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Question

Oxygen in the blood is carried by ______


A
Haemoglobin
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B

White blood cells

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C

Plasma

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D

Platelets

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Solution

The correct option is A Haemoglobin

Oxygen is carried by a protein in the red blood cells called haemoglobin. This iron-containing protein can bind to four molecules of oxygen forming oxyhaemoglobin. These oxygen molecules are then carried to individual cells in the body where they are released.


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