ATI TEAS NURSING ENTRANCE EXAM, COMPREHENSIVE QUESTIONS AND VERIFIED
ANSWERS QUESTIONS WITH ACCURATE ANSWERS | GET IT RIGHT |!
Question 1
When the chromosomes line up in the middle of the cell during mitosis, this is known as which
phase?
A) Telophase
B) Anaphase
C) Metaphase
D) Prophase
E) Interphase
Correct Answer: C) Metaphase
Rationale: Metaphase is the stage of mitosis where the cell's chromosomes align themselves
in the middle of the cell (the metaphase plate). This ensures that when the chromosomes are
separated, each new nucleus will receive one copy of each chromosome. Prophase involves
thickening of chromatin, Anaphase involves separation, and Telophase involves the
formation of two new nuclei.
Question 2
Which cellular organelle contains enzymes that are considered digestive, responsible for
breaking down waste materials and cellular debris?
A) Golgi Apparatus
B) Lysosomes
C) Nucleus
D) Ribosomes
E) Mitochondria
Correct Answer: B) Lysosomes
Rationale: Lysosomes are membrane-bound organelles containing digestive enzymes. They
act as the "garbage disposal" of the cell, breaking down macromolecules, old cell parts, and
foreign substances. The Golgi apparatus modifies proteins, the Nucleus stores genetic info,
and Ribosomes synthesize proteins.
Question 3
Organs and tissues in the human body repair themselves through which cellular process?
A) Meiosis
B) Mitosis
C) Cellular differentiation
D) Transformation
E) Meiotic recombination
Correct Answer: B) Mitosis
Rationale: Mitosis is the process of asexual reproduction where a single cell divides into two
identical daughter cells. This process is essential for growth and the repair of damaged
, 2
tissues and organs. Meiosis, by contrast, is used specifically for the production of gametes
(sperm and eggs) and results in genetic variation.
Question 4
Which of the following is considered a widely accepted model for describing how an enzyme
interacts with a specific substrate?
A) Lock and Key model
B) Enzyme interaction model
C) Transformation model
D) Transcription model
E) Fluid Mosaic model
Correct Answer: A) Lock and Key model
Rationale: The Lock and Key model proposes that the enzyme and substrate possess specific
complementary geometric shapes that fit exactly into one another. This explains enzyme
specificity, where a particular enzyme only acts on a specific substrate, much like a key
only fits a specific lock.
Question 5
Which of the following statements about enzymes is NOT true?
A) Enzymes act as biological catalysts to speed up reactions.
B) Almost all enzymes are composed of proteins.
C) Enzymes operate most efficiently at an optimum pH and temperature.
D) Enzymes are destroyed and consumed during chemical reactions.
E) Enzymes lower the activation energy required for a reaction.
Correct Answer: D) Enzymes are destroyed during chemical reactions.
Rationale: Enzymes are catalysts, meaning they participate in a chemical reaction to speed
it up but are not consumed or permanently altered by the process. After a reaction is
complete, the enzyme is free to bind with a new substrate and repeat the process. All other
options are scientifically accurate properties of enzymes.
Question 6
Which of the following statements about prostaglandins is NOT true?
A) Prostaglandins promote inflammation and blood clotting.
B) Prostaglandins can only constrict blood vessels.
C) Prostaglandins are produced in various tissues, including the renal medulla.
D) Prostaglandins can lead to the sensation of pain and the development of fever.
E) Prostaglandins are lipid-like compounds derived from fatty acids.
Correct Answer: B) Prostaglandins can only constrict blood vessels.
Rationale: This statement is false because prostaglandins can have diverse effects;
depending on the specific type and the tissue involved, they can cause either
, 3
vasoconstriction (narrowing) or vasodilation (widening) of blood vessels. They are key
mediators in inflammation, pain, and fever responses.
Question 7
In clinical health, cholesterol known as LDL stands for:
A) Low-density lipoproteins
B) Low-density lysosomes
C) Level-density lipoproteins
D) Level-density lysosomes
E) Linear-density lipoproteins
Correct Answer: A) Low-density lipoproteins
Rationale: LDL stands for Low-Density Lipoprotein. It is often referred to as "bad"
cholesterol because high levels can lead to a buildup of plaque in the arteries. Lipoproteins
are substances made of protein and fat that carry cholesterol through the bloodstream.
