Topics:
Animal Physiology, Animal Refresher
Oxygen Carrying Capacity of Hemoglobin
1 gram of hemoglobin carries how many ml of oxygen?
- 1.34 ml — Correct Answer
- 1.55 ml
- 20 ml
- 15 ml
Explanation:
Correct Answer: 1.34 ml
1 gram of hemoglobin (Hb) carries 1.34 ml of oxygen. This is known as the Hüfner's constant.
Calculation
- Normal Hb concentration in blood = 15 g/dl
- O₂ carried = 15 × 1.34 = ~20 ml O₂ per 100 ml of blood
- This 20 ml/dl is the normal oxygen-carrying capacity of blood.
Forms of Oxygen Transport in Blood
- 98.5% as Oxyhemoglobin (HbO₂)
- 1.5% dissolved in plasma
Hemoglobin Structure
- One Hb molecule = 4 subunits (2α + 2β chains) + 4 heme groups
- Each heme group contains 1 iron (Fe²⁺) atom
- Each Fe²⁺ can carry 1 molecule of O₂
- So 1 Hb molecule carries 4 molecules of O₂
📚 About this Topic — Animal Physiology
This multiple choice question is from Animal Physiology, Animal Refresher. It has 4 options with a detailed explanation of the correct answer. Practice more MCQs from Animal Physiology to strengthen your preparation.
