Question Practice Bank Featuring Detailed Answer
Rationales Across All Four Sections—Science, Reading,
Mathematics, and English Language Usage—for Optimal
2025–2026 Test Preparation and Success
Science (Questions 1-20)
1. Which organ is responsible for filtering blood
and producing urine?
A. Liver
B. Kidney
C. Pancreas
D. Lung
☑VERIFIED ANSWER: B. Kidney
Rationale: The kidneys filter waste products, excess
water, and toxins from the blood to form urine.
They also regulate electrolyte balance, blood
pressure, and pH.
2. What is the main function of red blood cells?
A. Fight infection
B. Carry oxygen
,C. Produce hormones
D. Clot blood
☑VERIFIED ANSWER: B. Carry oxygen
Rationale: Red blood cells contain hemoglobin,
which binds oxygen in the lungs and transports it to
body tissues.
3. What is the function of the alveoli?
A. Filter air
B. Exchange oxygen and carbon dioxide
C. Produce mucus
D. Control breathing rate
☑VERIFIED ANSWER: B. Exchange oxygen and
carbon dioxide
Rationale: Alveoli are tiny sacs in the lungs where
gas exchange occurs between air and blood.
4. Which structure carries blood away from the
heart?
A. Veins
B. Arteries
C. Capillaries
,D. Venules
☑VERIFIED ANSWER: B. Arteries
Rationale: Arteries carry oxygenated blood away
from the heart under high pressure.
5. Which part of the brain is responsible for
balance and coordination?
A. Cerebrum
B. Cerebellum
C. Medulla
D. Hypothalamus
☑VERIFIED ANSWER: B. Cerebellum
Rationale: The cerebellum coordinates voluntary
movements, balance, posture, and fine motor
control.
6. What is the function of hemoglobin?
A. Fight infection
B. Carry oxygen in blood
C. Clot blood
D. Produce hormones
☑VERIFIED ANSWER: B. Carry oxygen in blood
, Rationale: Hemoglobin is a protein in red blood cells
that binds oxygen in the lungs and transports it to
tissues.
7. Which organ is part of the respiratory system?
A. Kidney
B. Trachea
C. Liver
D. Pancreas
☑VERIFIED ANSWER: B. Trachea
Rationale: The trachea carries air from the larynx to
the lungs.
8. What is the function of the large intestine?
A. Absorb nutrients
B. Absorb water
C. Produce enzymes
D. Exchange gases
☑VERIFIED ANSWER: B. Absorb water
Rationale: The large intestine absorbs water and
electrolytes and forms solid feces.