MCQ Quiz on Blood Part 2

Blood is a vital connective tissue that transports oxygen, nutrients, hormones, and waste products throughout the body. An average adult has about 5 liters of blood, consisting of plasma, red blood cells (RBCs), white blood cells (WBCs), and platelets. Plasma carries nutrients and hormones, RBCs transport oxygen using hemoglobin, WBCs protect the body from infections, and platelets help in blood clotting. Blood also regulates body temperature and maintains the body's internal balance. Human blood is classified into four major groups: A, B, AB, and O, each of which may be Rh-positive or Rh-negative. Blood cells are produced in the bone marrow, and red blood cells have an average lifespan of 120 days. A balanced diet rich in iron, vitamin B12, and folic acid helps maintain healthy blood. Blood donation is a life-saving act that benefits many patients in emergencies.

Total Question: 10
Views: 1 times
Attempted: 0 times
Published by : on 25-Jul-2026 09:08 am

Attempt Leaderboard

MCQ Questions on MCQ Quiz on Blood Part 2

Q. Which mineral is essential for the formation of hemoglobin?

A. Calcium

B. Iron

C. Sodium

D. Potassium

Correct: Option (B)

Explanation: Iron is a vital component of hemoglobin, enabling it to bind oxygen.

Q. Which blood component transports nutrients, hormones, and waste products?

A. Platelets

B. Red Blood Cells

C. Plasma

D. White Blood Cells

Correct: Option (C)

Explanation: Plasma carries nutrients, hormones, proteins, and waste products throughout the body.

Q. Which type of white blood cell produces antibodies?

A. Neutrophils

B. Lymphocytes

C. Monocytes

D. Basophils

Correct: Option (B)

Explanation: B-lymphocytes produce antibodies that help fight infections.

Q. The normal pH of human blood is approximately:

A. 5.5

B. 6.5

C. 7.4

D. 8.5

Correct: Option (C)

Explanation: Normal blood pH ranges from 7.35 to 7.45, with 7.4 being the average.

Q. Which blood vessel carries oxygenated blood from the lungs to the heart?

A. Pulmonary Artery

B. Aorta

C. Pulmonary Vein

D. Superior Vena Cava

Correct: Option (C)

Explanation: The pulmonary veins carry oxygen-rich blood from the lungs to the left atrium of the heart.

Q. Which blood disorder is caused by a deficiency of hemoglobin?

A. Hemophilia

B. Leukemia

C. Anemia

D. Thalassemia

Correct: Option (C)

Explanation: Anemia is characterized by a low hemoglobin level or a reduced number of red blood cells.

Q. Which blood group has both A and B antigens on red blood cells?

A. A

B. B

C. AB

D. O

Correct: Option (C)

Explanation: Blood group AB has both A and B antigens on the surface of red blood cells.

Q. Which gas is transported from body tissues to the lungs by blood?

A. Oxygen

B. Nitrogen

C. Carbon Dioxide

D. Hydrogen

Correct: Option (C)

Explanation: Carbon dioxide produced by cells is carried by blood to the lungs for exhalation.

Q. What is the normal color of oxygen-rich blood?

A. Bright Red

B. Blue

C. Dark Green

D. Yellow

Correct: Option (A)

Explanation: Oxygenated blood is bright red due to the oxygen bound to hemoglobin.

Q. Which blood component is highest in number under normal conditions?

A. Platelets

B. White Blood Cells

C. Red Blood Cells

D. Plasma Proteins

Correct: Option (C)

Explanation: Red blood cells are the most abundant cellular component of blood, numbering about 4.5–6 million per microliter.

Attempt this quiz