PAX EXAM PAPER 3: SCIENCE – 40 EXAM-STYLE
QUESTIONS WITH VERIFIED ANSWERS & DETAILED
RATIONALES | NURSING SCHOOL ADMISSION TEST
PREPARATION
COURSE NAME
PAX Science
LEVEL
College / University Entrance Examination
QUESTIONS
1. What is the basic unit of life?
A. Tissue
B. Organ
C. Cell
D. System
Answer C
The cell is the smallest structural and functional unit of life.
2. Which organ pumps blood throughout the body?
A. Liver
B. Heart
C. Kidney
D. Lung
Answer B
,The heart circulates blood through the cardiovascular system.
3. Which blood vessels carry blood away from the heart?
A. Veins
B. Capillaries
C. Arteries
D. Venules
Answer C
Arteries transport blood away from the heart.
4. What is the largest organ in the human body?
A. Liver
B. Brain
C. Skin
D. Lung
Answer C
The skin is the body's largest organ.
5. Which gas is essential for human respiration?
A. Nitrogen
B. Oxygen
, C. Helium
D. Hydrogen
Answer B
Oxygen is required for cellular respiration.
6. Which organ filters waste from the blood?
A. Stomach
B. Liver
C. Kidney
D. Pancreas
Answer C
The kidneys remove waste products and excess fluid from the blood.
7. What is the normal number of chromosomes in a human body cell?
A. 23
B. 24
C. 46
D. 48
Answer C
Human somatic cells contain 46 chromosomes.
QUESTIONS WITH VERIFIED ANSWERS & DETAILED
RATIONALES | NURSING SCHOOL ADMISSION TEST
PREPARATION
COURSE NAME
PAX Science
LEVEL
College / University Entrance Examination
QUESTIONS
1. What is the basic unit of life?
A. Tissue
B. Organ
C. Cell
D. System
Answer C
The cell is the smallest structural and functional unit of life.
2. Which organ pumps blood throughout the body?
A. Liver
B. Heart
C. Kidney
D. Lung
Answer B
,The heart circulates blood through the cardiovascular system.
3. Which blood vessels carry blood away from the heart?
A. Veins
B. Capillaries
C. Arteries
D. Venules
Answer C
Arteries transport blood away from the heart.
4. What is the largest organ in the human body?
A. Liver
B. Brain
C. Skin
D. Lung
Answer C
The skin is the body's largest organ.
5. Which gas is essential for human respiration?
A. Nitrogen
B. Oxygen
, C. Helium
D. Hydrogen
Answer B
Oxygen is required for cellular respiration.
6. Which organ filters waste from the blood?
A. Stomach
B. Liver
C. Kidney
D. Pancreas
Answer C
The kidneys remove waste products and excess fluid from the blood.
7. What is the normal number of chromosomes in a human body cell?
A. 23
B. 24
C. 46
D. 48
Answer C
Human somatic cells contain 46 chromosomes.
