Selected MCQ

Current Question
Which blood cells carry oxygen?
  • A. WBC
  • B. RBC
  • C. Platelets
  • D. Plasma
Correct Answer: B
Explanation:
Red blood cells transport oxygen.
Related Question 1
Which blood vessel carries oxygenated blood?
  • A. Vein
  • B. Artery
  • C. Capillary
  • D. Venule
Correct Answer: B
Explanation:
Arteries carry oxygen-rich blood (except pulmonary).
Related Question 2
Which structure carries oxygen in blood?
  • A. Plasma
  • B. Hemoglobin
  • C. Platelets
  • D. Antibodies
Correct Answer: B
Explanation:
Hemoglobin binds oxygen.
Related Question 3
Which blood cells fight infection?
  • A. RBC
  • B. Platelets
  • C. WBC
  • D. Plasma
Correct Answer: C
Explanation:
White blood cells defend body.
Related Question 4
Which vitamin aids blood clotting?
  • A. A
  • B. B
  • C. K
  • D. D
Correct Answer: C
Explanation:
Vitamin K helps clotting.
Related Question 5
Which blood protein transports iron?
  • A. Hemoglobin
  • B. Albumin
  • C. Transferrin
  • D. Fibrin
Correct Answer: C
Explanation:
Transferrin carries iron.