TEAS 7 SciEncE PrAcTicE TEST (2026 2027 EdiTion)||| quESTionS
And AnSwErS wiTh rATionAlES/grAdEd A+/2026 uPdATE/100%
corrEcT /inSTAnT downloAd
DOMAIN 1: HUMAN ANATOMY AND PHYSIOLOGY (Questions 1-35)
Question 1
Which of the following is the primary function of the respiratory system?
A) Transport nutrients throughout the body
B) Exchange oxygen and carbon dioxide between the body and the environment
C) Filter waste products from the blood
D) Produce hormones for growth regulation
Correct Answer: B
Rationale: The primary function of the respiratory system is gas exchange: taking in oxygen
(O₂) and releasing carbon dioxide (CO₂). The circulatory system transports nutrients. The
kidneys filter waste. The endocrine system produces hormones.
Question 2
Which chamber of the heart pumps oxygenated blood to the rest of the body?
A) Right atrium
B) Right ventricle
C) Left atrium
D) Left ventricle
Correct Answer: D
,Rationale: The left ventricle is the largest and strongest chamber of the heart. It pumps
oxygenated blood through the aorta to the systemic circulation (the entire body). The right
ventricle pumps deoxygenated blood to the lungs.
Question 3
What is the function of red blood cells (erythrocytes)?
A) Fight infection
B) Carry oxygen to tissues
C) Clot blood
D) Produce antibodies
Correct Answer: B
Rationale: Red blood cells contain hemoglobin, which binds oxygen in the lungs and releases
it to body tissues. White blood cells fight infection. Platelets clot blood. Antibodies are produced
by B-lymphocytes.
Question 4
Which part of the brain is responsible for balance and coordination?
A) Cerebrum
B) Cerebellum
C) Brainstem
D) Hypothalamus
Correct Answer: B
Rationale: The cerebellum coordinates voluntary movement, balance, and fine motor skills.
The cerebrum controls higher functions like thought and memory. The brainstem controls basic
life functions (heart rate, breathing). The hypothalamus regulates homeostasis.
, Question 5
What is the functional unit of the kidney?
A) Neuron
B) Nephron
C) Alveolus
D) Villus
Correct Answer: B
Rationale: The nephron is the functional unit of the kidney responsible for filtering blood,
reabsorbing needed substances, and forming urine. The neuron is the functional unit of the
nervous system. The alveolus is the functional unit of the lung. The villus is the functional unit of
the small intestine.
Question 6
Which of the following is a function of the liver?
A) Produce insulin
B) Filter blood, produce bile, and metabolize nutrients
C) Store urine
D) Absorb nutrients
Correct Answer: B
Rationale: The liver filters blood, metabolizes nutrients and toxins, produces bile (for fat
digestion), and stores glycogen. The pancreas produces insulin. The bladder stores urine. The
small intestine absorbs nutrients.
Question 7
And AnSwErS wiTh rATionAlES/grAdEd A+/2026 uPdATE/100%
corrEcT /inSTAnT downloAd
DOMAIN 1: HUMAN ANATOMY AND PHYSIOLOGY (Questions 1-35)
Question 1
Which of the following is the primary function of the respiratory system?
A) Transport nutrients throughout the body
B) Exchange oxygen and carbon dioxide between the body and the environment
C) Filter waste products from the blood
D) Produce hormones for growth regulation
Correct Answer: B
Rationale: The primary function of the respiratory system is gas exchange: taking in oxygen
(O₂) and releasing carbon dioxide (CO₂). The circulatory system transports nutrients. The
kidneys filter waste. The endocrine system produces hormones.
Question 2
Which chamber of the heart pumps oxygenated blood to the rest of the body?
A) Right atrium
B) Right ventricle
C) Left atrium
D) Left ventricle
Correct Answer: D
,Rationale: The left ventricle is the largest and strongest chamber of the heart. It pumps
oxygenated blood through the aorta to the systemic circulation (the entire body). The right
ventricle pumps deoxygenated blood to the lungs.
Question 3
What is the function of red blood cells (erythrocytes)?
A) Fight infection
B) Carry oxygen to tissues
C) Clot blood
D) Produce antibodies
Correct Answer: B
Rationale: Red blood cells contain hemoglobin, which binds oxygen in the lungs and releases
it to body tissues. White blood cells fight infection. Platelets clot blood. Antibodies are produced
by B-lymphocytes.
Question 4
Which part of the brain is responsible for balance and coordination?
A) Cerebrum
B) Cerebellum
C) Brainstem
D) Hypothalamus
Correct Answer: B
Rationale: The cerebellum coordinates voluntary movement, balance, and fine motor skills.
The cerebrum controls higher functions like thought and memory. The brainstem controls basic
life functions (heart rate, breathing). The hypothalamus regulates homeostasis.
, Question 5
What is the functional unit of the kidney?
A) Neuron
B) Nephron
C) Alveolus
D) Villus
Correct Answer: B
Rationale: The nephron is the functional unit of the kidney responsible for filtering blood,
reabsorbing needed substances, and forming urine. The neuron is the functional unit of the
nervous system. The alveolus is the functional unit of the lung. The villus is the functional unit of
the small intestine.
Question 6
Which of the following is a function of the liver?
A) Produce insulin
B) Filter blood, produce bile, and metabolize nutrients
C) Store urine
D) Absorb nutrients
Correct Answer: B
Rationale: The liver filters blood, metabolizes nutrients and toxins, produces bile (for fat
digestion), and stores glycogen. The pancreas produces insulin. The bladder stores urine. The
small intestine absorbs nutrients.
Question 7
