In a study on the effect of cocaine on the brains of rats, two groups of animals were
selected. Each day, Group A was injected with the drug dissolved in water, whereas
Group B was injected with water alone. In such a study Group B is included as -
Answers - control group
When two atoms share a pair of electrons, the bond between them is called - Answers -
covalent
,Which of these organisms can use nitrogen directly from air? - Answers - Blue-green
algae
In order to observe the endoplasmic reticulum in a cell, a scientist would use - Answers
- an electron microscope
When your muscles atrophy, they - Answers - to waste away
A material that settles out of a reaction is termed a(n) - Answers - precipitate
Which of these organisms has the most complex digestive system? - Answers -
earthworm
If a person cannot stand on their tiptoes, which muscles may be too weak? - Answers -
Gastrocnemia and soleus
The full set of genes in an individual is known as - Answers - human genome
When a drop of dilute nitric acid is added to water surrounding a hydra, the animal
draws in its tentacles. The acid is acting as - Answers - stimulus
pioneer organisms - Answers - The first to colonize a barren environment in primary
ecological succession.
What substances are released from the liver and pancreas into the region of the
digestive tract numbered 6? - Answers - bile salts and bicarbonate.
Hydrochloric acid is produced by the - Answers - stomach
If a person has a lateral curvature of the spine, which anatomical structure is affected? -
Answers - Vertebral column
The Pap test can detect cancer in the female reproductive tract at an early stage,
requiring cells scraped from: - Answers - cervix
All living cells contain cytoplasm. Cytoplasm is important because it - Answers - Is
where most of the cells chemical reactions take place
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 - Answers - ruptured platelets
release thromboplastin
The cell structure that controls the flow of materials into and out of the cell is the -
Answers - plasma membrane
, plasma membrane - Answers - The cell structure that controls the flow of materials into
and out of the cell
The meiotic division of cells leads to the production of cells that - Answers - contain half
the usual number of chromosomes
An example of the most complex level of organization in a frog is the - Answers -
respiratory system
In corn plants, the gene that codes for the presence of chlorophyll is sometimes
missing. The resulting seedlings are albino and will not survive. This lethal gene
appears in corn populations because - Answers - the parent plants that produced the
seeds carried the recessive gene for the albino trait
The process of nuclear cell division in the cell reproduction of plants differs from
mammals. A major difference is that - Answers - cell plates are synthesized
A pharmaceutical company is testing a new drug to help with insomnia before it is put
on the market. For the test, a placebo was given to 1000 test subjects in Group 1. The
sleeping pill was given to 1000 subjects in Group 2. In this experiment the subjects in
Group 1 served as the - Answers - Control
Ductless glands in the human body secrete - Answers - hormones
Unicellular organisms that have a nucleus and can swim with the aid of cilia are
examples of - Answers - protozoans
Muscles are attached to bone by which of these structures? - Answers - tendon
The organ that filters metabolic waste from the blood is the - Answers - kidney
The region of the brain most concerned with coordinating somatic motor function is the -
Answers - cerebellum
In the diagram below, the area labeled 2 is part of which layer of the eye? - Answers -
Fibrous tunic
Which of these is an example of an emulsion? - Answers - mayonnaise
Emulsion - Answers - The colloidal dispersion of one liquid in another
Which part of the human central nervous system controls voluntary movements? -
Answers - cerebrum
Which of these pH values represents the most basic solution? - Answers - 14
