Special kind of protein containing iron is called as _________ ?
Correct answer: B. Hemoglobin
- A. Hormones
- B. Hemoglobin
- C. Red blood cell
- D. White blood cell
Explanation
Hemoglobin is an iron-containing conjugated protein because its globin protein is combined with haem groups containing iron. Students may choose a red blood cell because red blood cells contain hemoglobin, but the question asks for the protein itself.
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About Conjugated Molecules
Conjugated molecules contain a non-protein component attached to a protein portion, giving the molecule properties that a simple protein lacks. The content includes glycoproteins, lipoproteins, phosphoproteins, nucleoproteins, chromoproteins and metalloproteins, with attention to their prosthetic groups and roles in transport, protection, catalysis and cellular structure.
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