Haemoglobin is a/an____________________?
Correct answer: C. Protein
- A. Amino acid
- B. Biological catalyst
- C. Protein
- D. Enzyme
Explanation
Haemoglobin is a conjugated protein containing iron, which enables it to bind and transport oxygen in blood. It is not generally classified as an enzyme or biological catalyst because it does not catalyse a metabolic reaction.
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