ATI TEAS NURSING ENTRANCE EXAM QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM UPDATE 2026/2027
Which organ system is primarily responsible for the regulation of blood pH through the excretion of
hydrogen ions?
A. Cardiovascular system
B. Respiratory system
C. Urinary system
D. Endocrine system
🟢 C. Urinary system
🔴 RATIONALE: The kidneys in the urinary system play a primary, long-term role in maintaining
acid-base balance by excreting hydrogen ions and reabsorbing bicarbonate.
A nurse is caring for a patient who is non-compliant with prescribed medication. Which ethical
principle is being challenged?
A. Autonomy
B. Justice
C. Beneficence
D. Non-maleficence
🟢 A. Autonomy
🔴 RATIONALE: Autonomy refers to the patient's right to make their own healthcare decisions,
including the right to refuse treatment.
Which of the following is a characteristic of a covalent bond?
A. Transfer of electrons from one atom to another
B. Attraction between oppositely charged ions
C. Sharing of electron pairs between atoms
D. Weak electrostatic force between molecules
,🟢 C. Sharing of electron pairs between atoms
🔴 RATIONALE: Covalent bonds are formed when two atoms share one or more pairs of electrons
to achieve stability.
Which structure in the human body is the site of gas exchange?
A. Bronchi
B. Trachea
C. Alveoli
D. Larynx
🟢 C. Alveoli
🔴 RATIONALE: Alveoli are tiny air sacs in the lungs where oxygen enters the blood and carbon
dioxide leaves it.
What is the standard practice for disposing of sharps in a clinical setting?
A. Place them in a regular trash can
B. Recapping the needle before disposal
C. Dropping into a puncture-resistant container
D. Washing them before disposal
🟢 C. Dropping into a puncture-resistant container
🔴 RATIONALE: OSHA regulations mandate that sharps must be disposed of in designated,
puncture-resistant, labeled containers to prevent accidental injury.
Which process describes the movement of water across a semipermeable membrane?
A. Diffusion
B. Osmosis
C. Active transport
D. Filtration
,🟢 B. Osmosis
🔴 RATIONALE: Osmosis is specifically defined as the diffusion of water through a semipermeable
membrane from an area of low solute concentration to high solute concentration.
A patient presents with a fever, productive cough, and chest pain. Which body system is primarily
affected?
A. Integumentary
B. Respiratory
C. Digestive
D. Nervous
🟢 B. Respiratory
🔴 RATIONALE: Symptoms like productive cough and chest pain are clinical indicators of
respiratory involvement.
Which plane divides the body into superior and inferior portions?
A. Sagittal
B. Frontal
C. Transverse
D. Coronal
🟢 C. Transverse
🔴 RATIONALE: The transverse plane (or horizontal plane) divides the body into top (superior)
and bottom (inferior) sections.
What is the role of hemoglobin in the blood?
A. To fight infection
B. To clot the blood
C. To transport oxygen
, D. To regulate body temperature
🟢 C. To transport oxygen
🔴 RATIONALE: Hemoglobin is a protein in red blood cells that binds to oxygen in the lungs and
delivers it to body tissues.
If a nurse witnesses another staff member violating patient privacy, what is the professional
responsibility?
A. Ignore the incident
B. Discuss it with other coworkers
C. Report the incident through proper facility channels
D. Confront the patient directly
🟢 C. Report the incident through proper facility channels
🔴 RATIONALE: HIPAA and professional standards require reporting potential privacy violations to
maintain legal and ethical compliance.
Which of the following is a symptom of hypoglycemia?
A. Excessive thirst
B. Tremors and sweating
C. Increased urination
D. High blood pressure
🟢 B. Tremors and sweating
🔴 RATIONALE: Hypoglycemia (low blood sugar) often manifests as tremors, sweating,
tachycardia, and confusion.
Which hormone is produced by the pancreas to lower blood glucose levels?
