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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases1 Mark
MCQ
Characteristic feature of haemoglobin:
  • A
    Reversible union with oxygen
  • B
    Red colour
  • C
    Presence of Cu
  • D
    Presence of globulin protein
✓

Answer

  1. Reversible union with oxygen

Explanation:

Haemoglobin is a protein which is used in red blood cells to store and transport oxygen. The reversible nature of the binding of oxygen allows for both the uptake of oxygen in the lungs and its release in body tissues.

Haemoglobin does not contain any Cu, it contains Fe.

The globulins are a family of globular proteins that have higher molecular weights than albumins and are insoluble in pure water but dissolve in dilute salt solutions. They are not present in haemoglobin.

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