Question 8
The medical condition characterized by the hardening and loss of elasticity in the arteries is
known as:
A) Atheriosclerosis
B) Venous narrowing
C) Micro-circulation
D) Hypertension
E) Hypotension
Correct Answer: A) Atheriosclerosis
Rationale: Arteriosclerosis (often used interchangeably with atherosclerosis in common
contexts) refers to the thickening and hardening of the walls of the arteries, which can
restrict blood flow to organs and tissues. Hypertension refers to high blood pressure, which
is a risk factor for, but not the same as, the hardening of the vessels.
Question 9
When taking a blood pressure reading, the top number (the higher value) indicates the:
A) Diastolic pressure
B) Transient pressure
C) Optimum pressure
D) Systolic pressure
E) Pulse pressure
Correct Answer: D) Systolic pressure
Rationale: Systolic pressure measures the force the heart exerts on the walls of the arteries
each time it beats (contracts). The bottom number is the diastolic pressure, which measures
the force on the arteries when the heart rests between beats.
, 4
Question 10
In a laboratory setting, litmus paper that is blue will turn or stay which color in the presence of a
strong base?
A) Orange
B) Red
C) Blue
D) Green
E) Yellow
Correct Answer: C) Blue
Rationale: Litmus paper is a pH indicator. Blue litmus paper stays blue in basic (alkaline)
conditions and turns red in acidic conditions. Conversely, red litmus paper turns blue in
the presence of a base.
Question 11
Breathing properly requires the presence of which compound that reduces the surface tension of
the alveoli in the lungs, preventing collapse?
A) Potassium
B) Plasma
C) Surfactant
D) Sodium Chloride
E) Magnesium
Correct Answer: C) Surfactant
Rationale: Pulmonary surfactant is a mixture of lipids and proteins secreted by epithelial
cells in the alveoli. Its primary role is to lower surface tension at the air-liquid interface,
which prevents the small air sacs (alveoli) from collapsing at the end of expiration.
Question 12
Which of the following is NOT considered one of the primary functions of the kidneys?
A) Secretion of waste
B) Reabsorption of essential nutrients and water
C) Transport of oxygen to the tissues
D) Filtration of blood
E) Regulation of electrolyte balance
Correct Answer: C) Transport
Rationale: The primary functions of the kidney are filtration (at the glomerulus),
reabsorption (moving useful substances back into the blood), and secretion (moving waste
into the urine). Transporting oxygen is the primary function of red blood cells
(hemoglobin) in the circulatory system, not the kidneys.
Question 13
The functional, microscopic unit of the kidney responsible for forming urine is known as the?
ANSWERS QUESTIONS WITH ACCURATE ANSWERS | GET IT RIGHT |!
Question 1
When the chromosomes line up in the middle of the cell during mitosis, this is known as which
phase?
A) Telophase
B) Anaphase
C) Metaphase
D) Prophase
E) Interphase
Correct Answer: C) Metaphase
Rationale: Metaphase is the stage of mitosis where the cell's chromosomes align themselves
in the middle of the cell (the metaphase plate). This ensures that when the chromosomes are
separated, each new nucleus will receive one copy of each chromosome. Prophase involves
thickening of chromatin, Anaphase involves separation, and Telophase involves the
formation of two new nuclei.
Question 2
Which cellular organelle contains enzymes that are considered digestive, responsible for
breaking down waste materials and cellular debris?
A) Golgi Apparatus
B) Lysosomes
C) Nucleus
D) Ribosomes
E) Mitochondria
Correct Answer: B) Lysosomes
Rationale: Lysosomes are membrane-bound organelles containing digestive enzymes. They
act as the "garbage disposal" of the cell, breaking down macromolecules, old cell parts, and
foreign substances. The Golgi apparatus modifies proteins, the Nucleus stores genetic info,
and Ribosomes synthesize proteins.
Question 3
Organs and tissues in the human body repair themselves through which cellular process?
A) Meiosis
B) Mitosis
C) Cellular differentiation
D) Transformation
E) Meiotic recombination
Correct Answer: B) Mitosis
Rationale: Mitosis is the process of asexual reproduction where a single cell divides into two
identical daughter cells. This process is essential for growth and the repair of damaged
, 2
tissues and organs. Meiosis, by contrast, is used specifically for the production of gametes
(sperm and eggs) and results in genetic variation.
Question 4
Which of the following is considered a widely accepted model for describing how an enzyme
interacts with a specific substrate?
A) Lock and Key model
B) Enzyme interaction model
C) Transformation model
D) Transcription model
E) Fluid Mosaic model
Correct Answer: A) Lock and Key model
Rationale: The Lock and Key model proposes that the enzyme and substrate possess specific
complementary geometric shapes that fit exactly into one another. This explains enzyme
specificity, where a particular enzyme only acts on a specific substrate, much like a key
only fits a specific lock.