A. Glucagon
B. Insulin
ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM UPDATE 2026/2027
Which organ system is primarily responsible for the regulation of blood pH through the excretion of
hydrogen ions?
A. Cardiovascular system
B. Respiratory system
C. Urinary system
D. Endocrine system
🟢 C. Urinary system
🔴 RATIONALE: The kidneys in the urinary system play a primary, long-term role in maintaining
acid-base balance by excreting hydrogen ions and reabsorbing bicarbonate.
A nurse is caring for a patient who is non-compliant with prescribed medication. Which ethical
principle is being challenged?
A. Autonomy
B. Justice
C. Beneficence
D. Non-maleficence
🟢 A. Autonomy
🔴 RATIONALE: Autonomy refers to the patient's right to make their own healthcare decisions,
including the right to refuse treatment.
Which of the following is a characteristic of a covalent bond?
A. Transfer of electrons from one atom to another
B. Attraction between oppositely charged ions
C. Sharing of electron pairs between atoms
D. Weak electrostatic force between molecules
,🟢 C. Sharing of electron pairs between atoms
🔴 RATIONALE: Covalent bonds are formed when two atoms share one or more pairs of electrons
to achieve stability.
Which structure in the human body is the site of gas exchange?
A. Bronchi
B. Trachea
C. Alveoli
D. Larynx
🟢 C. Alveoli
🔴 RATIONALE: Alveoli are tiny air sacs in the lungs where oxygen enters the blood and carbon
dioxide leaves it.
What is the standard practice for disposing of sharps in a clinical setting?
A. Place them in a regular trash can
B. Recapping the needle before disposal
C. Dropping into a puncture-resistant container
D. Washing them before disposal
🟢 C. Dropping into a puncture-resistant container
🔴 RATIONALE: OSHA regulations mandate that sharps must be disposed of in designated,
puncture-resistant, labeled containers to prevent accidental injury.
Which process describes the movement of water across a semipermeable membrane?
A. Diffusion
B. Osmosis
C. Active transport
D. Filtration
,🟢 B. Osmosis
🔴 RATIONALE: Osmosis is specifically defined as the diffusion of water through a semipermeable
membrane from an area of low solute concentration to high solute concentration.
A patient presents with a fever, productive cough, and chest pain. Which body system is primarily
affected?
A. Integumentary
B. Respiratory
C. Digestive
D. Nervous
🟢 B. Respiratory
🔴 RATIONALE: Symptoms like productive cough and chest pain are clinical indicators of
respiratory involvement.
Which plane divides the body into superior and inferior portions?
A. Sagittal
B. Frontal
C. Transverse
D. Coronal
🟢 C. Transverse
🔴 RATIONALE: The transverse plane (or horizontal plane) divides the body into top (superior)
and bottom (inferior) sections.
What is the role of hemoglobin in the blood?
A. To fight infection
B. To clot the blood
C. To transport oxygen
, D. To regulate body temperature
🟢 C. To transport oxygen
🔴 RATIONALE: Hemoglobin is a protein in red blood cells that binds to oxygen in the lungs and
delivers it to body tissues.
If a nurse witnesses another staff member violating patient privacy, what is the professional
responsibility?
A. Ignore the incident
B. Discuss it with other coworkers
C. Report the incident through proper facility channels
D. Confront the patient directly
🟢 C. Report the incident through proper facility channels
🔴 RATIONALE: HIPAA and professional standards require reporting potential privacy violations to
maintain legal and ethical compliance.
Which of the following is a symptom of hypoglycemia?
A. Excessive thirst
B. Tremors and sweating
C. Increased urination
D. High blood pressure
🟢 B. Tremors and sweating
🔴 RATIONALE: Hypoglycemia (low blood sugar) often manifests as tremors, sweating,
tachycardia, and confusion.
Which hormone is produced by the pancreas to lower blood glucose levels?
A. Glucagon
B. Insulin
