– 2026/2027 Edition –
TEAS 7 Exam Practice
Study Questions and Answers for Prospective
Nursing Students
SCIENCE
Question 1
Which structure is responsible for filtering blood in the kidneys?
A. Ureter
B. Nephron
C. Bladder
D. Urethra
Answer: B. Nephron
Rationale: The nephron is the functional unit of the kidney responsible for filtering
blood, reabsorbing needed substances like glucose and water, and secreting waste
products to form urine. The ureter transports urine, the bladder stores urine, and the
urethra eliminates urine from the body.
Question 2
What is the primary function of red blood cells?
,A. Fight infection
B. Carry oxygen
C. Produce antibodies
D. Form clots
Answer: B. Carry oxygen
Rationale: Red blood cells contain hemoglobin, a protein that binds oxygen in the lungs
and delivers it to tissues throughout the body. White blood cells fight infection, platelets
help with clotting, and antibodies are produced by immune cells.
Question 3
Which part of the brain controls involuntary functions such as breathing and heart rate?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hippocampus
Answer: C. Medulla oblongata
Rationale: The medulla oblongata regulates vital involuntary functions including
respiration, heart rate, and blood pressure. The cerebrum controls thinking and
voluntary movement, while the cerebellum manages coordination and balance.
Question 4
What is the function of the alveoli in the lungs?
,A. Filter air
B. Exchange gases
C. Produce mucus
D. Move air into bronchi
Answer: B. Exchange gases
Rationale: Alveoli are tiny air sacs where oxygen diffuses into the blood and carbon
dioxide diffuses out. Their thin walls and large surface area make gas exchange efficient.
Question 5
Which hormone lowers blood glucose levels?
A. Glucagon
B. Insulin
C. Cortisol
D. Adrenaline
Answer: B. Insulin
Rationale: Insulin, produced by the pancreas, helps cells absorb glucose from the
bloodstream and store it as glycogen, thereby lowering blood sugar levels.
Question 6
Which organ produces bile?
, A. Gallbladder
B. Liver
C. Pancreas
D. Stomach
Answer: B. Liver
Rationale: The liver produces bile, which helps break down fats during digestion. The
gallbladder stores bile but does not produce it.
Question 7
What is the function of white blood cells?
A. Carry oxygen
B. Fight infection
C. Transport nutrients
D. Produce energy
Answer: B. Fight infection
Rationale: White blood cells are part of the immune system and protect the body by
identifying and destroying pathogens such as bacteria and viruses.
Question 8
Which structure prevents food from entering the trachea during swallowing?
TEAS 7 Exam Practice
Study Questions and Answers for Prospective
Nursing Students
SCIENCE
Question 1
Which structure is responsible for filtering blood in the kidneys?
A. Ureter
B. Nephron
C. Bladder
D. Urethra
Answer: B. Nephron
Rationale: The nephron is the functional unit of the kidney responsible for filtering
blood, reabsorbing needed substances like glucose and water, and secreting waste
products to form urine. The ureter transports urine, the bladder stores urine, and the
urethra eliminates urine from the body.
Question 2
What is the primary function of red blood cells?
,A. Fight infection
B. Carry oxygen
C. Produce antibodies
D. Form clots
Answer: B. Carry oxygen
Rationale: Red blood cells contain hemoglobin, a protein that binds oxygen in the lungs
and delivers it to tissues throughout the body. White blood cells fight infection, platelets
help with clotting, and antibodies are produced by immune cells.
Question 3
Which part of the brain controls involuntary functions such as breathing and heart rate?
A. Cerebrum
B. Cerebellum
C. Medulla oblongata
D. Hippocampus
Answer: C. Medulla oblongata
Rationale: The medulla oblongata regulates vital involuntary functions including
respiration, heart rate, and blood pressure. The cerebrum controls thinking and
voluntary movement, while the cerebellum manages coordination and balance.
Question 4
What is the function of the alveoli in the lungs?
,A. Filter air
B. Exchange gases
C. Produce mucus
D. Move air into bronchi
Answer: B. Exchange gases
Rationale: Alveoli are tiny air sacs where oxygen diffuses into the blood and carbon
dioxide diffuses out. Their thin walls and large surface area make gas exchange efficient.
Question 5
Which hormone lowers blood glucose levels?
A. Glucagon
B. Insulin
C. Cortisol
D. Adrenaline
Answer: B. Insulin
Rationale: Insulin, produced by the pancreas, helps cells absorb glucose from the
bloodstream and store it as glycogen, thereby lowering blood sugar levels.
Question 6
Which organ produces bile?
, A. Gallbladder
B. Liver
C. Pancreas
D. Stomach
Answer: B. Liver
Rationale: The liver produces bile, which helps break down fats during digestion. The
gallbladder stores bile but does not produce it.
Question 7
What is the function of white blood cells?
A. Carry oxygen
B. Fight infection
C. Transport nutrients
D. Produce energy
Answer: B. Fight infection
Rationale: White blood cells are part of the immune system and protect the body by
identifying and destroying pathogens such as bacteria and viruses.
Question 8
Which structure prevents food from entering the trachea during swallowing?
