ATI TEAS 7 Nursing
Science Exam
Questions And Correct
Answers (Verified
Answers) Plus
Rationales 2025/2026
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1. What is the basic unit of life?
A. Tissue
B. Organ
C. Cell
D. System
Answer: C
,Rationale: The cell is the smallest structure capable of
performing all life functions.
2. Which organelle is responsible for energy production?
A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Answer: C
Rationale: Mitochondria generate ATP through cellular
respiration.
3. What type of tissue covers body surfaces?
A. Connective
B. Muscle
C. Nervous
D. Epithelial
Answer: D
Rationale: Epithelial tissue forms protective coverings and
linings.
4. Which system regulates hormones?
A. Nervous
B. Endocrine
C. Circulatory
D. Respiratory
,Answer: B
Rationale: The endocrine system secretes hormones into the
bloodstream.
5. What is the main function of red blood cells?
A. Immunity
B. Clotting
C. Oxygen transport
D. Digestion
Answer: C
Rationale: RBCs contain hemoglobin to carry oxygen.
6. Which chamber pumps blood to the lungs?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Answer: D
Rationale: The right ventricle sends deoxygenated blood to
the lungs.
7. What is the functional unit of the kidney?
A. Neuron
B. Nephron
C. Alveolus
D. Villus
, Answer: B
Rationale: Nephrons filter blood and form urine.
8. Which organ stores bile?
A. Liver
B. Pancreas
C. Gallbladder
D. Stomach
Answer: C
Rationale: The gallbladder stores and concentrates bile.
9. Where does gas exchange occur?
A. Bronchi
B. Trachea
C. Alveoli
D. Diaphragm
Answer: C
Rationale: Alveoli are tiny sacs where oxygen and carbon
dioxide are exchanged.
10. What controls voluntary movement?
A. Brainstem
B. Cerebellum
C. Cerebrum
D. Spinal cord
Science Exam
Questions And Correct
Answers (Verified
Answers) Plus
Rationales 2025/2026
Q&A | Instant
Download Pdf
1. What is the basic unit of life?
A. Tissue
B. Organ
C. Cell
D. System
Answer: C
,Rationale: The cell is the smallest structure capable of
performing all life functions.
2. Which organelle is responsible for energy production?
A. Nucleus
B. Ribosome
C. Mitochondria
D. Golgi apparatus
Answer: C
Rationale: Mitochondria generate ATP through cellular
respiration.
3. What type of tissue covers body surfaces?
A. Connective
B. Muscle
C. Nervous
D. Epithelial
Answer: D
Rationale: Epithelial tissue forms protective coverings and
linings.
4. Which system regulates hormones?
A. Nervous
B. Endocrine
C. Circulatory
D. Respiratory
,Answer: B
Rationale: The endocrine system secretes hormones into the
bloodstream.
5. What is the main function of red blood cells?
A. Immunity
B. Clotting
C. Oxygen transport
D. Digestion
Answer: C
Rationale: RBCs contain hemoglobin to carry oxygen.
6. Which chamber pumps blood to the lungs?
A. Left atrium
B. Right atrium
C. Left ventricle
D. Right ventricle
Answer: D
Rationale: The right ventricle sends deoxygenated blood to
the lungs.
7. What is the functional unit of the kidney?
A. Neuron
B. Nephron
C. Alveolus
D. Villus
, Answer: B
Rationale: Nephrons filter blood and form urine.
8. Which organ stores bile?
A. Liver
B. Pancreas
C. Gallbladder
D. Stomach
Answer: C
Rationale: The gallbladder stores and concentrates bile.
9. Where does gas exchange occur?
A. Bronchi
B. Trachea
C. Alveoli
D. Diaphragm
Answer: C
Rationale: Alveoli are tiny sacs where oxygen and carbon
dioxide are exchanged.
10. What controls voluntary movement?
A. Brainstem
B. Cerebellum
C. Cerebrum
D. Spinal cord
