TEAS 6 Science COMPLETE QUIZZES AND
SOLUTIONS 2026|INSTANT DOWNLOAD PDF
1. Which organ is primarily responsible for filtering blood?
A. Liver
B. Kidney
C. Spleen
D. Pancreas
*Correct answer: B – The kidneys filter waste, toxins, and excess
water from the blood.
2. What is the basic functional unit of the kidney?
A. Neuron
B. Alveolus
C. Nephron
D. Glomerulus
*Correct answer: C – The nephron performs filtration,
reabsorption, and secretion.
3. Which part of the brain controls balance and coordination?
A. Cerebrum
B. Medulla oblongata
C. Hypothalamus
D. Cerebellum
*Correct answer: D – The cerebellum regulates balance,
posture, and coordination.
4. Which blood cells are responsible for immunity?
A. Red blood cells
,B. Platelets
C. White blood cells
D. Plasma
*Correct answer: C – White blood cells defend the body against
infection.
5. What type of muscle is found in the heart?
A. Skeletal
B. Smooth
C. Cardiac
D. Voluntary
*Correct answer: C – Cardiac muscle is specialized for
continuous rhythmic contraction.
6. Which structure carries oxygenated blood from the lungs to
the heart?
A. Pulmonary artery
B. Aorta
C. Vena cava
D. Pulmonary vein
*Correct answer: D – Pulmonary veins return oxygen-rich blood
to the heart.
7. The main function of red blood cells is to:
A. Fight infection
B. Transport oxygen
C. Clot blood
D. Regulate temperature
, *Correct answer: B – Hemoglobin in RBCs binds and transports
oxygen.
8. Which hormone regulates blood glucose levels?
A. Thyroxine
B. Insulin
C. Estrogen
D. Cortisol
*Correct answer: B – Insulin lowers blood glucose by promoting
cellular uptake.
9. Which organ produces bile?
A. Gallbladder
B. Pancreas
C. Liver
D. Stomach
*Correct answer: C – The liver produces bile for fat digestion.
10. What part of the eye contains photoreceptors?
A. Lens
B. Retina
C. Cornea
D. Iris
*Correct answer: B – The retina contains rods and cones for
vision.
11. Which organ is responsible for detoxifying chemicals and
metabolizing drugs?
A. Kidney
B. Liver
SOLUTIONS 2026|INSTANT DOWNLOAD PDF
1. Which organ is primarily responsible for filtering blood?
A. Liver
B. Kidney
C. Spleen
D. Pancreas
*Correct answer: B – The kidneys filter waste, toxins, and excess
water from the blood.
2. What is the basic functional unit of the kidney?
A. Neuron
B. Alveolus
C. Nephron
D. Glomerulus
*Correct answer: C – The nephron performs filtration,
reabsorption, and secretion.
3. Which part of the brain controls balance and coordination?
A. Cerebrum
B. Medulla oblongata
C. Hypothalamus
D. Cerebellum
*Correct answer: D – The cerebellum regulates balance,
posture, and coordination.
4. Which blood cells are responsible for immunity?
A. Red blood cells
,B. Platelets
C. White blood cells
D. Plasma
*Correct answer: C – White blood cells defend the body against
infection.
5. What type of muscle is found in the heart?
A. Skeletal
B. Smooth
C. Cardiac
D. Voluntary
*Correct answer: C – Cardiac muscle is specialized for
continuous rhythmic contraction.
6. Which structure carries oxygenated blood from the lungs to
the heart?
A. Pulmonary artery
B. Aorta
C. Vena cava
D. Pulmonary vein
*Correct answer: D – Pulmonary veins return oxygen-rich blood
to the heart.
7. The main function of red blood cells is to:
A. Fight infection
B. Transport oxygen
C. Clot blood
D. Regulate temperature
, *Correct answer: B – Hemoglobin in RBCs binds and transports
oxygen.
8. Which hormone regulates blood glucose levels?
A. Thyroxine
B. Insulin
C. Estrogen
D. Cortisol
*Correct answer: B – Insulin lowers blood glucose by promoting
cellular uptake.
9. Which organ produces bile?
A. Gallbladder
B. Pancreas
C. Liver
D. Stomach
*Correct answer: C – The liver produces bile for fat digestion.
10. What part of the eye contains photoreceptors?
A. Lens
B. Retina
C. Cornea
D. Iris
*Correct answer: B – The retina contains rods and cones for
vision.
11. Which organ is responsible for detoxifying chemicals and
metabolizing drugs?
A. Kidney
B. Liver
