What makes RBCs look red in colour?

Haemoglobin

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Cyanoglobin

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Haemoglobin

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Pepsin

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Solution

The correct option is C
Haemoglobin

RBCs are red due to haemoglobin present in them. Haemoglobin is a protein combined with 'heme' which contains an iron molecule. The haemoglobin molecule perform the function of carrying oxygen to all parts of the body. Hemocyanin is a green pigment that contains 'copper' that transports oxygen in insects. Pepsin is an enzyme present in the stomach which helps in digestion.

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