Heme, an iron atom attached to a porphyrin ring, serves as a prosthetic group in hemoglobin. Its primary roles are:
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Final Answer:
\[ \boxed{\text{Transport of oxygen}} \]
List I | List II | ||
|---|---|---|---|
| A | Unicellular glandular epithelium | I | Salivary glands |
| B | Compound epithelium | II | Pancreas |
| C | Multicellular glandular epithelium | III | Goblet cells of alimentary canal |
| D | Endocrine glandular epithelium | IV | Moist surface of buccal cavity |
Column I | Column II | ||
| A | Pituitary gland | I | Grave's disease |
| B | Thyroid gland | II | Diabetes mellitus |
| C | Adrenal gland | III | Diabetes insipidus |
| D | Pancreas | IV | Addison's disease |