Question 5
Which of the following statements about enzymes is NOT true?
A) Enzymes act as biological catalysts to speed up reactions.
B) Almost all enzymes are composed of proteins.
C) Enzymes operate most efficiently at an optimum pH and temperature.
D) Enzymes are destroyed and consumed during chemical reactions.
E) Enzymes lower the activation energy required for a reaction.
Correct Answer: D) Enzymes are destroyed during chemical reactions.
Rationale: Enzymes are catalysts, meaning they participate in a chemical reaction to speed
it up but are not consumed or permanently altered by the process. After a reaction is
complete, the enzyme is free to bind with a new substrate and repeat the process. All other
options are scientifically accurate properties of enzymes.
Question 6
Which of the following statements about prostaglandins is NOT true?
A) Prostaglandins promote inflammation and blood clotting.
B) Prostaglandins can only constrict blood vessels.
C) Prostaglandins are produced in various tissues, including the renal medulla.
D) Prostaglandins can lead to the sensation of pain and the development of fever.
E) Prostaglandins are lipid-like compounds derived from fatty acids.
Correct Answer: B) Prostaglandins can only constrict blood vessels.
Rationale: This statement is false because prostaglandins can have diverse effects;
depending on the specific type and the tissue involved, they can cause either
, 3
vasoconstriction (narrowing) or vasodilation (widening) of blood vessels. They are key
mediators in inflammation, pain, and fever responses.
Question 7
In clinical health, cholesterol known as LDL stands for:
A) Low-density lipoproteins
B) Low-density lysosomes
C) Level-density lipoproteins
D) Level-density lysosomes
E) Linear-density lipoproteins
Correct Answer: A) Low-density lipoproteins
Rationale: LDL stands for Low-Density Lipoprotein. It is often referred to as "bad"
cholesterol because high levels can lead to a buildup of plaque in the arteries. Lipoproteins
are substances made of protein and fat that carry cholesterol through the bloodstream.
Question 8
The medical condition characterized by the hardening and loss of elasticity in the arteries is
known as:
A) Atheriosclerosis
B) Venous narrowing
C) Micro-circulation
D) Hypertension
E) Hypotension
Correct Answer: A) Atheriosclerosis
Rationale: Arteriosclerosis (often used interchangeably with atherosclerosis in common
contexts) refers to the thickening and hardening of the walls of the arteries, which can
restrict blood flow to organs and tissues. Hypertension refers to high blood pressure, which
is a risk factor for, but not the same as, the hardening of the vessels.
Question 9
When taking a blood pressure reading, the top number (the higher value) indicates the:
A) Diastolic pressure
B) Transient pressure
C) Optimum pressure
D) Systolic pressure
E) Pulse pressure
Correct Answer: D) Systolic pressure
Rationale: Systolic pressure measures the force the heart exerts on the walls of the arteries
each time it beats (contracts). The bottom number is the diastolic pressure, which measures
the force on the arteries when the heart rests between beats.
, 4
Question 10
In a laboratory setting, litmus paper that is blue will turn or stay which color in the presence of a
strong base?
A) Orange
B) Red
C) Blue
D) Green
E) Yellow
Correct Answer: C) Blue
Rationale: Litmus paper is a pH indicator. Blue litmus paper stays blue in basic (alkaline)
conditions and turns red in acidic conditions. Conversely, red litmus paper turns blue in
the presence of a base.
Question 11
Breathing properly requires the presence of which compound that reduces the surface tension of
the alveoli in the lungs, preventing collapse?
A) Potassium
B) Plasma
C) Surfactant
D) Sodium Chloride
E) Magnesium
Correct Answer: C) Surfactant
Rationale: Pulmonary surfactant is a mixture of lipids and proteins secreted by epithelial
cells in the alveoli. Its primary role is to lower surface tension at the air-liquid interface,
which prevents the small air sacs (alveoli) from collapsing at the end of expiration.
Question 12
Which of the following is NOT considered one of the primary functions of the kidneys?
A) Secretion of waste
B) Reabsorption of essential nutrients and water
C) Transport of oxygen to the tissues
D) Filtration of blood
E) Regulation of electrolyte balance
Correct Answer: C) Transport
Rationale: The primary functions of the kidney are filtration (at the glomerulus),
reabsorption (moving useful substances back into the blood), and secretion (moving waste
into the urine). Transporting oxygen is the primary function of red blood cells
(hemoglobin) in the circulatory system, not the kidneys.
Question 13
The functional, microscopic unit of the kidney responsible for forming urine is known as the?
