Barret esophagus is good example of__________?
Correct answer: C. Metaplasia
- A. Atrophy
- B. Dysplasia
- C. Metaplasia
- D. Hypertrophy
- E. Hyperplasia
Explanation
Barrett esophagus is metaplasia because the normal esophageal lining is replaced by a different, more specialized type of epithelium as an adaptation to chronic acid exposure. Dysplasia refers to abnormal disordered cell growth, not simply replacement by another mature tissue. Students often choose dysplasia because Barrett esophagus increases cancer risk, but the named change itself is metaplasia.
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About Classification of Organic Compounds
Organic compounds are classified by carbon skeleton into open-chain, branched-chain and cyclic compounds, including homocyclic and heterocyclic types. The classification also uses functional groups to distinguish hydrocarbons, halo compounds, alcohols, aldehydes, ketones, carboxylic acids and their derivatives, which is different from naming compounds by IUPAC rules.
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